AMY J. WILLIAMS

Department of Geological Sciences                                                               Email: amywilliams1@ufl.edu

University of Florida                                                                                        Phone: 410-704-2744 (office)

Gainesville, FL 32611                                                                                     people.clas.ufl.edu/amywilliams1/

Education

PhD in Geology – University of California, Davis – September 2014, Advisor: Dr. Dawn Y. Sumner

MSc in Earth and Planetary Sciences – University of New Mexico – August 2009, Advisor: Dr. Laura J. Crossey

B.S., Earth & Environmental Science – Furman University – June 2007, Advisor: Dr. C. Brannon Andersen

Professional Experience

Assistant Professor, Department of Geological Sciences, University of Florida, 2018-present.

Assistant Professor, Department of Physics, Astronomy, and Geosciences, Towson University, 2015-2018.

Participating Scientist, NASA Mars Perseverance rover, 2021-present

Collaborator, Sample Analysis at Mars (SAM) Instrument team, NASA Mars Science Laboratory (Curiosity) rover, NASA Goddard Space Flight Center, 2015 – 2022.

Mars Sedimentology and Stratigraphy, NASA Curiosity rover science team member, 2009 – present; NASA Perseverance rover science team member, 2021-present.

Science Team Member, Miniaturized Variable Pressure Scanning Electron Microscope (MVP-SEM), NASA Marshall Space Flight Center, 2017-present.

Postdoctoral Research Associate, NASA Goddard Space Flight Center, 2014 – 2015.

Proposals, Grants, & Fellowships

Total Funding Obtained (2011-present) $2,102,002

NASA Mars Science Laboratory Rover Participating Scientist Program, “Delineating the Sources of Martian Organic Molecules”. PI – AJ Williams – 2022-2025, Total budget $333,511.

Florida Space Institute Space Research Initiative, “Ad Astra per Lutum: Leveraging Planetary Analogs to Develop New Technologies in Martian Organic Molecule Detection”. PI – AJ Williams – 2022-2023, Total budget $98,467.

Florida Space Grant Consortium – Florida Space Research Program, “Biosignatures in Iron Oxidizing Microbes {BIOMe} – A Study on Metabolic Processes Preserved as Biosignatures from Iron-Metabolizing Organisms”. PI – AJ Williams – 2021-2022, Total budget $24,979.

NASA Mars 2020 Rover Participating Scientist Program, “Seeking Organic and Textural Signs of Ancient Life in Jezero Crater with the Mars 2020 Rover Payload”. PI – AJ Williams – 2020-2024, Total budget $304,311.

NSF IUSE: GEOPAths Program, “GP-GO: GeoScientists Promoting Accessible Collaborative Education (GEOSPACE)”. Co-PI – AJ Williams – 2020-2022, Total budget $391,538.

Florida Space Institute Space Research Initiative, “TMSH Thermochemolysis: The Next Generation in Extraterrestrial Organic Molecule Detection”. PI – AJ Williams – 2019-2020, Total budget $68,702

NASA Exobiology Program, “Discovering biosignatures in manganese deposits on Mars with rover payload Instruments”. Co-I – AJ Williams – 2018-2019, Total budget $200,000.

Towson University Faculty Development and Research Committee (FDRC) Award, “Molecular Structure of a Metabolic Biosignature”. PI – AJ Williams – 2017-2018, Total Budget $5,592

Fisher College of Science and Mathematics General Endowment Funds, “Developing interdisciplinary authentic research experiences in urban environments with geoscience and environmental science courses”. PI – AJ Williams 2017-2018, Total budget $20,000

Fisher College of Science and Mathematics General Endowment Funds, “Building a collaborative culture and developing resources for interdisciplinary environmental and earth science research in urban environments”. PI- AJ Williams 2016-2017, Total budget $25,857

National Science Foundation Major Research Instrumentation Award, “MRI: Acquisition of a Field Emission Scanning Electron Microscope with STEM and EDS Capabilities for Interdisciplinary Research and Education at Towson University”. Co-I AJ Williams 2016-2019, Total budget $530,545

NASA Earth and Space Sciences Fellowship, “Geobiology of Acid-Saline Systems: Implications for Early Martian Habitats” 2011-2014, Total budget $90,000

Durrell Funds Award, UC Davis Earth & Planetary Sciences, 2010-2013

Sevilleta Long Term Ecological Research program Graduate Student Fellowship (Twice), 2008-2009, Total budget $6,000

New Mexico Geological Society Grants-in-Aid Award, 2008-2009

Graduate and Professional Student Association Student Research Allocations Committee Award, and Office of Graduate Studies Research, Project and Travel Grant Award, University of New Mexico, both in 2009

New Mexico Water Resources Research Institute Graduate Student Fellowship, 2008, Total budget $5,000

Advisee Awards & Funding

2022   Alexa Goldberg UF University Scholars Award $2,250 2021   Phylindia Gant Board of Education Summer Fellowship Program $1,000 Eli Prescott UF University Scholars Award $2,250 Janelle Roach UF University Scholars Online Award $2,250 2020 Lauren Judge Florida Space Grant Consortium Masters Fellowship $8,992 Chance Sturrup UF College of Liberal Arts and Sciences Scholars Award $3,000 2017 JoAnna Marlow TU Fisher College Undergraduate Research Grant $117 Chris Cook TU Fisher College Undergraduate Research Grant $500 2016 Jeremy Becraft TU Fisher College Undergraduate Research Grant $360 Ryan Grams TU Office of Undergraduate Research Award $180 Shane Evans TU Office of Undergraduate Research Award $180 Derek Seibel TU Fisher College Undergraduate Research Grant $500 2015 Tim Bredder TU Fisher College Undergraduate Research Grant $126 TU Office of Undergraduate Research Award $250 Awards & Honors

• UF Provost’s Excellence Award for Assistant Professors, 2021-2022
• UF College of Liberal Arts and Sciences Faculty Advisor/ Mentor of the Year Award Nomination, 2021-2022
• UF Research Promotion Initiative Award, 2021
• Maryland Academy of Sciences Outstanding Young Scientist Award Nomination, 2017
• Best Oral Presentation Award, Interdisciplinary Graduate and Professional Student Symposium Dean’s Prize, Division of Mathematical and Physical Sciences, UC Davis, 2012
• Astrobiology Science Conference Travel Award, 2012
• Graduate Student Association Travel Award, UC Davis, 2011
• Lunar & Planetary Institute Career Development Award, 2011
• First International Conference on Mars Sedimentology and Stratigraphy Travel Award, 2010
• Wanek Graduate Scholarship Award, UNM, 2009
• Graduate and Professional Student Association Scholar Award, UNM, 2009
• New Mexico Geological Society Best Student Poster Award, 2009
• Earth & Planetary Sciences Outstanding TA Award, UNM, 2009
• Susan Deese-Roberts Teaching Assistant of the Year Award Nomination, UNM, 2009
• American Geophysical Union, Hydrology Section Outstanding Student Paper Award, 2009
• Earth & Planetary Sciences Geology Alumni Scholarship Award, UNM, 2008
• Earth & Environmental Sciences Research Award, Furman University, 2007

Publications

Journal Articles               Link to Google Scholar    Link to Thomson-Reuters ResearcherID

Submitted and In Review

Simon, J., K. Hickman-Lewis, B. A. Cohen, V. Debaille, E. M. Hausrath, D.L. Shuster, L.E. Mayhew, B.P. Weiss, T. Bosak, M.-P. Zorzano, H. E. F. Amundsen, L.W. Beegle, J.F. Bell III, K. C. Benison, Eve L. Berger, O. Beyssac, A.J. Brown, F. Calef, T. M. Casademont, B. Clark, E. Clavé, L. Crumpler, A. D. Czaja, A. G. Fairén, K. A. Farley, D. T. Flanery, T. Fornaro, O. Forni, F. Gomez, Y. Goreva, A. Gorin, K. P. Hand, J. Henneke, C. D. K. Herd, B. H. N. Horgan, J. R. Johnson, J. Joseph, R. E. Kronyak, J. M. Madariage, J. N. Maki, L. Mandon, F. M. McCubbin, S. M. McLennan, R. C. Moeller, C. E. Newman, J. I. Núñez, A. C. Pascuzzo, D. A. Pedersen, G. Poggiali, P. Pinet, C. Quantin-Nataf, M. Rice, J. W. Rice Jr., C. Royer, M. Schmidt, M. Sephton, S. Sharma, S. Siljeström, K. M. Stack, A. Steele, V. Z. Sun, A. Udry, S. VanBommel, M. Wadhwa, R. C. Wiens, A. J. Williams, K. H. Williford, 2022. Samples Collected from the Floor of Jezero Crater with the Mars 2020 Perseverance Rover, submitted to Journal of Geophysical Research – Planets.

Sharma, S., R. Roppel, A. Murphy, L. Beegle, R. Bhartia, A. Steele, J. Hollis, S. Siljeström, F. McCubbin, S. Asher, W. Abbey, A. Allwood, E. Berger, B. Bleefeld, A. Burton, S. Bykov, E. Cardarelli, P. Conrad, A. Corpolongo, A. Czaja, L. DeFlores, K. Edgett, K. Farley, T. Fornaro, A. Fox, M. Fries, D. Harker, K. Hickman-Lewis, J. Huggett, S. Imbeah, R. Jakubek, L. Kah, C. Lee, Y. Liu, A. Magee, M. Minitti, K. Moore, A. Pascuzzo, C. Rodriquez, E. Scheller, S. Shkolyar, K. Stack, M. Tuite, K. Uckert, A. Werynski, R. Wiens, A.J. Williams, K. Winchell, M. Wu, A. Yanchilina, K. Steadman, 2022. Mapping organic-mineral associations in Jezero crater: Implications for Martian Organic Geochemistry, submitted to Nature.

Weng, M.M., E. Zaikova, M. Millan, A.J. Williams, A.C. McAdam, C.A. Knudson, S.R. Fuqua, N.Y. Wagner, K. Craft, S. Kobs Nawotniak, A. Shields, J. Bevilacqua, Y. Bai, S.S. Hughes, W.B. Garry, J.L. Heldmann, D. S. S. Lim, D. Buckner*, P. Gant*, S.S. Johnson,  2022. Life Underground: Investigating Microbial Communities and their Biomarkers in Mars-1 analog Lava Tubes at Craters of the Moon National Monument and Preserve, in review with Journal of Geophysical Research – Planets.

Scheller, E., and 65 coauthors, including A.J. Williams, 2022. Aqueous alteration processes and implications for organic geochemistry in Jezero crater, Mars, in review with Science.

He, Y., Buch, A., Szopa, C., Williams, A.J., Freissinet, C., Guzman, M., Millan, M., Coscia, D., Bonnet, J.-Y., Cabane, M., 2022. The application of TMAH thermochemolysis on the detection of nucleosides: application for the SAM and MOMA instruments, in review with Journal of Analytical and Applied Pyrolysis.

Freissinet, C., D.P. Glavin, P.D. Archer Jr., S. Teinturier, A. Buch, C. Szopa, J.M.T. Lewis, A.J. Williams, R. Navarro-Gonzalez, J.P. Dworkin, H.B. Franz, M. Millan, J.L. Eigenbrode, R.E. Summons, C.H. House, R.H. Williams, A. Steele, O. McIntosh, F. Gómez, B. Prats, C.A. Malespin, P.R. Mahaffy, 2022. Long-chain alkanes preserved in a martian mudstone, in review at Nature Astronomy.

Millan, M., A. J. Williams, A. McAdam, J. L. Eigenbrode, C. Freissinet, D. P. Glavin, C. Szopa, C. Pozarycki, A. Buch, R. H. Williams, D. P. Archer, B. Sutter, J. M. T. Lewis, G. M. Wong, H. Franz, J. Stern, R. Navarro-Gonzalez, C. H. House, V. Fox, A. B. Bryk, K. Bennett, A. Steele, S. Teinturier, C. Malespin, S. S. Johnson, P. R. Mahaffy, 2022. Characterization of Organic Molecules in the Glen Torridon Region of Gale Crater, Mars, by the SAM Instrument Suite on board the Curiosity Rover, in review with Journal of Geophysical Research: Planets, special issue on Glen Torridon.

Navarro-González, R., K.F. Navarro, J. Urrutia-Fucugauchi, C. McKay, L. Pérez-Cruz, P. Coll, J. Eigenbrode, C.A. Malespin, P.R. Mahaffy, F.J. Martín‐Torres, M.‐P. Zorzano‐Mier, B. Prats, A. Vasavada, P.D. Archer Jr., A. Buch, M. Cabane, D. Coscia, H.B. Franz, C. Freissinet, D.P. Glavin, A.C. McAdam, D.W. Ming, M. Millan, F. Raulin, J. Rodríguez-Manfredi, A. Steele, J.C. Stern, R.E. Summons, B. Sutter, C. Szopa, A.J. Williams, 2022. Surface temperature trends recorded in thiophene from two impact craters: Chicxulub and Gale, in review at Advances in Astronomy.

Williams, A.J., J. Moore, J. Becraft, D. Capparuccini, S. Dobbis, R. Grams, K. Leonzo, T. Pearson, M. Rogers, T. Van Ness, N. Werps, 2022. Dilution and Drainage Basin Controls on Urban Stream Syndrome Along an Urban to Rural Gradient, in review at Applied Geochemistry.

Bennett, K.A., V.K. Fox, A. Bryk, W. Dietrich, C. Fedo, L. Edgar, M.T. Thorpe, A.J. Williams, G.M. Wong, E. Dehouck, A. McAdam, B. Sutter, M. Millan, S.G. Banham, C.C. Bedford, T. Bristow, A. Fraeman, A.R. Vasavada, J. Grotzinger, L. Thompson, C. O’Connell-Cooper, P. Gasda, A. Rudolph, R. Sullivan, R. Arvidson, A. Cousin, B. Horgan, K.M. Stack, A. Treiman, J. Eigenbrode, G. Caravaca, 2022.  The Curiosity Rover’s Exploration of Glen Torridon, Gale crater, Mars: An Overview of the Campaign and Scientific Results, Journal of Geophysical Research: Planets, special issue on Glen Torridon, accepted.  Link to Article

McAdam, A., B. Sutter, P. D. Archer, H. B. Franz, G. M. Wong, J. M. T. Lewis, J. V. Clark, M. Millan, A. J. Williams, J. L. Eigenbrode, C. A. Knudson, C. Freissinet, D. P. Glavin, J. C. Stern, R. Navarro-González, C. N. Achilles, D. W. Ming, R. V. Morris, T. F. Bristow, E. B. Rampe, M. T. Thorpe, C. H. House, S. Andrejkovičová, A. B. Bryk, V. K. Fox,  K. A. Bennett, S. S. Johnson, P. R. Mahaffy, C. A. Malespin, 2022. Evolved gas analyses of sedimentary rocks from the Glen Torridon Clay-Bearing Unit, Gale crater, Mars: Results from the Mars Science Laboratory Sample Analysis at Mars Instrument Suite, Journal of Geophysical Research: Planets, special issue on Glen Torridon, accepted.  Link to Article

Farley, K.A., Stack, K M, Shuster, D L, Horgan, B H N, Hurowitz, J A, Tarnas, J D, Simon, J I, Sun, V Z, Scheller, E L, Moore, K R, McLennan, S M, Vasconcelos, P M, Wiens, R C, Treiman, A H, Mayhew, L E, Beyssac, O, Kizovski, T V, Tosca, N J, Williford, K H, Crumpler, L S, Beegle, L W, Bell, J F, Ehlmann, B L, Liu, Y, Maki, J N, Schmidt, M E, Allwood, A C, Amundsen, H E F, Bhartia, R, Bosak, T, Brown, A J, Clark, B C, Cousin, A, Forni, O, Gabriel, T S J, Goreva, Y, Gupta, S, Hamran, S.-E., Herd, C D K, Hickman-Lewis, K, Johnson, J R, Kah, L C, Kelemen, P B, Kinch, K B, Mandon, L, Mangold, N, Quantin-Nataf, C, Rice, M S, Russell, P S, Sharma, S, Siljeström, S, Steele, A, Sullivan, R, Wadhwa, M, Weiss, B P, Williams, A J, Wogsland, B V, Willis, P A, Acosta-Maeda, T A, Beck, P, Benzerara, K, Bernard, S, Burton, A S, Cardarelli, E L, Chide, B, Clavé, E, Cloutis, E A, Cohen, B A, Czaja, A D, Debaille, V, Dehouck, E, Fairén, A G, Flannery, D T, Fleron, S Z, Fouchet, T, Frydenvang, J, Garczynski, B J, Gibbons, E F, Hausrath, E M, Hayes, A G, Henneke, J, Jørgensen, J L, Kelly, E M, Lasue, J, Le Mouélic, S, Madariaga, J M, Maurice, S, Merusi, M, Meslin, P.-Y., Milkovich, S M, Million, C C, Moeller, R C, Núñez, J I, Ollila, A M, Paar, G, Paige, D A, Pedersen, D A K, Pilleri, P, Pilorget, C, Pinet, P C, Rice, J W, Royer, C, Sautter, V, Schulte, M, Sephton, M A, Sharma, S K, Sholes, S F, Spanovich, N, St. Clair, M, Tate, C D, Uckert, K, VanBommel, S J, Yanchilina, A G, Zorzano, M.-P., 2022. Aqueously altered igneous rocks on the floor of Jezero crater, Mars, Science, accepted.  Link to Article

Williams, A.J., Muirhead, B., Matousek, S., Price, H., Barba, N., Miller, R., Murphy, J., Woolley, R., Backes, P., Okamoto, T., Woo, J., Edwards, C., Freeman, T., Garner, G., Warwick, R., Zacny, K., Brinckerhoff, W., Ehlmann, B., Newman, C., Jakosky, B., Hamilton, V., Hoffman, A., Lin, Y. 2021, Mars Life Explorer, Mission Concept Study, Planetary Science and Astrobiology Decadal Survey, Jet Propulsion Laboratory, Pasadena, California. Study report available here.

2021

Millan, M. Teinturier, S. Malespin, C., Bonnet, J.-Y., Buch, A., Dworkin, J., Eigenbrode, J., Freissinet, C., Glavin, D., Navarro-Gonzalez, R., Srivastava, A., Stern, J., Sutter, B., Szopa, C., Williams, A.J., Williams, R., Wong, G., Mahaffy, P., Johnson, S., 2021. Organic Molecules Revealed in Mars’ Bagnold Dunes by Curiosity’s Derivatization Experiment, Nature Astronomy, DOI 10.1038/s41550-021-01507-9.  Link to Article

Mangold, N., S. Gupta, O. Gasnault, G. Dromart, J.D. Tarnas, S.F. Sholes, B. Horgan, C. Quantin-Nataf, A.J. Brown, S. Le Mouélic, R.A. Yingst, J.F. Bell, O. Beyssac, T. Bosak, F. Calef III,  B. Ehlmann,  K.A. Farley, J.P. Grotzinger, K. Hickman-Lewis, S. Holm-Alwmark, L.C. Kah, J. Martinez-Frias, S. McLennan, S. Maurice, J. Nunez, A.M. Ollila, P. Pilleri, J. W. Rice, M. Rice, J. I. Simon, D. L. Shuster, K. M. Stack, V. Z. Sun, A. H. Treiman, B.P. Weiss, R.C. Wiens, A.J. Williams, N.R. Williams, K.H. Williford, and the M2020 team, 2021. Evidence for a delta-lake system and ancient flood deposits at Jezero crater, Mars, from the Perseverance rover, Science, 10.1126/science.abl4051.  Link to Article

He, Y., Buch, A., Szopa, C., Millan, M., Freissinet, C., Navarro-Gonzalez, R., Johnson, S.S., Glavin, D., Williams, A.J., Eigenbrode, J., Teinturier, S., Malespin, C., Guzman, M., Coscia, D., Bonnet, J.-Y., Lu, P., Cabane, M., Mahaffy, P., 2021. Influence of calcium perchlorate on the search for Martian organic compounds with MTBSTFA/DMF derivatization, Astrobiology, doi.org/10.1089/ast.2020.2393.  Link to Article

Bennett, K.A., Rivera-Hernandez, F., Tinker, C., Horgan, B., Fey, D.M. Edwards, C., Edgar, L.A., Kronyak, R., Edgett, K.S., Fraeman, A., Kah, L.C., Henderson, M., Stein, N., Dehouck, E., Williams, A.J., 2021. Extensive diagenesis revealed by fine-scale features at Vera Rubin ridge, Gale crater, Mars, Journal of Geophysical Research, Planets, special issue on Vera Rubin ridge, 126, e2019JE006311. https://doi.org/10.1029/2019JE006311.  Link to Article

Williams, A.J., Craft, K.L., Millan, M., Johnson, S.S., Knudson, C.A., Juarez Rivera, M., McAdam, A.C., Tobler, D., Skok, J.R., 2021. Fatty Acid Preservation in Active, Inactive, and Relict Siliceous Sinter Hot Spring Deposits in Iceland, with Implications for Organics Detection on Mars, Astrobiology Hot Spring Special Issue, 21(1), 60-82, 10.1089/ast.2019.2115.  Link to Article

He, Y., A. Buch, C. Szopa, A.J. Williams, M. Millan, C. Malespin, D. Glavin, C. Freissinet, J. Eigenbrode, S. Teinturier, D. Coscia, J.Y. Bonnet, J. Stern, F. Stalport, M. Guzman, N. Chaouche, P. Lu, R. Navarro-Gonzalez, S. Johnson, M. Cabane, P. Mahaffy, 2021. Influence of perchlorate on the search for organics on Mars with TMAH thermochemolysis, Astrobiology, 21 (3), 279-297, doi.org/10.1089/ast.2020.2252.  Link to Article

2020

Fraeman, A., J. G. Catalano, L. Edgar, C. Fedo, E. Rampe, R.V. Morris, A. R. Vasavada, V. Z. Sun, R. E. Arvidson, A. Bryk, S. Banham, K. Bennett, J.C. Bridges, W. Dietrich, C.E. Edwards, W.W. Fischer, V. Fox, J. Frydenvang, C. Hardgrove, J.P. Grotzinger,  S. Gupta, B. Horgan, C. House, S. Johnson, S. Jacob, J. Johnson, J. L’Haridon, N. Mangold, D. Rubin, M. Salvatore, S.P. Schwenzer, K. Siebach, N.T. Stein, K.M. Stack, L. Thompson, D. Wellington, A.J. Williams, S. Turner, 2020. The Origin of Vera Rubin Ridge: Overview and Results from Curiosity’s Exploration Campaign, Journal of Geophysical Research, Planets, special issue on Vera Rubin ridge, doi.org/10.1029/2020JE006527.  Link to Article

McAdam, A.C., Sutter, B., Archer, P.D., Franz, H.B., Wong, G.M., Lewis, J.M.T., Eigenbrode, J.L., Stern, J.C., Knudson, C.A., Clark, J.V., Andrejkovičová, S., Ming, D.W., Morris, R.V., Achilles, C.N., Rampe, E.B., Bristow, T.F., Navarro-González, R., Mahaffy, P.R., Thompson, L.M., Gellert, R., Williams, A.J., House, C.H., Johnson, S.S., 2020. Constraints on the Mineralogy and Geochemistry of the Vera Rubin ridge, Gale crater, Mars, from Mars Science Laboratory Sample Analysis at Mars Evolved Gas Analyses, Journal of Geophysical Research, Planets, special issue on Vera Rubin ridge, 125: https://doi.org/10.1029/2019JE006309.  Link to Article

He, Y., Buch, A., Szopa, C., Williams, A.J., Milan, M., Freissinet, C., Malespin, C., Glavin, D.P., Eigenbrode, J.L., Coscia, D., Teinturier, S., Lu, P., Cabane, M., Mahaffy, P.R., 2020. The Search for organic compounds with TMAH thermochemolysis: from the Earth to space experiment exploration, Trends in Analytical Chemistry, 127, doi 10.1016/j.trac.2020.115896.  Link to Article

Carrier, B.L., D. W. Beaty, M. A. Meyer, J. G. Blank, L. Chou, S. DasSarma, D. J. Des Marais, J. L. Eigenbrode, N. Grefenstette, N. L. Lanza, A. C. Schuerger, P. Schwendner, H. D. Smith, C. R. Stoker, J. D. Tarnas, K. D. Webster, C. Bakermans, B. K. Baxter, M. S. Bell, S. A. Benner, H. H. Bolivar Torres, P. J. Boston, R. Bruner, B. C. Clark, P. DasSarma, A. E. Engelhart, Z. E. Gallegos, Z. K. Garvin, P. J. Gasda, J. H. Green, R. L. Harris, M. E. Hoffman, T. Kieft, A. H. D. Koeppel, P. A. Lee, X. Li, K. L. Lynch, R. Mackelprang, P. R. Mahaffy, L. H. Matthies, M. A. Nellessen, H. E. Newsom, D. E. Northup, B. R. W. O’Connor, S. M. Perl, R. C. Quinn, L. A. Rowe, B. Sauterey, M. A. Schneegurt, D. Schulze-Makuch, L. A. Scuderi, M. N. Spilde, V. Stamenković, J. A. Torres Celis, D. Viola, B. D. Wade, C. J. Walker, R. C. Wiens, A. J. Williams, J. M. Williams, J. Xu, 2020. Mars Extant Life: What’s Next? Conference Report, Astrobiology, 20 (6), 785-814.  Link to Article

Johnson, S.S., Millan, M., Graham, H., Benison, K.C., Williams, A.J., McAdam, A., Knudson, C.S., Andrejkovicova, S., Achilles, C., 2020. Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars, Astrobiology, 20 (2), 167-178.  Link to Article

2019

Hood, D.R., Karunatillake, S., Gasnault, O., Williams, A.J., Dutrow, B., Ojha, L., Kobs, S., Kim, K., Heldmann, J., Fralick, C., 2019. Contrasting Regional Soil Hydration Processes across the Topographic Dichotomy of Mars, Geophysical Research Letters, 46, 13,668–13,677. https://doi.org/10.1029/2019GL084483.  Link to Article

He, Y., Buch, A., Morisson, M., Szopa, C., Freissinet, C., Williams, A. J., Millan, M., Guzman, M., Navarro-González, R., Bonnet, J. Y., Coscia, D., Eigenbrode, J.L., Malespin, C.A., Mahaffy, P.R., Glavin, D.P., Dworkin, J.P., Lu, P., Johnson, S.S., 2019. Application of TMAH thermochemolysis to the detection of nucleobases: application to the MOMA and SAM space experiment, Talanta, 204, 802-811.  Link to Article

Williams, A.J., Eigenbrode, J., Floyd, M., Wilhelm, M.B., O’Reilly, S., Johnson, S.S., Craft, K., Knudson, C.A., Andrejkovičová, S., Lewis, J.M.T., Buch, A., Glavin, D.P., Freissinet, C., Summons, R., McAdam, A., Benison, K., Navarro-González, R., Malespin, C., Mahaffy, P.R., 2019. Optimization of the Recovery of Fatty Acids from Mars Analogs by TMAH Thermochemolysis for the Sample Analysis at Mars Wet Chemistry Experiment on the Curiosity Rover, Astrobiology 19, 522-546, DOI: 10.1089/ast.2018.1819.  Link to Article

Sun, V.Z., Stack, K.M., Kah, L.C., Thompson, L., Fischer, W., Williams, A.J., Johnson, S.S., Wiens, R.C., Kronyak, R.E., Nachon, M., House, C.H., VanBommel, S., 2019. Late-stage diagenetic concretions in the Murray formation, Gale Crater, Mars, Icarus, 321, 866-890, DOI: 10.1016/j.icarus.2018.12.030.  Link to Article

Rivera-Hernandez, F., Sumner, D.Y., Newsom, H., Gasnault, O., Maurice, S., Stack Morgan, K., Williams, A.J., Wiens, R., Nachon, M., L’Haridon, J., Forni, O., Mangold, N., 2019. Using ChemCam LIBS data to constrain grain size in rocks on Mars: Proof of concept and application to rocks at Yellowknife Bay and Pahrump Hills, Gale crater, Icarus, 321, 82-98, DOI: 10.1016/j.icarus.2018.10.023.  Link to Article

Floyd, M.M., Williams, A.J., Grubisic, A., Emerson, D., 2019. Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Organisms: Implications for Biosignature Detection on Mars, Astrobiology, 19(1), 40-52, DOI: 10.1089/ast.2017.1745.  Link to Article

2017

Cousin, A., Dehouck, E., Meslin, P.-Y., Forni, O., Williams, A.J., Stein, N., Gasnault, O., Bridges, N., Ehlmann, B., Schröder, S., Payré, V., Rapin, W., Pinet, P., Sautter, V., Maurice, S., Wiens, R.C., 2017. Geochemistry of the Bagnold Dune Field as observed by ChemCam, and comparison with other aeolian deposits at Gale crater. Journal of Geophysical Research, Planets, 122, doi: 10.1002/2017JE005261.  Link to Article

Edgar, L.A., Gupta, S., Rubin, D.M., Lewis, K.W., Kocurek, G.A., Anderson, R.B., Bell III, J.F., Dromart, G., Edgett, K.S., Grotzinger, J.P., Hardgrove, C., Kah, L.C., Leveille, R., Malin, M.C., Mangold, N., Milliken, R.E., Minitti, M., Palucis, M. Rice, M., Rowland, S.K., Schieber, J., Stack, K.M., Sumner, D.Y., Wiens, R.C., Williams, R.M.E., Williams, A.J., 2017. Shaler: In Situ Analysis of a Fluvial Sedimentary Deposit on Mars. Sedimentology, doi: 10.1111/sed.12370.          Link to Article

Hays, L.E., Graham, H.V., Des Marais, D.J., Hausrath, E., Horgan, B., McCollom, T.M., Parenteau, M.N., Potter-McIntyre, S.L., Williams, A.J., Lynch, K.L., 2017. Biosignature Preservation and Detection in Mars Analog Environments. Astrobiology, 17(4), 363-400, doi: 10.1089/ast.2016.1627.  Link to Article

Wilhelm, M.B., Davila, A.F., Eigenbrode, J.L., Parenteau, M.N., Jahnke, L.L., Liu X.-L., Summons, R.E., Wray, J.J., Stamos, B.N., O’Reilly, S.S., Williams, A.J., 2017. Xeropreservation of functionalized lipid biomarkers in hyperarid soils in the Atacama Desert. Organic Geochemistry, doi: http://dx.doi.org/10.1016/j.orggeochem.2016.10.015.  Link to Article

Williams, A.J., Alpers, C.N., Sumner, D.Y., Campbell, K., 2017. Filamentous Hydrous Ferric Oxide Biosignatures in a Pipeline Carrying Acid Mine Drainage at Iron Mountain Mine, California, Geomicrobiology Journal, 34:3, 193-206 doi: 10.1080/01490451.2016.1155679.  Link to Article

2016

Mangold, M., Schmidt, M.E., Fisk, M., Forni, O., McLennan, S., Ming, D., Sautter, V., Sumner, D., Williams, A.J., Clegg, S., Cousin, A., Gasnault, O., Gellert, R., Grotzinger, J.P., Wiens, R., 2016. Classification scheme for sedimentary and igneous rocks in Gale crater, Mars. Icarus, http://dx.doi.org/10.1016/j.icarus.2016.11.005.  Link to Article

Blomgren, V., Williams, A.J., Crossey, L.J., Karlstrom, K.E., Goff, F., 2016. Identifying the sources of CO₂ in carbonic springs in the Albuquerque-Belen basin. in: Guidebook 67 – Geology of the Belen Area, Eds: Frey, Bonnie A.; Karlstrom, Karl E.; Lucas, Spencer G.; Williams, Shannon; Ziegler, Kate; McLemore, Virginia; Ulmer-Scholle, Dana S., New Mexico Geological Society 67th Annual Fall Field Conference Guidebook, pp. 419-427.  Link to Field Guide

Oehler, D.Z, Mangold, N., Hallet, B., Fairén, A.G., Le Deit, L., Williams, A.J., Sletten, R.S., Martínez-Frías, J.,  2016. Origin and Significance of Decameter-Scale Polygons in the Lower Peace Vallis Fan of Gale Crater, Mars. Icarus, 277, 56-72, doi.org/10.1016/j.icarus.2016.04.038.  Link to Article

Mangold, N., Thompson, L., Forni, O., Fabre, C., Le Deit, L., Wiens, R., Williams, A.J., Williams, R., Anderson, R., Blaney, D., Calef, F., Cousin, A., Clegg, S., Dromart, G., Dietrich, W., Edgett, K., Fisk, M.R., Gasnault, O., Gellert, R., Grotzinger, J., Kah, L., Le Mouelic, S., McLennan, S., Maurice, S., Meslin,P.-Y., Newsom, H.E., Palucis, M., Rapin, W., Sautter, V., Siebach, K., Stack, K., Sumner, D., Yingst, R.A. 2016. Composition of conglomerates analyzed by the Curiosity rover: Implications for Gale crater crust and sediment sources, Journal of Geophysical Research, Planets, 353-387, doi:10.1002/2015JE004977.  Link to Article

2015

Williams, A.J., Sumner, D.Y., Alpers, C.N., Karunatillake, S., Hofmann, B.A., 2015. Preserved filamentous microbial biosignatures in the Brick Flat gossan, Iron Mountain, CA, Astrobiology, v.15 (8), p.637-668.  Link to Article

Anderson, R., Bridges. J.C., Williams, A.J., Edgar, L., Ollila, A., Williams, J., Nachon, M., Mangold, N., Schieber, J., Gupta, S., Dromart, G.; Wiens, R., Le Mouélic, S., Forni, O., Lanza, N., Mezzacappa, A., Sautter, V., Fisk, M., Blaney, D., Clark, B., Clegg, S., Gasnault, O., Lasue, J., Léveillé, R., Lewin, E., Lewis, K., Maurice, S., Newson, H., Schwenzer, S., Vaniman, D., 2015. ChemCam Results from the Shaler Outcrop in Gale Crater, Mars, Icarus, v. 249, p. 2-21, doi: 10.1016/j.icarus.2014.07.025.  Link to Article

2013

Williams, A.J., Crossey, L.J., Karlstrom, K.E., Newell, D., Person, M., Woosley, E., 2013. “Hydrogeochemistry of the Middle Rio Grande aquifer system – fluid mixing and salinization of the Rio Grande due to fault inputs”, Chemical Geology, v. 351, p. 281-298, doi: 10.1016/j.chemgeo.2013.05.029.  Link to Article

2009

Williams, A.J., Andersen, C.B., and Lewis, G.P., 2009. “Evaluating the Effects of Sample Processing Treatments on Alkalinity Measurements”, Journal of Hydrology, v. 377, p. 455-464, doi: 10.1016/j.jhydrol.2009.09.007.  Link to Article

Invited Talks, Interviews, and Public Outreach

• Interview for Universe Today “New Perseverance Rock Samples Were Altered by Water. They’ll be Coming Back to Earth in the Sample Return Mission” by Matthew Williams, August 31, 2022
• Interview for Forbes “Found On Mars: Rocks ‘Altered by Water’ That Could Contain Traces Of Ancient Life” by Jamie Carter, August 25, 2022
• Press Release with UF News “Mars rover team, with UF scientist, collects Martian rocks for return to Earth”, by Eric Hamilton, August 25, 2022
  • Related international article pickups on: Yahoo News, The Daily Mail, The Evening Standard, Mirror, Engineering and Technology, Express & Star, Newsweek, Down To Earth
• Interview for Inside Outer Space “Mars Biosignature of Life Found?” by Leonard David, August 24, 2022
• Interview for The Planetary Society “NASA’s InSight mission is dying. Next could come ‘Mars Life Explorer’” by Jamie Carter, August 22, 2022
• Interview with WMFE Public Radio Podcast “Are We There Yet?” “Curiosity’s decade of discovery on Mars” by Brendan Byrne, August 16, 2022
• Quote in Space.com Probing the Red Planet: Finding past life at Jezero crater” by Leonard David, August 10, 2022 
• Quote in Space.com “NASA’s Mars Life Explorer mission would dig deep to hunt for Red Planet life” by Leonard David, July 11, 2022
• Invited Speaker – Sunrise Rotary Club, Gainesville, FL, May 2022
• National Academy of Science Distinctive Voices series Invited Speaker “The Curiosity to Explore and the Perseverance to Rove: A Decade of Discoveries on Mars” June 8, 2022
• Interview for 1001: Intro to Everything podcast “Life on Mars, Astrobiology, and Geology with NASA”, interview with Andres Pulido, May 27, 2022
• NASA/ Caltech Jet Propulsion Lab Science Visitor and Colloquium Program Invited Speaker in Planetary Science Seminar Series: “Best-Laid Plans: Challenges and Opportunities in the Search for Life Beyond Earth” May 23, 2022
• Quote in Wired “With Dusty Solar Panels, InSight’s Days on Mars Are Numbered” by Ramin Skibba, May 17, 2022
• Article for ‘Curious Kids’, The Conversation “Could People Breathe the Air on Mars” by Phylindia Gant and Amy Williams, May 16, 2022. Update as of June 2022 one of the most highly read articles on The Conversation.
• Quote in The Space Review (SpaceNews) “The Future of Mars Science Missions” by Jeff Foust, May 9, 2022
• Mars Exploration Program Analysis Group (MEPAG) Invited Briefing on the Decadal Survey prioritization of the Mars Life Explorer Mission Concept, MEPAG Meeting 39, Denver, CO, May 2, 2022
• Mars Exploration Program Office Invited Briefing on the Decadal Survey prioritization of the Mars Life Explorer Mission Concept, April 29, 2022
• Interview with WMFE Public Radio Podcast “Are We There Yet?” “The case for Uranus: Outlining the next decade of discovery” by Brendan Byrne, April 26, 2022
• Stetson University Invited Seminar Speaker – Gillespie Museum Science Café and Armchair Geology Series, “The Curiosity to Explore and the Perseverance to Rove: A Decade of Discoveries on Mars” April 14, 2022
• National Academies of Science, Engineering, and Medicine, Space Science Week Keynote Public Lecture “The Curiosity to Explore and the Perseverance to Rove: A Decade of Discoveries on Mars” March 22, 2022
• Interview with University of Florida ‘From Florida’ Podcast “Meet the astrobiologist and her students who are searching for life on Mars” by Nicci Brown, March 15, 2022
• Interview for NPR Morning Edition “NASA’s Perseverance rover marks its first year hunting for past life on Mars” by Brendan Byrne, February 18, 2022. Related article pickup on WMFE
• Interview with the New York Times “On Mars, a NASA Rover and Helicopter’s Year of Surprise and Discovery” by Kenneth Chang, February 15, 2022
• Interview with United Press International Mars rover Perseverance notches a year of science, tech achievements”, by Paul Brinkmann, February, 14, 2022
• Interview for National Geographic “Why Signs of Life on Mars Remain So Mysterious” by Nadia Drake, January 31, 2022
• University of Minnesota – Twin Cities. Invited Seminar Speaker – Colloquium, Department of Earth and Environmental Science, “One Planet, Two Planets, Red Planet, Blue Planet” November 19, 2021
• Expert Interview for Inside Science. “Chilean Rocks Aid the Search for Life on Mars” by Zack Savitsky, November 16, 2021
• Interview with WMFE Public Radio Podcast “Are We There Yet?” “From Mars to Jupiter, the latest findings from the space probes exploring our solar system”, by Brendan Byrne, October 2021
• Interview with Popular Science. “Mars’ barren Jezero crater had a wet and dramatic past”, by Kate Baggaley, October 2021

Related article pickup on MSN

•  Interview with United Press International.“Perseverance rover’s images confirm flood episodes on Mars”, by Paul Brinkmann, October 2021

Related international article pickups on CNN.com, Cosmos Magazine, The Daily Mail, The Guardian, Science Alert, Gizmodo, SpaceRef, The Debrief

• Interview with Furman University Magazine.“Is There Life Beyond Earth?”, by Liv Osby, October 2021
• Interview and Video for University of Florida News 2021 – Highlights of First Scientific Publication from the NASA Perseverance rover mission, UF Research Promotion Initiative Award, Video & Article, by Alisson Clark, October 2021
• Florida State University. Invited Seminar Speaker – Colloquium, Department of Earth, Ocean, and Atmospheric Science, October 8, 2021
• Invited Speaker – Rotary Club of Downtown Gainesville, Gainesville, FL, July 2021
• Interview with American Chemical Society Chemical & Engineering News (C&EN) ‘Stereo Chemistry Podcast’ with Samuel Lemonick, May 2021. “Where is the Water on Mars?”
• Invited Speaker – Sunrise Rotary Club, Gainesville, FL, April 2021
• University of Southern California. Invited Seminar Speaker – Paleoenvironmental Seminar, Department of Earth Science, March 5, 2021.
• Interview with Canadian Broadcasting Corp (CBC) radio show As It Happen. With Carol Off and Chris Howden, 2021 Podcast
• Interview with WMFE Public Radio “Are We There Yet?” “Welcome to Mars, Percy. It’s time to do science.” Podcast & Article, by Brendan Byrne, 2021
•  Interview & Q&A with Launch Pad Astronomy LiveStream Show. “Mars Perseverance with Dr. Amy Williams”, hosted by Christian Ready, 2021
•  Interview for First at Five WUFT News. <https://t.co/T90Bi9fPaA?amp=1>, by Taylor Levesque, 2021
• Interview with WUFT News. “Amy Williams is a UF Geology Professor During the Day, NASA Scientist by Night”, by Maybel Cerrato, 2021
• Interview with The Alligator “UF assistant professor on NASA’s Perseverance rover team talks Mars landing”, by Abigail Hasebroock, 2021
• Interview with WUFT News Noticias. “Profesora de UF hace parte del equipo de Perseverance, la sonda que acaba de aterrizar en Marte”, by Valentina Angel, February 2021
• Interview and Video for University of Florida News 2021 – Mars Perseverance Rover Mission Article & Video, by Alisson Clark, February 2021
• Interview with Inverse.com Science Article. “Searching for Life in the Solar System” by JoAnna Wendel, 2020
• Scientist in Every Florida School (SEFS) Program. Outreach lecture on the Definition of Life and How to Search for Life on Mars delivered to 5 of Ms. Leigh Larsen’s classes at Gainesville High School. September 2020. <https://rb.gy/rwljn1>
• Interview with NASA Astrobiology ‘Countdown to Mars’ for the Perseverance Rover Launch 2020 Video
• Interview with University of Florida University Relations. “Searching for Life on Mars with Dr. Amy Williams”, by Alisson Clark & Bri Lehan, 2019
• Louisiana State University. Invited Endowed Seminar Speaker, Department of Geology and Geophysics, 2018.
• Virginia Polytechnic Institute and State University. Invited Seminar, Department of Geosciences, 2018.
• University of Florida. Invited Seminar, Department of Geological Sciences, 2018.
• Interview for Forbes Science Article. “NASA’s Search for Transfats and Other Fatty Acids on Mars” by Bruce Dorminey, December 2017
• University of Maryland, College Park. Invited Seminar, Department of Geology, 2016.
• Washington and Lee University. Invited Seminar, Department of Geology, 2015.
• ‘Mars Through Time’ Professional Development Training Course. Invited Talks, Lunar and Planetary Institute, 2014 and 2015
• Johns Hopkins Applied Physics Laboratory. Invited Seminar, Space Exploration Division. 2014
• Water on Mars Launch Unit – Lawrence Hall of Science. Science Adviser, UC Berkeley, 2014 – 2015
• Sevilleta LTER. Invited Seminars, Sevilleta REU Summer Seminar Series, 2009 and 2014
• TEDxUCDavis. “Exploring the Final Frontier: Amy Williams at TEDxUCDavis” Invited Talk, UC Davis, 2013
• The Triple Helix, UCD Chapter. Invited talk, University of California, Davis, 2012

Professional Service

AGU Planetary Sciences Section Canvassing Committee member (2022)

Panel Member for the National Academy of Science Planetary Science & Astrobiology Decadal Survey 2023-2032, Panel on Mars (2020-2021) https://rb.gy/ooqm7v

Science Champion for the Mars Life Explorer Planetary Mission Concept Study selected for study by the National Academy of Science Planetary Science & Astrobiology Decadal Survey 2023-2032 (2021)

Panel Member for the National Academy of Science Planetary Science & Astrobiology Decadal Survey 2023-2032, State of the Profession (DEIA) Working Group (2020-2021)

Panel Reviewer for NASA grant review panels (2022, 2020, 2017), external reviewer for 2 NASA grant review panels (2017, 2016), executive secretary for 1 NASA grant review panel (2013)

Writing committee member for the “Biosignature Preservation and Detection in Mars Analog Environments” conference, 2016

Peer reviewer for:
Environmental Science and Pollution Research (2013)
Geomicrobiology Journal (2015)
Chemical Geology (2016)
Extremophiles (2017)
American Mineralogist (2017)
Earth and Space Science (2018)
Frontiers in Microbiology (2018)
Astrobiology (2019, 2020, 2021, 2022)
Geobiology (2020)
Icarus (2020)
Journal of Hydrology (2020)
Scientific Reports (2020)
Nature Communications (2021)
Journal of Geophysical Research – Planets (2022)
Independent Review of the Community Report from the Biosignature Standards of Evidence Workshop: Report Series from National Academies Committee on Astrobiology and Planetary Sciences (2022)

Conference Organizing Committee/ Session Organizer:

• Astrobiology Science Conference (2017) Program Organizing Committee and session co-chair “Novel Geologic Reservoirs for Biosignature Preservation”.
• Astrobiology Science Conference (2022) session primary convener “Deconvoluting Extraterrestrial Organics: Degraded Lipid Biosignatures or Altered Abiotic Meteoritic Organics?” and co- convener for 1) “Astrobiology Investigations Enabled by the NASA Mars 2020 Mission and Sample Return”, 2) “Expanding Views of Mineral-Water-Organic Interactions on Mars, Hydrated Asteroids, and Icy Bodies”, and 3) “Searching for Potential Biosignatures in and around Jezero Crater”
• American Geophysical Union (2022) session primary convener “Exploration of Jezero Delta”

Professional Development and Training

Multicultural Mentoring Workshop, University of Florida – June/ July 2021 – Certificate Earned

Mentoring and Allyship for Faculty Working with Students of Color Panel Discussion, Graduate Student Diversity Research Day Program – April 2021

Early Career Geoscience Faculty Workshop: Teaching, Research and Managing Your Career, National Association of Geoscience Teachers – On the Cutting Edge Program, 2016.

New Faculty Workshop for Chemistry Faculty, Cottrell Scholars Collaborative, 2016.

Undergraduate Teaching & Higher Education Faculty Workshop, Planetary Science Institute, 2015.

Learner-Centered Teaching Workshop, Center for Excellence in Teaching and Learning, UC Davis, 2013.

Seminar on Developing Hybrid and Online Courses, Center for Excellence in Teaching and Learning, UC Davis, 2013.

Moving FORWARD in Space workshop, National Science Foundation Program Focus on Reaching Women for Academics, Research and Development, 2013.

Powerful Pedagogy Workshop Series, Center for Excellence in Teaching and Learning, UC Davis, 2013.

International Geobiology Course, University of Southern California & Colorado School of Mines, 2011.

Preparing for an Academic Career in the Geosciences workshop, National Association of Geoscience Teachers – On the Cutting Edge Program, 2010.

Teaching and Academic Experience

University of Florida:

• Survey of Geobiology (GLY4930/6932) lecture and laboratory instructor, 2019-2022
• Evolution of Earth and Life in North America (GLY3105C) lecture instructor 2020-2021
• Astrobiology Seminar (GLY4930/6932) lecture instructor, 2021

Towson University:

• Physical Geology (GEOL 121) lecture and laboratory instructor, 2015-2018
• Survey of Geobiology (GEOL 470) lecture instructor, 2018
• Methods for Environmental Geochemistry (GEOL 410) lecture and laboratory instructor, 2016, 2018
• Oceanography (GEOL 357) lecture guest instructor, 2017
• Environmental Science Senior Seminar (ENVS 482) guest instructor, 2017
• Topics in Environmental Geology (ENVS 601) graduate level lecture and laboratory instructor, 2016, 2018

University of California, Davis:

• First Year Seminar– 2013 Mars Science Laboratory Rover: Exploring Mars for a Habitable Environment co-instructor, 2013
• The Oceans lecture guest instructor, 2012
• First Year Seminar– 2011 Mars Science Laboratory Rover: Landing Site Selection and Mission to Mars co-instructor, 2011
• Sedimentology and Stratigraphy TA lab instructor, 2011
• The Earth TA lab instructor, 2010
• Geoscience Education Research Study
  • Earth & Planetary Sciences Department, UC Davis, 2011.
  • Institutional Review Board-approved study to assess changes in undergraduate’s understanding of the process of science via earth science literacy development in First Year Seminar course “2011 Mars Science Laboratory Rover: Landing Site Selection and Mission to Mars”.

University of New Mexico:

• Environmental Science capstone course TA lab instructor, 2009
• Introduction to Environmental Science TA lab instructor 2007 – 2009

Mentoring

• Graduate and Undergraduate Research Advisor and Mentor Department of Geological Sciences, University of Florida, 2018- present.
  • Served as the primary faculty research advisor for 3 Ph.D., 1 MSc, 7 undergraduate, and 2 high school students. In total I have mentored 43 students including 21 female and 13 minority students.
• Graduate and Undergraduate Research Advisor and Mentor Department of Physics, Astronomy, and Geosciences, Towson University, 2015-2019.
  • Served as the primary faculty research advisor for 1 MSc and 16 undergraduate students. Directed the senior research project for 15 undergraduate senior thesis students.
• Undergraduate/ Intern Research Advisor and Mentor Earth and Planetary Sciences Department, UC Davis, 2009-2014.
  • Served as the primary graduate research advisor for two undergraduate students (one geology major and one engineering major) and one high school intern.
• Undergraduate Research Advisor and Mentor Earth & Planetary Sciences Department, University of New Mexico, 2008-2010.
  • Served as the primary graduate research advisor for five undergraduate students as part of the Sevilleta Research Experience for Undergraduates program

Abstracts

* indicates student advisee

1. Williams, A.J., W. Abbey, T. Bosak, A.J. Brown, A. Burton, T. Fornaro, A. Fox, S. Gupta, K.P. Hand, J. Razzell Hollis, C. Lee, K. Moore, S. Neveu, R.C. Wiens, P.A. Willis, M.-P. Zorzano, K.A. Farley. Influence of Sedimentology and Mineralogy on the Potential for Organics Detection in the Rock Record at Jezero Crater, Mars, American Geophysical Union Fall Meeting, December 2021.
2. Mojarro, A., A.J. Williams, M. Millan, J.L. Eigenbrode, R.E. Summons. A Re-Analysis of Murchison Meteorite Using Tetramethylammonium Hydroxide (TMAH) Thermochemolysis Under Simulated Sample Analysis at Mars (SAM) Pyrolysis GC-MS Conditions, American Geophysical Union Fall Meeting, December 2021.
3. Millan, M., A.J. Williams, A. McAdam, J. Eigenbrode, C. Freissinet, D. Glavin, C. Szopa, A. Buch, R. Williams, D. Archer Jr., B. Sutter, J. Lewis, G. Wong, H. Franz, J. Stern, R. Navarro-Gonzalez, V. Fox, A. Bryk, K. Bennett, A. Steele, S. Teinturier, C. Malespin, S. Johnson, P. Mahaffy. Characterization of Organic Molecules in the Glen Torridon Region of Gale crater, Mars, by the SAM Instrument Aboard Curiosity, American Geophysical Union Fall Meeting, December 2021.
4. Mangold, N., S. Gupta, O. Gasnault, G. Dromart, J. Tarnas, S. Sholes, B. Horgan, C. Nataf, A. Brown, S. Le Mouelic,  A. Yingst, J.F. Bell III, O. Beyssac, T. Bosak, F.J. Calef III, B. Ehlmann, K. Farley, J. Grotzinger, K. Hickman-Lewis, S. Holm-Alwmark, L. Kah, J. Martínez-Frías, S. McLennan, S. Maurice, J. Núñez, A. Ollila, P. Pilleri, J. Rice, M. Rice, J. Simon, D. Shuster, K. Stack, V. Sun, A. Treiman, B. Weiss, R. Wiens, A.J. Williams, N. Williams, K. Williford and Mars 2020 Science Team. Observations of the Jezero Crater Delta Front by Perseverance Cameras, American Geophysical Union Fall Meeting, December 2021.
5. Roach, J.*, A.J. Williams, J. Eigenbrode, M. Millan, R. Williams, A. Buch, S. Teinturier, D. Glavin, C. Freissinet, C. Szopa, O. McIntosh, S.S. Johnson, C. Knudson, J. Lewis, A. McAdam, R. Navarro-Gonzalez, V. Fox, A. Bryk, R. Summons, A. Mojarro, A. Steele, C. House, H. Franz, W. Brinckerhoff, C. Malespin, P. Mahaffy. Organic Molecules on Mars: Results from the First In Situ TMAH Thermochemolysis Experiment at Gale Crater, Mars. American Geophysical Union Fall Meeting, December 2021.
6. Stack, K.M., Farley, K., Williford, K., and the Mars 2020 Science Team (including A.J. Williams). The Mars 2020 Perseverance Rover’s Science Mission in Jezero Crater. Geological Society of America Abstracts with Programs, October 2021.
7. Sturrup. C.*, M. Rogers*, and A. J. Williams. Organics Detection in Acid Mine Drainage Sediments, with Implications for Organics Preservation in Iron-Rich Acid and Saline Environments on Mars. UF Undergraduate Research Symposium, March 2021.
8. Boles, H.O.*, A. J. Williams, D. Oehler. Organics Detection in Ancient Cratonic Rocks with TMAH Wet Chemistry. UF Undergraduate Research Symposium, March 2021.
9. Prescott, E.*, Williams, A.J. Organics Detection in Icelandic Spring Deposits. UF Undergraduate Research Symposium, March 2021.
10. Williams, A.J., J. Eigenbrode, M. Millan_, R.H. Williams, A. Buch, S. Teinturier, D.P. Glavin, C. Freissinet, C. Szopa, O. McIntosh, S.S. Johnson, C. Knudson, J.M.T. Lewis, A. McAdam, R. Navarro-González, V. Fox, A.B. Bryk, R. Summons, A. Mojarro, A. Steele, H. Franz, W. Brinckerhoff, C. Malespin, P. R. Mahaffy. Organic Molecules Detected with the First TMAH Wet Chemistry Experiment, Gale Crater, Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
11. Williams, A.J., N. L. Lanza, M. Millan, A. McAdam, C.H. House, J.M.T. Lewis, E. Rampe, W.W. Fischer, A.M. Ollila, M. Thorpe, P. Mahaffy. Organic Matter Heterogeneity in the Mary Anning/ Groken Drill Site, Gale Crater, Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
12. Kivrak. L.*, A.J. Williams, A. Buch, Y. He. Trimethylsulfonium Hydroxide (TMSH) Thermochemolysis With Py-GC-MS as a Method of Organic Biosignature Detection: Optimization for Nucleobase Detection. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
13. Judge, L.E.*, A. J. Williams, N. L. Lanza, A. M. Ollila, M. N. Spilde, V. W. Lueth. Determining the Biosignature Preservation Potential of Manganese Oxides Using Laboratory and Spaceflight Analysis Techniques. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
14. Sturrup. C.*, M. Rogers*, and A. J. Williams. Organics Detection in Acid Mine Drainage Sediments, with Implications for Organics Preservation in Iron-Rich Acid and Saline Environments on Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
15. Boles, H.O.*, A. J. Williams, D. Oehler. Organics Detection in Ancient Cratonic Rocks with TMAH Wet Chemistry. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
16. Millan, M., A.J. Williams, A. McAdam, J.L. Eigenbrode, C. Freissinet, D.P. Glavin, C. Szopa, A. Buch, R.H. Williams, R. Navarro-Gonzalez, J.M.T. Lewis, V. Fox, A.B. Bryk, K. Bennett, A. Steele, S. Teinturier, C. Malespin, S.S. Johnson, P.R. Mahaffy. Organic Molecules Revealed in Glen Torridon by the SAM Instrument. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
17. McAdam, A.C., B. Sutter, P. D. Archer, H. B. Franz, J. L. Eigenbrode, C. A. Knudson, J. M. T. Lewis, G. M. Wong, J. V. Clark, M. Millan, A. J. Williams, S. Andrejkovičová, C. Freissinet, D. P. Glavin, J. C. Stern, R. Navarro- González, C. N. Achilles, D. W. Ming, R. V. Morris, T. F. Bristow, E. B. Rampe, M. T. Thorpe, A.S. Yen, C. H. House, A. B. Bryk, V. K. Fox, K. A. Bennett, S. S. Johnson, P. R. Mahaffy, C. A. Malespin. Investigation of the Glen Torridon Clay-Bearing Unit and Overlying Greenheugh Pediment by the Sample Analysis at Mars Instrument Suite. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
18. Lanza, N.L. P. J. Gasda, A. Essunfeld, J. Comellas, G. Caravaca, E. Rampe, A.J. Williams, P.Y. Meslin, E. Dehouck, N. Mangold, W. Rapin, R. Hazen, W.W. Fischer, A.M. Ollila, C. House, R.C. Wiens. Chemistry of Manganese-Bearing Materials at the Groken Drill Site, Gale Crater, Mars. N Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
19. Weng, M.M., E. Zaikova, M. Millan, A.J. Williams, A. McAdam, C. A. Knudson, K.L. Craft, N.Y. Wagner, S.K. Nawotniak, J. L. Heldmann, S.S. Johnson. Life in the Dark: The Blue Dragon Flow as an analog for the Martian Subsurface. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
20. Navarro-González, R., K. F. Navarro, P. Coll, C. P. McKay, B. Sutter, J. C. Stern, P. D. Archer, A. C. McAdam, C. Szopa, C. Freissinet, H. B. Franz, A. Buch, B. D. Prats, M. Millan, J. L. Eigenbrode, D. Coscia, S. Teinturier, J.-Y. Bonnet, D. P. Glavin, A. J. Williams, F. Raulin, M. Cabane, D. W. Ming, C. A. Malespin, P. Mahaffy, F. J. Martín-Torres, M.-P. Zorzano-Mier, S. Atreya, A. Fraeman, A. R. Vasavada. Abiotic Input of Fixed Nitrogen by Bolide Impacts in CH₄+CO₂+N₂ and H₂+CH₄+CO₂+N₂ Atmospheres. Comparison with Nitrate Levels Measured by the Curiosity Rover’s Sample Analysis at Mars Instrument. Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
21. Navarro-González, R., P. Coll, C. Szopa, C. Freissinet, A. Buch, C.P. McKay, O. McIntosh, M. Millan, P.D. Archer, J.L. Eigenbrode, B. Sutter, B.D. Prats, A.J. Williams, A.C. McAdam, H.B. Franz, A. Steele, S. Atreya, G.M. Wong, J.C. Stern, D.W. Ming, D. Coscia, S. Teinturier, J.-Y. Bonnet, J.V. Clark, C.H. House, D.P. Glavin, F. Raulin, M. Cabane, C.A. Malespin, P. Mahaffy, F.J. Martín-Torres, M.-P. Zorzano-Mier, P.‐Y. Meslin, J.A. Rodriguez-Manfredi, A. Fraeman, A.R. Vasavada. Search Of Phosphine In The Evolved Gases From Hypophosphite/ Phosphite Minerals In Lacustrine Sedimentary Rocks At Gale Crater By The Sample Analysis At Mars Lunar and Planetary Science Conference, The Woodlands, TX, March 2021.
22. Williams, A.J., J. Eigenbrode, R.H. Williams, A. Buch, S. Teinturier, M. Millan, D.P. Glavin, C. Freissinet, C. Szopa, S.S. Johnson, C. Knudson, J.M.T. Lewis, A. McAdam, R. Navarro-González, C. Malespin, P.R. Mahaffy. Results from the TMAH Wet Chemistry Experiment on the Sample Analysis at Mars (SAM) Instrument Onboard NASA’s Curiosity Rover. COSPAR, January 2021. [Invited talk].
23. McAdam, A.C., B. Sutter, P. D. Archer, H. B. Franz, J. L. Eigenbrode, J. C. Stern, C. A. Knudson, J. M. T. Lewis, G. M. Wong, M. Millan, S. Andrejkovičová, J. V. Clark, C. N. Achilles, D. W. Ming, R. V. Morris, T. F. Bristow, E. B. Rampe, R. Navarro-González, S. S. Johnson, A. J. Williams, P. R. Mahaffy. Constraints on the Mineralogy and Chemistry of the Glen Torridon Clay-Bearing Unit from the Sample Analysis at Mars (SAM) Instrument on NASA’s Curiosity Rover. COSPAR, January 2021.
24. Millan, M., K. Campbell, M. Van Kranendonk, C. Sriaporn, K. Handley, A.J. Williams, L. Chou, P.R. Mahaffy, S.S. Johnson. Preservation and Detection of Lipid Biosignatures in Modern Hot Spring Deposits using the Flight-like Experiments from the SAM and MOMA Instruments. COSPAR, January 2021.
25. Navarro-González, R., K.F. Navarro, J. Urrutia-Fucugauchi, C.P. McKay, L. Pérez-Cruz, P. Coll, J.L. Eigenbrode, A.J. Williams, C.A. Malespin, P.R. Mahaffy, F.J. Martín‐Torres, M.P. Zorzano‐Mier. Thiophene trends in sediments of two impact craters: Chicxulub and Gale.  Implications to surface environmental conditions. COSPAR, January 2021.
26. Williams, A.J., J. Eigenbrode, R.H. Williams, A. Buch, S. Teinturier, M. Millan, D.P. Glavin, C. Freissinet, C. Szopa, S.S. Johnson, C. Knudson, J.M.T. Lewis, A. McAdam, R. Navarro-González, V. Fox, A.B. Bryk, R. Summons, W. Brinckerhoff, C. Malespin, P.R. Mahaffy. The Search for Fatty Acids on Mars: Results from the First In Situ Thermochemolysis Experiment at Gale Crater, Mars. AGU Fall 2020 Meeting, December 2020 [Invited talk].
27. Shaner, S.E.*, A. J. Williams, G. Zhuang. Organics Preservation In The Hyperarid Qaidam Basin, China: An Analog For Fluvio-Lacustrine Deposits In Gale Crater, Mars. University of Florida Undergraduate Research Symposium, Gainesville, FL, April 2020.
28. Sturrup, C.*, M. Rogers*, and A. J. Williams. Organics Detection in Acid Mine Drainage Sediments, with Implications for Organics Preservation in Iron-Rich Acid and Saline Environments on Mars.  University of Florida Undergraduate Research Symposium, Gainesville, FL, April 2020.
29. Burnette, S.*, and Williams, A.J. Preservation of Organic Biosignatures in Icelandic Iron Sinter Springs. University of Florida Undergraduate Research Symposium, Gainesville, FL, April 2020.
30. Williams, A.J., C. Muñoz, S. Shaner*, D. Hu*, P. Thompson*. Organics Preservation And Detection From The El Tatio Geyser Field Digitate Stromatolites, With Implications For Organics Detection In Comparable Digitate Structures From Columbia Hills In Gusev Crater, Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
31. Shaner, S.E.*, A. J. Williams, G. Zhuang. Organics Preservation In The Hyperarid Qaidam Basin, China: An Analog For Fluvio-Lacustrine Deposits In Gale Crater, Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
32. Sturrup, C.*, M. Rogers*, and A. J. Williams. Organics Detection in Acid Mine Drainage Sediments, with Implications for Organics Preservation in Iron-Rich Acid and Saline Environments on Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
33. Judge, L.*, Shaner, S.*, Kivrak, L.*, Williams, A.J., Lanza, N., Spilde, M. Geobiology of Manganese Oxides. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
34. Kivrak, L.*, Shaner, S.*, Judge, L.*, Williams, A.J. Trimethylsulfoniumhydroxide (TMSH) as a Thermochemolysis Reagent For Detecting Fatty Acid Methyl Esters In Iron Oxide And Siliceous Sinter Mars-Analog Rocks. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
35. Millan, M., C. Pozarycki, A. McAdam, S. Andrejkovičová, P. Mahaffy, D. Glavin, A. Buch, C. Szopa, C. Freissinet, A. Srivastava, S. Teinturier, C. Malespin, R. Williams, A.J. Williams, J. Eigenbrode, R. Navarro-Gonzalez, S. S. Johnson. Optimization of the Sample Analysis at Mars Wet Chemistry Experiment for the Detection of Organics in Glen Torridon. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
36. Fraeman, A.A., L. A. Edgar, E. B. Rampe, J. L’Haridon, N. Mangold, L. Thompson, J. Frydenvang, C. M. Fedo, J. P. Grotzinger, J. G. Catalano, V. Z. Sun, C. House, C. Hardgrove, T. S. J. Gabriel, S. Czarnecki, A. R. Vasavada, R. V. Morris, R. E. Arvidson, A. Bryk, S. Banham, K. Bennett, J. C. Bridges, W. Dietrich, C. S. Edwards, W. W. Fischer, V. K. Fox, S. Gupta, B. Horgan, S. Jacob, J. R. Johnson, S. S. Johnson, D. M. Rubin, M. Salvatore, S. P. Schwenzer, K. Siebach, N. T. Stein, K. M. Stack, S. Turner, D. Wellington, A.J. Williams.^. The Origin of Vera Rubin Ridge: Overview and Results from Curiosity’s Exploration Campaign. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
37. McAdam, A.C., B. Sutter, P. D. Archer, H. B. Franz, J. L. Eigenbrode, J. C. Stern, C. A. Knudson, J. M. T. Lewis, G. M. Wong, M. Millan, S. Andrejkovičová, J. V. Hogancamp, C. N. Achilles, D. W. Ming, R. V. Morris, T. F. Bristow, E. B. Rampe, R. Navarro-Gonzalez, S. S. Johnson, A. J. Williams, P. R. Mahaffy. The Chemistry and Mineralogy of the Clay-Bearing Unit from Sample Analysis at Mars Analyses. Lunar and Planetary Science Conference, The Woodlands, TX, March 2020.
38. Williams, A.J., C. Muñoz, K. Craft, M. Milan, S.S. Johnson, P. Thompson*, D. Hu*, Martian hot spring deposits as a depot for biosignatures (and extant life?).  Mars Extant Life Conference, Carlsbad, NM, November 2019.
39. Fraeman, A.A, R.E. Arvidson, L. Edgar, C.M. Fedo, W. W. Fischer, B. Horgan, J. L’Haridon, J.P. Grotzinger, S. Gupta, N.L. Lanza, R. Milliken, R.V. Morris,  M. Salvatore, K. Siebach, K.M. Stack, L. Thompson, V. Sun, R.C. Wiens, A.J. Williams. The Origin of Vera Rubin Ridge: Oxidative Weathering on Mars? Goldschmidt Conference, Barcelona, Spain, August 2019.
40. Freissinet, C., D. P. Glavin, A. Buch, C. Szopa, S. Teinturier, P. D. Archer, A.J. Williams, R. Williams, M. Millan, A. Steele, R. Navarro-Gonzalez, C. H. House, C. A. Malespin, P. Mahaffy. Detection of Long-Chain Hydrocarbons on Mars with the Sample Analysis at Mars (SAM) Instrument. Ninth International Conference on Mars, Pasadena, CA, July 2019.
41. McAdam, A.C., B. Sutter, P.D. Archer, H.B. Franz, J.L. Eigenbrode, J.C. Stern, C.A. Knudson, J.M.T. Lewis, G.M. Wong, S. Andrejkovičová, J.V. Hogancamp, C.N. Achilles, D.W. Ming, R.V. Morris, T.F. Bristow, E.B. Rampe, R. Navarro-Gonzalez, S. S. Johnson, A.J. Williams, P.R. Mahaffy. Constraints on the Chemistry and Mineralogy of the Clay-Bearing Unit from Sample Analysis at Mars Evolved Gas Analyses. Ninth International Conference on Mars, Pasadena, CA, July 2019.
42. Millan, M., C.A. Malespin, C. Freissinet, D.P. Glavin, P.R. Mahaffy, A. Buch, C. Szopa, A. Srivastava, S. Teinturier, A.J. Williams, A. McAdam, D. Coscia, J. Eigenbrode, E. Raaen, J. Dworkin, R. Navarro-Gonzalez, S.S. Johnson. Lessons Learned From the Full Cup Wet Chemistry Experiment Performed On Mars with the Sample Analysis at Mars Instrument. Ninth International Conference on Mars, Pasadena, CA, July 2019.
43. Skok, J.R., J. Gaskin, J. Edmunson, K. Zacny, J. Blank, A.J. Williams, K. Cannon, M. Parente, J. Farmer, S. Karunatillake. SPRING Mission: Exploring the Past and Enabling the Future of Mars. Ninth International Conference on Mars, Pasadena, CA, July 2019.
44. Floyd, M.M., A.J. Williams, A. Grubisic, D. Emerson. Metabolic processes preserved as biosignatures in iron-oxidizing microorganisms: implications for biosignature detection on Mars. [Invited Talk] Society for Industrial Microbiology and Biotechnology Annual Meeting, Washington, D.C., July 2019.
45. Williams, A.J., C. Muñoz, K. Craft, M. Millan, S. S. Johnson. Martian Hot Spring Deposits as a Depot for Biosignatures (And Extant Life?). Astrobiology Science Conference, Bellevue, WA, June 2019.
46. Williams, R.H., A.J. Williams, A. Buch, C. Freissinet, P.R. Mahaffy. Optimization of Pyrolysis and Trapping Parameters Relevant to the Sample Analysis at Mars Wet Chemistry Experiments.  Astrobiology Science Conference, Bellevue, WA, June 2019.
47. Floyd, M.M., A.J. Williams, A. Grubisic, D. Emerson. Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Microorganisms: Implications for Biosignature Detection on Mars. Astrobiology Science Conference, Bellevue, WA, June 2019.
48. He, Y.Y., A. Buch, M. Morisson, A.J. Williams, C. Szopa, J.L. Eigenbrode, D.P. Glavin, C. Freissinet, M. Millan, S. Johnson, N. Grand, W. Goetz, F. Stalport, R. Navarro-Gonzalez, W. B. Brinckerhoff, F. Goesmann, F. Raulin, P.R. Mahaffy. Optimization of the in situ detection of nucleobases on the MOMA and SAM experiments. Astrobiology Science Conference, Bellevue, WA, June 2019.
49. Rogers, M.*, A.J. Williams, K. Marks*. Characterization and Modeling for Remediation of an Acid Mine Drainage System in Centralia, Pennsylvania. Chesapeake Potomac Regional Chapter of the Society of Environmental Toxicology and Chemistry, April 2019.
50. Leonzo, K.*, Pearson, T.*, Van Ness, T.*, Cotter, T., Capparuccini, D.*, Williams, A.J. The Glen Stream: A Case Study in Urbanized On-Campus Streams. Towson University Environmental Conference. April 2019.
51. Williams, A.J., J.L. Eigenbrode, S.S. Johnson, K.L. Craft, M.B. Wilhelm, S.S. O’Reilly, J.M.T. Lewis, R. Williams, A. McAdam, C.A. Knudson, M. Millan, A. Buch, C. Freissinet, D. Glavin, R.E. Summons, K.C. Benison, C. Szopa, R. Navarro-González, V. Fox, C. Malespin, P. Mahaffy. Preparation for the SAM TMAH Wet Chemistry Experiment Onboard Curiosity: Organics Detection in Mars-Analog Rocks and Candidate Locations for the In Situ Experiment on Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2019.
52. Millan, M., C. A. Malespin, C. Freissinet, D. P. Glavin, P. R. Mahaffy, A. Buch, C. Szopa, A. Srivastava, S. Teinturier, R. Williams, A.J. Williams, A. McAdam, D. Coscia, J. Eigenbrode, E. Raaen, J. Dworkin, R. Navarro-Gonzalez, S. S. Johnson. Lessons Learned From the First Full Cup Wet Chemistry Experiment Performed On Mars with the Sample Analysis at Mars Instrument. Lunar and Planetary Science Conference, The Woodlands, TX, March 2019.
53. Hood, D.R., S. Karunatillake, O. Gasnault, A.J. Williams, B. Dutrow, L. Ojha, S. Kobs, K. Kim, J. L. Heldmann, C. Fralick. Contrasting Regional Soil Hydration Processes across the Topographic Dichotomy of Mars. Lunar and Planetary Science Conference, The Woodlands, TX, March 2019.
54. Fox, V.K., K. A. Bennett, T. Bristow, B. Ehlmann, C. House, A. G. Fairén, B. Horgan, S. Johnson, M. Salvatore, K. Stack, R.C. Wiens, A.J. Williams, and the MSL Science Team. Exploring the Clay-Bearing Unit with the Curiosity Rover. Lunar and Planetary Science Conference, The Woodlands, TX, March 2019.
55. Williams, A.J., J.L. Eigenbrode, R.H. Williams, M. Millan, S.S. Johnson, K.L. Craft, M.B. Wilhelm, C. Szopa, A. Buch, S.S. O’Reilly, C.A. Knudson, J.M.T. Lewis, K.C. Benison, C. Malespin, P. Mahaffy. Resolution of Fatty Acids in Mars-Analog Samples with the SAM Instrument TMAH Wet Chemistry Experiment.  AGU Fall Meeting, Washington, D.C., December 2018.
56. Marlow, J.G.*, A.J. Williams­­­­, Craft, K., 2018. Microtexture Characterization in Hydrothermal Sinter Cores from Alaska. AGU Fall Meeting, Washington, D.C., December 2018.
57. Johnson, S.S, E. Zaikova, M. Millan, N. Wagner, K. Craft, A.J. Williams, J. Bevilacqua, S. Kobs Nawotniak, A. Shields, Y. Bai, S. Fuqua, A. McAdam, S. S. Hughes, W. B. Garry, J. L. Heldmann, D. S. S. Lim, 2018. Biosignatures in Lava Tubes: The Blue Dragon Flow as an Analog for the Martian Subsurface. AGU Fall Meeting, Washington, D.C., December 2018.
58. Leonzo, K.*, A.J. Williams, T. Pearson*, T. VanNess*, D. Capparuccini*, 2018. An On-Campus Case Study in Urbanized Streams: The Historic Glen Stream, Towson, MD. AGU Fall Meeting, Washington, D.C., December 2018.
59. Bennett, K. A., V. K. Fox, A. R. Vasavada, J. Grotzinger, K. Stack, A.J. Williams, E. Dehouck, C. Edwards, M. Salvatore, and the MSL science team, 2018. Investigating the Clay-Bearing Unit in Gale Crater with the Curiosity Rover. AGU Fall Meeting, Washington, D.C., December 2018.
60. O’Neal, E.W.*, Williams, A.J., 2018. Detection of Physical Biosignatures in Drill Fines via SEM for Future Planetary Missions. AGU Fall Meeting, Washington, D.C., December 2018.
61. Cook, C.L.*, Williams, A.J., K. P. Reber, K. E. Kautzman, M. M. Floyd, 2018. Spectral Characterization of Pterin Molecules: Implications for Detecting Life on Mars. AGU Fall Meeting, Washington, D.C., December 2018.
62. Skok, J.R., J.D. Farmer, M. Juarez Rivera, S. Karunatillake, Williams, A.J., and SSLNP Team, 2018. Seeking Signs of Life in Ancient Martian Hot Springs. AGU Fall Meeting, Washington, D.C., December 2018.
63. Buch, A., Szopa, C., Freissinet, C., Millan, M., Williams, A.J., Williams, R., Glavin, D., Guzman, M., Eigenbrode, J., Malespin, C, Cabane, M, Coscia, D, Bonnet, J.-Y., Teinturier, S, Johnson, S., Navarro-Gonzalez, R., Mahaffy, P. Systematic study of impact of Perchlorate on the derivatization reagents (TMAH and MTBSTFA) onboard SAM. AGU Fall Meeting, Washington, D.C., December 2018.
64. Sun, V. Z., K. M. Stack, L. C. Kah, Williams, A.J., L. Thompson, S. VanBommel, R. C. Wiens, S. S. Johnson, C. H. House, M. Nachon, W. Fischer, R. E. Kronyak, M. E. Minitti, D. Sumner, Diagenetic Concretions in the Murray Formation, Gale Crater, Mars. AGU Fall Meeting, Washington, D.C., December 2018.
65. Millan, M., Williams, A.J., A. Buch, A. Bai, C. Freissinet, C. Szopa, J. L. Eigenbrode, D. P. Glavin, R. Navarro-González, P. Mahaffy, S. S. Johnson, Preservation of Organic Molecules In Mars Analog Samples: Insights From Sam-Like Pyrolysis And Derivatization GCMS Experiments. AGU Fall Meeting, Washington, D.C., December 2018.
66. Meert, J.G., Stofer, K., Matyas, C., Lannon, H., Williams, A.J., Miller, S.R., Geobackgrounds: A brief survey of exposure and knowledge of geology among introductory level geology students in Florida. Geological Society of America Fall 2018 Meeting. Indianapolis, IN, November 2018.
67. Edmunson, J., J.A. Gaskin, and the MVP-SEM Instrument Development and Science Teams (including A.J. Williams), A Miniaturized Variable Pressure Scanning Electron Microscope (MVP-SEM) for Mars,  COSPAR, Pasadena, CA, July 2018.
68. Marlow, J..*, Williams, A.J., 2018,  Microtexture characterization in hydrothermal sinter cores from Alaska. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum. April 2018.
69. Cook, C..*, Williams, A.J., Kautzman, K.E., Floyd, M.M., Emerson, D., 2018. Spectral characterization of pterin molecules: implications for detecting life on Mars. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum. April 2018.
70. Leonzo, K.*, Williams, A.J., 2018. An On-Campus Case Study in Urbanized Streams: the historic Glen Stream, Towson, MD. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum. April 2018.
71. Williams, A.J., J.L. Eigenbrode, S.S. Johnson, K.L. Craft, M.B. Wilhelm, S.S. O’Reilly, J.M.T. Lewis, R. Williams, A. McAdam, C.A. Knudson, M. Millan, A. Buch, C. Freissinet, D. Glavin, R.E. Summons, K.C. Benison, R. Navarro-González, P. Mahaffy, 2018. Fatty acid preservation in Mars-analogous rock samples and detection with the TMAH wet chemistry experiment on the Sample Analysis at Mars (SAM) instrument. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
72. Cook, C.L.*, Williams, A.J., Kautzman, K.E., Floyd, M.M., Emerson, D., 2018. Spectral characterization of pterin molecules: implications for detecting life on Mars. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
73. Edmunson, J., J.A. Gaskin, and the MVP-SEM Science and Instrument Development Teams (including A.J. Williams), 2018. The science case for a scanning electron microscope on Mars. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
74. Fraeman, A.A., L.A. Edgar, J.P. Grotzinger, J.R. Johnson, D.F. Wellington, V.K. Fox, V. Z. Sun, A.J. Williams, 2018. Curiosity’s investigation at Vera Rubin Ridge. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
75. Buch, A., Morisson, M., Szopa, C., Millan, M., Freissinet, C., He, Y., Glavin, D., Bonnet, J.-Y, Coscia, D., Stalport, F., Raulin, F., Stambouli, M., Teinturier, S., Gonzalez, R.N., Malespin, C., Mahaffy, P., Williams, A.J., 2018. Optimization of the TMAH thermochemolysis technique for the detection of trace organic matter on Mars by the SAM and MOMA-pyr-GC-MS experiment. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
76. Newsom, H.E., K. Edgett, D. Fey, R.C. Wiens, J. Frydenvang, S. Banham, S. Gupta, A.J. Williams, J. Grotzinger, N. Mangold, J. Schieber, F. Rivera-Hernandez, 2018. A buried aeolian lag deposit at an unconformity between the Murray and Stimson formations at Marias Pass, Gale Crater, Mars. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
77. Millan, M., Williams, A.J., Buch, A., Bai, A., Freissinet, C., Szopa, C., Eigenbrode, J.L., Glavin, D.P., Mahaffy, P., Johnson, S.S., 2018. Preservation of organic molecules in Mars-analog samples using pyrolysis and derivatization GCMS experiments from the SAM instrument. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2018.
78. Williams, A.J., Eigenbrode, J.L., Wilhelm, M.B., Johnson, S.S., Craft, K., O’Reilly, S., Lewis, J.M.T., Williams, R., Summons, R.E., Benison, K.C., Mahaffy, P.R., 2017, Fatty Acid Detection in Mars-Analogous Rock Samples with the TMAH Wet Chemistry Experiment on the Sample Analysis at Mars (SAM) Instrument (Invited), P42B-05, [Abstract] AGU Fall Meeting, New Orleans, LA, December 2017.
79. Fraeman, A., Bedford, C., Bridges, J., Edgar, L.A., Hardgrove, C., Horgan, B.H.N., Gabriel, T.S.J., Grotzinger, J.P., Gupta, S., Johnson, J.R., Rampe, E.B., Morris, R.V., Salvatore, M.R., Schwenzer, S.P., Stack Morgan, K., Pinet, P.C., Rubin, D.M., Weitz, C.M., Wellington, D.F., Wiens, R.C., Williams, A.J.,  Vasavada, A.R., 2017, Curiosity at Vera Rubin Ridge: Testable Hypotheses, First Results, and Implications for Habitability, P33F-03, [Abstract] AGU Fall Meeting, New Orleans, LA, December 2017.
80. Cousin, A., Dehouck, E., Meslin, P.-Y., Williams, A.J., Stein, N., Gasnault, O., Bridges, N., Ehlmann, B.L., Schröder, S., Payre, V., Rapin, W., Pinet, P.C., Sautter, V., Lanza, N., Lasue, J., Maurice, S., Wiens, R.C, 2017, Comparison of the Active Bagnold Dune Field with Other Aeolian Deposits Observed at Gale using ChemCam Data, P51H-11, [Abstract] AGU Fall Meeting, New Orleans, LA, December 2017.
81. Malespin, C., McAdam, A., Teinturier, S., Eigenbrode, J.L., Freissinet, C., Knudson, C.A., Lewis, J.M., Millan, M., Steele, A., Stern, J.C., Williams, A.J., 2017, Recent select Sample Analysis at Mars (SAM) Testbed analog results, P31A-2801, [Abstract] AGU Fall Meeting, New Orleans, LA, December 2017.
82. Meslin, P.-Y., Cousin, A., Dehouck, E., David, G., Rapin, W., Schröder, S., Forni, O., Gasnault, O., Williams, A.J., Lasue, J., Stein, N., Ehlmann, B.L., Payre, V., Anderson, R.B., Blaney, D.L., Bridges, N.T., Clark , B.C., Frydenvang, J., Gasda, P.J., Johnson, J.R., Lanza, N., l’Haridon, J., Mangold, N., Maurice, S., Newsom, H.E., Ollila, A., Pinet, P.C., Sautter, V., Thomas, N.H., Wien, R.C.,, 2017, From Aeolis Palus to the Bagnold Dunes field: Overview of martian soil analyses performed by ChemCam in Gale Crater (Invited), P51H-12, [Abstract] AGU Fall Meeting, New Orleans, LA, December 2017.
83. Williams, A.J., Craft, K., Skok, J.R., 2017, Fatty Acid Preservation in Active, Recent, and Relic Icelandic Hot Springs as Revealed by On-line TMAH Pyrolysis GCMS, [Abstract] International Astronomical Union Astrobiology Conference, Coyhaique, Chile, November 2017.
84. Williams, A.J., Eigenbrode, J.L., Johnson, S.S., Craft, K., Wilhelm, M.B., O’Reilly, S.S., Summons, R.E., Benison, K.C., Mahaffy, P., 2017, Fatty Acid Detection in Mars-Analogous Rock Samples with the Wet Chemistry Experiment on the Sample Analysis at Mars (SAM) Instrument. [Abstract] Astrobiology Science Conference, April 2017.
85. Craft, K., Williams, A.J., Skok, J.R., 2017, Collection of Samples for Organics Analyses at Iceland Sinter Sites. [Abstract] Astrobiology Science Conference, April 2017.
86. Becraft, J.*, Williams, A.J., 2017, Benthic Macroinvertebrate Populations as a Proxy for the Water Quality of Towson University’s On-Campus Waterways. [Abstract] 8th Annual Towson University Environmental Conference.
87. Evans, S.*, Williams, A.J., 2017, Microtexture Characterization in Hydrothermal Iron Rocks from Iceland. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum.
88. Grams, R.*, Williams, A.J., 2017, Water Quality of Towson University’s Waterways. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum.
89. Seibel, D.*, Williams, A.J., 2017, Towson University’s Impact on Local Stream Water Quality. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum.
90. Becraft, J.*, Williams, A.J., 2017, Benthic Macroinvertebrate Populations as a Proxy for the Water Quality of Towson University’s On-Campus Waterways. [Abstract] Towson University Undergraduate Research and Creative Inquiry Forum.
91. Rowland, S.K., Krezoski, G., Wiens, R., Mangold, N., Williams, A.J., Edgett, K., 2017, The Point Lake outcrop, Gale Crater, Mars: Sandstone or (less likely) Lava Flow? [Abstract] Geological Society of America Cordilleran Regional Meeting. May 2017.
92. Williams, A.J., Becraft, J.*, Dobbis, S.*, Grams, R.*, Seibel, D.*, Moore, J., 2017, Chloride, Metal, and Nutrient Contributions from Urbanized University Campus Waterways, Towson, MD. [Abstract] Geological Society of America Northeastern Regional Meeting. March 2017.
93. Marks, K.*, O’Neal, E.*, Williams, A.J., 2017 Effects of Acid Mine Drainage on Aqueous Geochemistry of Big Mine Run and Mahanoy Creek in East-Central Pennsylvania: A Downstream Evaluation. [Abstract] Geological Society of America Northeastern Regional Meeting. March 2017.
94. O’Neal, E.*, Marks, K.*, Knudson, C.A., McAdam, A., Williams, A.J., 2017, Geobiology of an Acid Mine Drainage Environment along a Stream Gradient, Centralia, PA. [Abstract] Geological Society of America Northeastern Regional Meeting. March 2017.
95. Gasnault, O., Herkenhoff, K.E., Le Mouélic, S., Wiens, R.C., Cousin, A., Williams, A.J., Bridges, N.T., Anderson, R.B., Langevin, Y., Maurice, S., Newsom, H.E., Pinet, P., Rapin, W., Gondet, B., 2017, ChemCam Remote Micro Imager Performance. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2017.
96. Edmunson^, J., Gaskin^, J.A., Doloboff^, I.J., Jerman^, G., on behalf of the MVP-SEM Science and Instrument Development Teams (including A.J. Williams), 2017, Unveiling the Mysteries of Mars with a Miniaturized Variable Pressure Scanning Electron Microscope (MVP-SEM). [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2017.
97. Williams, A.J., Dobbis, S.*, Becraft, J.*, Moore, J., 2016, Stream Health of Towson University Campus Waterways. [Abstract] 22nd Annual Maryland Water Monitoring Council conference. December 2016.
98. Oehler, D.Z., Fairén, A., Mangold, N., Hallet, B., Le Deit, L., Williams, A.J., Sletten, R., Martínez-Frías, J., 2016, Evidence for an Ancient Periglacial Climate in Gale Crater, Mars, [Abstract] American Geophysical Union Fall Meeting, December 2016.
99. Mangold, N., Thompson, L. M., Forni, O., Fabre, C., Le Deit, L., Wiens, R. C., Williams, A. J., Williams, R. M., Anderson, R. B., Blaney, D. L., Calef F., Clegg, S. M., Cousin, A., Dromart G., Dietrich, W. E., Edgett, K. S., Fisk, M. R., Gasnault, O., Gellert R., Grotzinger, J. P., Kah L., Le Mouélic,  S., McLennan, S. M., Maurice S., Meslin, P.-Y., Newsom, H. E., Palucis, M. C., Rapin, W., Sautter, V., Siebach, K. L., Stack K., Sumner D., Yingst, A., 2016, Chemistry of Conglomerates analyzed by Curiosity at Gale crater, Mars. International Geological Congress, August 2016.
100. Williams, A.J., Sumner, D.Y., Eigenbrode, J.L., Wilhelm, M.B., Cook, C.*, Mahaffy, P.R., 2016, Physical and Molecular Biosignature Preservation in Hydrous Ferric Oxides: Implications for Detection on Mars with MSL and Future Missions.  [Abstract] Biosignature Preservation and Detection in Mars Analog Environments. May 2016.
101. Wilhelm, M.B., Davila, A.F., Eigenbrode, J.L., Parenteau, M.N., Jahnke, L.L., Liu, X., Summons, R.E., Stamos, B.N., Wray, J.J., O’Reilly, S.S., Williams, A.J., 2016, Xeropreservation  of Functionalized  Lipid Biomarkers in Hyperarid Soils in the Atacama Desert, Chile [Abstract] Biosignature Preservation and Detection in Mars Analog Environments. May 2016.
102. Newsom, H.E, Belgacem, I., Jackson, R., Ha, B., Vaci, Z., Wiens, R.C., Frydenvang, J., Gasda, P., Lanza, N., Clegg, S., Gasnault, O., Maurice, S., Cousin, A., Rapin, W., Banham, S., Gupta, S., Williams, A.J., Grotzinger, J., Blaney, D., Schroeder, J., Calef, F., Francis, R., Ehlmann, B., Yen, A., Rubin, D., Bridges, N., Johnson, J., Lewis, K., Payré, V., Mangold, N., Edgett, K., Fey, D., Fisk, M., Gellert, R., Thompson, L., Schmidt, M., Perrett, G., Kah, L., Kronyak, R., Anderson, R., Herkenhoff, K., Bridges, J., 2016, Chemistry of the Materials Above and Below an Unconformity between the Murray and Stimson  Formations in Gale Crater, Mars. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2016.
103. Mangold, N., Thompson, L.M., Forni, O., Fabre, C., Le Deit, L., Wiens, R.C., Williams, A.J. Williams, R., Anderson, R.B., Blaney, D.L., Calef, F., Cousin, A., Clegg, S.M., Dromart, G., Dietrich, W.E., Edgett, K.S., Fisk, M.R., Gasnault, O., Gellert, R., Grotzinger, J.P., Kah, L., Le Mouélic, S., McLennan, S.M., Maurice, S., Meslin, P.-Y., Newsom, H.E., Palucis, M.C., Rapin, W., Sautter, V., Siebach, K.L., Stack, K., Sumner, D., Yingst, A., 2016, Chemistry of Conglomerates Analyzed by the Curiosity Rover. [Abstract] Lunar and Planetary Science Conference, The Woodlands, TX, March 2016.
104. Wilhelm, M.B., Davila, A., Eigenbrode, J., Parentrau, M., Jahnke, L., Summons, R., Liu, X., Wray, J., Stamos, B., O’Reilly, B., Williams, A.J., 2015, Preservation of lipid biomarkers under prolonged and extreme hyperaridity in Atacama Desert soils. [Abstract] American Geophysical Union Fall Meeting.
105. Williams, A.J., Eigenbrode, J., Floyd, M.M., Wilhelm, M.B., Freissinet, C., Sumner, D.Y., Mahaffy, P.R., 2015, Chemical Biosignature Preservation in the Iron Mountain Massive Sulfide Deposit: Implications for Biosignature Detection on Mars with the Curiosity Rover [Abstract] Geological Society of America Fall Meeting.
106. Stelling, P., Craft, K., Potter-McIntyre, S., Williams, A.J., 2015, Akutan Island, Alaska: A Sub-Glacial Hydrothermal System as a Terrestrial Analog for Habitable Environments on Mars, [Abstract] Astrobiology Science Conference, .
107. Wilhelm, M.B., Davila, A.F. Eigenbrode, J.E., Parenteau, M. N., Jahnke, L. L., Summons, R. E., Liu, X., Williams, A.J., Wray, J.J., 2015, Preservation of Lipid Biomarkers in the Atacama Desert, Chile, [Abstract] Astrobiology Science Conference, .
108. Williams, A.J., Eigenbrode, J., Floyd, M., McAdam^, A, Glavin, D., Mahaffy, P., 2015, Lipid Detection in Fe(III)-dominated Samples Using the Sample Analysis at Mars (SAM) Instrument Suite, [Abstract] Lunar and Planetary Science Conference, 1814.
109. Ha, B.M.*, Williams, A.J., Newsom, H., Rapin^, W., Gasnault^, O., Wiens, R.C., 2015, Grain Size Analysis with Simulation of Digital Images from Mars Science Laboratory testbed imagers, [Abstract] Lunar and Planetary Science Conference, 2201.
110. Schmidt, M. E., Mangold, N., Fisk, M., Forni O., McLennan S., Ming^, D.W., Sumner, D.Y, Sautter, V., Williams, A.J., Gellert, R., 2015. Classification Scheme for Diverse Igneous and Sedimentary Rocks Encountered by MSL in Gale Crater, [Abstract] Lunar and Planetary Science Conference, 1566.
111. Rosen-Gooding, A.L.*, Ollila, A. M., Gordon, S. R., Newsom, H. E., Williams, A. J., Martinez, R. K., Wiens, R. C., Clegg, S. M., 2014. Laser-Induced Breakdown Spectroscopy as a Tool to Differentiate Compositions of Iron-Bearing Minerals, [Abstract] Eighth International Conference on Mars, 1174.
112. Williams, Amy J., Williams, J.M.*, Anderson, R., Edgar, L., Newsom, H., Le Mouélic, S., 2014. Determining Grain Characteristics in the Shaler Outcrop with ChemCam Remote Micro-Imager Mosaics: Possibilities and Limitations, [Abstract] Lunar and Planetary Science Conference, 2342.
113. Williams, Amy J., Sumner, D.Y., Alpers, C.N., Campbell, K.M., Nordstrom, D.K., 2014. Biogenicity of Hydrous Ferric Oxide Mineralized Microbial Filaments and Implications for Detection with the Mars Curiosity Rover, [Abstract] Lunar and Planetary Science Conference, 2589.
114. Anderson, R.B., L. Edgar, J.C. Bridges, A.J. Williams, J. Williams*, A. Ollila, O. Forni, N. Mangold, N. Lanza, V. Sautter, S. Gupta, D. Blaney, B. Clark, S. Clegg, G. Dromart, O. Gasnault, J. Lasue, S. Le Mouélic, R. Leveille, E. Lewin, K. Lewis, S. Maurice, M. Nachon, H. Newsom, D. Vaniman, R.C. Wiens, 2014. ChemCam Results from the Shaler Outcrop in Gale Crater, Mars, [Abstract] Lunar and Planetary Science Conference, 2380.
115. Edgar, L.A., S. Gupta, D. M. Rubin, K.W. Lewis, G.A. Kocurek, R.B. Anderson, J.F. Bell III, G. Dromart, K.S. Edgett, J.P. Grotzinger, C. Hardgrove, L.C. Kah, R. Leveille, M.C. Malin, N. Mangold, R.E. Milliken, M. Minitti, M. Palucis, M. Rice, S.K. Rowland, J. Schieber, K.M. Stack, D.Y. Sumner, A.J. Williams, J. Williams*, R.M.E. Williams, 2014. A Fluvial Sandbody on Mars: Reconstruction of the Shaler Outcrop, Gale Crater, Mars, [Abstract] Lunar and Planetary Science Conference, 1648.
116. Williams, Amy J., Phan, A.T.*, Sumner, Dawn Y, Alpers, C.N., Campbell, K.M., Nordstrom, D.K., 2013. Filamentous biosignature preservation in the Iron Mountain massive sulfide deposit: Implications for biosignature detection on Mars, Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p.573.
117. Phan, A.T.*, Williams, A.J., Sumner, D.Y., 2013. Exploring microbial preservation in iron oxides with computed tomography and scanning electron microscopy, Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p.590.
118. Campbell, K.M., Alpers, C.N., Nordstrom, D.K., Blum, A, Williams, A.J., 2013. Biogeochemical processes involved in formation of schwertmannite-rich scale in a pipeline carrying acid mine drainage at Iron Mountain Mine, California, Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p.287.
119. Campbell, K.M, Alpers, C. Nordstrom, D.K., Blum, A., Williams, A., 2013. Characterization and Remediation of Iron(III) Oxide-rich Scale in a Pipeline Carrying Acid Mine Drainage at Iron Mountain Mine, California, USA, 2013 International Mine Water Association Symposium.
120. Williams, A.J., and Sumner, D.Y., 2013. ­­Development and Preservation of Filamentous Mineral Biosignatures: Implications for Detection with the Mars Science Laboratory, [Abstract] Lunar and Planetary Science Conference 44: 1741.
121. Williams, A.J., Phan, A.T.*, Sumner, D.Y., 2012. The Role of Microbes in Gossan Mineral Texture Formation, Geological Society of America Abstracts with Programs, Vol. 44, No. 7, p.74.
122. Williams, A.J., and Sumner, D.Y., 2012. Biogenic Cylindrical Filament Formation as Mineralogic Biosignatures, Iron Mountain, CA, Astrobiology Science Conference: 2226.
123. Williams, A.J., and Sumner, D.Y., 2012. The Development and Preservation of Filamentous Fabrics as Mineralogic Biosignatures, Iron Mountain, California, [Abstract] Lunar and Planetary Science Conference 43: 2337.
124. Williams, A.J., Borrelli, C., Chen, X.H., Srain, B.M., Hanselmann, K., Berelson, W., Caporaso, J.G., Coleman, M., Corsetti, F.A., Dawson, S., Johnson, H., Petryshyn, V., Sessions, A.L., Shapiro, R., Spear, J.R., Stevenson, B.S., Williamson, C.H.D., 2011 International Geobiology Course, 2011. Microbial survival in strongly lithifying hotspring environments, Yellowstone National Park. EOS Trans. AGU, Fall Meet. Suppl., Abstract B51I-0510.
125. Williams, A.J., Hirst, M., Sumner, D.Y., 2011. Geobiology of Acid-Saline Systems: Evaluating Mars Analogous Biosignatures. [Abstract] Astrobiology.  11(4):377.
126. Williams, A.J. 2011. ‘Houston, We Have a Process!’ Assessing Undergraduate Understanding of the Process of Science with an Active Mission to Mars – A Case Study from the UCD Freshman Seminar Series, UC Davis Interdisciplinary Graduate and Professional Symposium 2011 Meeting, p.29.
127. Williams, A.J., and Sumner, D.Y., 2011. Geobiology of Acid-Saline Systems: Implications for the Development and Preservation of Mineralogic Biosignatures on Mars, [Abstract] Lunar and Planetary Science Conference 42: 2125.
128. Williams, A.J., Sumner, D.Y., and Zierenberg, R.E., 2010. Acid Saline Weathering of a Massive Sulfide and Gossan Formation: Implications for Development and Preservation of Biosignatures on Mars, EOS Trans. AGU, Fall Meet. Suppl., Abstract EP21A-0739.
129. Nevarez, A.*, Labrado, A.*, Williams, A.J., Crossey, L.J., Karlstrom, K.E., 2010. A Four-Year Comparative Study of the Geochemistry and Hydrology of Select Springs in the Sevilleta National Wildlife Refuge, Geological Society of America Abstracts with Programs, v. 42, no. 5, p.285.
130. Reyes, F.*, Adelberg, S.*, Williams, A.J., Crossey, L.J., Karlstrom, K.E., 2010. A Salinization Study within the San Acacia Region, Sevilleta National Wildlife Refuge, New Mexico, New Mexico Geological Society 2010 Spring Meeting, p.41.
131. Apodaca, T.*, Williams, A.J., Crossey, L.J., Collins, S., 2009, ‘Water’ We Looking For? Using Water Quality Techniques in a GK-12 Classroom to Study Rio Grande Salinization and Explore the Scientific Method, Geological Society of America Abstracts with Programs, v. 41, no.7, p.489.
132. Reyes, F.*, Adelberg, S.*, Williams, A.J., Crossey, L.J., Karlstrom, K.E., 2009. A Salinization Study within the San Acacia Region, Sevilleta National Wildlife Refuge, New Mexico, Geological Society of America Abstracts with Programs, v. 41, no.7, p.665.
133. Adelberg, S.*, Reyes, F.*, Williams, A.J., Crossey, L.J., 2009. Geomicrobiology of the Sevilleta National Wildlife Refuge Springs and Wells: Predicting the Metabolic Energy Available to Microorganisms, Geological Society of America Abstracts with Programs, v. 41, no.7, p.665.
134. Williams, A.J., Crossey, L.J., Karlstrom, K.E., 2009. An Integrated Geochemical and Structural Study of the Sevilleta National Wildlife Refuge: Geochemistry and Salinity Sources of Waters Spanning the Rio Grande Rift, New Mexico, Geological Society of America Abstracts with Programs, v. 41, no.7, p.413.
135. Williams, A.J., Reyes, F.*, Adelberg, S.*, Crossey, L.J., Karlstrom, K.E., 2009. An Aqueous Geochemical and Hydrologic Study of the Springs and Wells of the Sevilleta National Wildlife Refuge: Evaluating Salinity Contributions, New Mexico Water Resources Research Institute Water Research Symposium.
136. Williams, A.J., Crossey, L.J., Karlstrom, K.E., Asmerom, Y., 2009. Aqueous Geochemistry of the Springs and Wells of the Sevilleta National Wildlife Refuge: Utilizing Natural Tracers to Identify Hydrochemical Flowpaths, New Mexico Geology, v.31 (2), p.52.
137. Williams, A.J., Waters, C.A.*, Crossey, L.J., Mehdi-Ali, A., 2008.  An Aqueous Geochemical and Hydrologic Study of the Springs and Wells of the Sevilleta National Wildlife Refuge, EOS Trans. AGU, 89 (53), Fall Meet. Suppl., Abstract H33F-1080.
138. Williams, A.J., Crossey, L.J., and Karlstrom, K.E., 2008. Aqueous Geochemistry of the Springs and Wells of the Sevilleta National Wildlife Refuge: Evaluating Hydrologic Pathways and Microbiology, New Mexico Geology, v.30 (2), p.64.
139. Williams, A.J., Andersen, C.B., Lewis, G.P., 2006. An evaluation of the effect of sample processing treatments on alkalinity measurements of river waters in a karstic region, Annual Meeting of the Geological Society of America, Abstracts with Programs, v. 38, p. 223.

Mars Curiosity Rover Science Team Journal Articles

14) Farley, K.A., Malespin, C., Mahaffy, P., Grotzinger, J.P., Vasconcelos, P.M., Milliken, R.E., Malin, M., Edgett, K.S., Pavlov, A.A., Hurowitz, J.A., Grant, J.A., Miller, H.B., Arvidson, R., Beegle, L., Calef, F., Conrad, P.G., Dietrich, W.E., Eigenbrode, J., Gellert, R., Gupta, S., Hamilton, V., Hassler, D.M., Lewis, K.W., McLennan, S.M., Ming, D., Navarro-González, R., Schwenzer, S.P., Steele, A., Stolper, E.M., Sumner, D.Y., Vaniman, D., Vasavada, A., Williford, K., Wimmer-Schweingruber, R.F., the MSL Science Team (including Williams, A.J.), 2014. In Situ Radiometric and Exposure Age Dating of the Martian Surface. Science (80). 343.      Link to Article

13) McLennan, S.M., Anderson, R.B., Bell, J.F., Bridges, J.C., Calef, F., Campbell, J.L., Clark, B.C., Clegg, S., Conrad, P., Cousin, A., Des Marais, D.J., Dromart, G., Dyar, M.D., Edgar, L.A., Ehlmann, B.L., Fabre, C., Forni, O., Gasnault, O., Gellert, R., Gordon, S., Grant, J.A., Grotzinger, J.P., Gupta, S., Herkenhoff, K.E., Hurowitz, J.A., King, P.L., Le Mouelic, S., Leshin, L.A., Leveille, R., Lewis, K.W., Mangold, N., Maurice, S., Ming, D.W., Morris, R. V., Nachon, M., Newsom, H.E., Ollila, A.M., Perrett, G.M., Rice, M.S., Schmidt, M.E., Schwenzer, S.P., Stack, K., Stolper, E.M., Sumner, D.Y., Treiman, A.H., VanBommel, S., Vaniman, D.T., Vasavada, A., Wiens, R.C., Yingst, R.A., the MSL Science Team  (including Williams, A.J.), 2014. Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars. Science (80). 343, 1244734–1244734. doi:10.1126/science.1244734.            Link to Article

12) Ming, D.W., Archer, P.D., Glavin, D.P., Eigenbrode, J.L., Franz, H.B., Sutter, B., Brunner, A.E., Stern, J.C., Freissinet, C., McAdam, A.C., Mahaffy, P.R., Cabane, M., Coll, P., Campbell, J.L., Atreya, S.K., Niles, P.B., Bell, J.F., Bish, D.L., Brinckerhoff, W.B., Buch, A., Conrad, P.G., Des Marais, D.J., Ehlmann, B.L., Fairén, A.G., Farley, K., Flesch, G.J., Francois, P., Gellert, R., Grant, J.A., Grotzinger, J.P., Gupta, S., Herkenhoff, K.E., Hurowitz, J.A., Leshin, L.A., Lewis, K.W., McLennan, S.M., Miller, K.E., Moersch, J., Morris, R. V, Navarro-González, R., Pavlov, A.A., Perrett, G.M., Pradler, I., Squyres, S.W., Summons, R.E., Steele, A., Stolper, E.M., Sumner, D.Y., Szopa, C., Teinturier, S., Trainer, M.G., Treiman, A.H., Vaniman, D.T., Vasavada, A.R., Webster, C.R., Wray, J.J., Yingst, R.A., the MSL Science Team  (including Williams, A.J.),  2014. Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars. Science (80). 343.             Link to Article

11) Grotzinger, J.P., Sumner, D.Y., Kah, L.C., Stack, K., Gupta, S., Edgar, L., Rubin, D., Lewis, K., Schieber, J., Mangold, N., Milliken, R., Conrad, P.G., DesMarais, D., Farmer, J., Siebach, K., Calef, F., Hurowitz, J., McLennan, S.M., Ming, D., Vaniman, D., Crisp, J., Vasavada, A., Edgett, K.S., Malin, M., Blake, D., Gellert, R., Mahaffy, P., Wiens, R.C., Maurice, S., Grant, J.A., Wilson, S., Anderson, R.C., Beegle, L., Arvidson, R., Hallet, B., Sletten, R.S., Rice, M., Bell, J., Griffes, J., Ehlmann, B., Anderson, R.B., Bristow, T.F., Dietrich, W.E., Dromart, G., Eigenbrode, J., Fraeman, A., Hardgrove, C., Herkenhoff, K., Jandura, L., Kocurek, G., Lee, S., Leshin, L.A., Leveille, R., Limonadi, D., Maki, J., McCloskey, S., Meyer, M., Minitti, M., Newsom, H., Oehler, D., Okon, A., Palucis, M., Parker, T., Rowland, S., Schmidt, M., Squyres, S., Steele, A., Stolper, E., Summons, R., Treiman, A., Williams, R., Yingst, A., the MSL Science Team  (including Williams, A.J.), 2014. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science (80). 343.       Link to Article

10) Hassler, D.M., Zeitlin, C., Wimmer-Schweingruber, R.F., Ehresmann, B., Rafkin, S., Eigenbrode, J.L., Brinza, D.E., Weigle, G., Böttcher, S., Böhm, E., Burmeister, S., Guo, J., Köhler, J., Martin, C., Reitz, G., Cucinotta, F.A., Kim, M.-H., Grinspoon, D., Bullock, M.A., Posner, A., Gómez-Elvira, J., Vasavada, A., Grotzinger, J.P., the MSL Science Team (including Williams, A.J.), 2014. Mars’ Surface Radiation Environment Measured with the Mars Science Laboratory’s Curiosity Rover. Science (80). 343.                     Link to Article

9) Vaniman, D.T., Bish, D.L., Ming, D.W., Bristow, T.F., Morris, R. V, Blake, D.F., Chipera, S.J., Morrison, S.M., Treiman, A.H., Rampe, E.B., Rice, M., Achilles, C.N., Grotzinger, J., McLennan, S.M., Williams, J., Bell, J., Newsom, H., Downs, R.T., Maurice, S., Sarrazin, P., Yen, A.S., Morookian, J.M., Farmer, J.D., Stack, K., Milliken, R.E., Ehlmann, B., Sumner, D.Y., Berger, G., Crisp, J.A., Hurowitz, J.A., Anderson, R., Desmarais, D., Stolper, E.M., Edgett, K.S., Gupta, S., Spanovich, N., the MSL Science Team (including Williams, A.J.), 2013. Mineralogy of a Mudstone at Yellowknife Bay, Gale Crater, Mars. Science 343, 1243480. doi:10.1126/science.1243480.               Link to Article

8) Stolper, E.M., Baker, M.B., Newcombe, M.E., Schmidt, M.E., Treiman, A.H., Cousin, A., Dyar, M.D., Fisk, M.R., Gellert, R., King, P.L., Leshin, L., Maurice, S., McLennan, S.M., Minitti, M.E., Perrett, G., Rowland, S., Sautter, V., Wiens, R.C., the MSL Science Team (including Williams, A.J.), 2013. The Petrochemistry of Jake_M: A Martian Mugearite. Science (80). 341.                   Link to Article

7) Meslin, P.-Y., Gasnault, O., Forni, O., Schröder, S., Cousin, A., Berger, G., Clegg, S.M., Lasue, J., Maurice, S., Sautter, V., Le Mouélic, S., Wiens, R.C., Fabre, C., Goetz, W., Bish, D., Mangold, N., Ehlmann, B., Lanza, N., Harri, A.-M., Anderson, R., Rampe, E., McConnochie, T.H., Pinet, P., Blaney, D., Léveillé, R., Archer, D., Barraclough, B., Bender, S., Blake, D., Blank, J.G., Bridges, N., Clark, B.C., DeFlores, L., Delapp, D., Dromart, G., Dyar, M.D., Fisk, M., Gondet, B., Grotzinger, J., Herkenhoff, K., Johnson, J., Lacour, J.-L., Langevin, Y., Leshin, L., Lewin, E., Madsen, M.B., Melikechi, N., Mezzacappa, A., Mischna, M.A., Moores, J.E., Newsom, H., Ollila, A., Perez, R., Renno, N., Sirven, J.-B., Tokar, R., de la Torre, M., d’Uston, L., Vaniman, D., Yingst, A., the MSL Science Team (including Williams, A.J.), 2013. Soil Diversity and Hydration as Observed by ChemCam at Gale Crater, Mars. Science (80). 341.        Link to Article

6) Bish, D.L., Blake, D.F., Vaniman, D.T., Chipera, S.J., Morris, R. V, Ming, D.W., Treiman, A.H., Sarrazin, P., Morrison, S.M., Downs, R.T., Achilles, C.N., Yen, A.S., Bristow, T.F., Crisp, J.A., Morookian, J.M., Farmer, J.D., Rampe, E.B., Stolper, E.M., Spanovich, N., the MSL Science Team (including Williams, A.J.), 2013. X-ray Diffraction Results from Mars Science Laboratory: Mineralogy of Rocknest at Gale Crater. Science (80). 341.                 Link to Article

5) Blake, D.F., Morris, R. V, Kocurek, G., Morrison, S.M., Downs, R.T., Bish, D., Ming, D.W., Edgett, K.S., Rubin, D., Goetz, W., Madsen, M.B., Sullivan, R., Gellert, R., Campbell, I., Treiman, A.H., McLennan, S.M., Yen, A.S., Grotzinger, J., Vaniman, D.T., Chipera, S.J., Achilles, C.N., Rampe, E.B., Sumner, D., Meslin, P.-Y., Maurice, S., Forni, O., Gasnault, O., Fisk, M., Schmidt, M., Mahaffy, P., Leshin, L.A., Glavin, D., Steele, A., Freissinet, C., Navarro-González, R., Yingst, R.A., Kah, L.C., Bridges, N., Lewis, K.W., Bristow, T.F., Farmer, J.D., Crisp, J.A., Stolper, E.M., Des Marais, D.J., Sarrazin, P., the MSL Science Team (including Williams, A.J.), 2013. Curiosity at Gale Crater, Mars: Characterization and Analysis of the Rocknest Sand Shadow. Science (80). 341.     Link to Article

4) Leshin, L.A., Mahaffy, P.R., Webster, C.R., Cabane, M., Coll, P., Conrad, P.G., Archer, P.D., Atreya, S.K., Brunner, A.E., Buch, A., Eigenbrode, J.L., Flesch, G.J., Franz, H.B., Freissinet, C., Glavin, D.P., McAdam, A.C., Miller, K.E., Ming, D.W., Morris, R. V, Navarro-González, R., Niles, P.B., Owen, T., Pepin, R.O., Squyres, S., Steele, A., Stern, J.C., Summons, R.E., Sumner, D.Y., Sutter, B., Szopa, C., Teinturier, S., Trainer, M.G., Wray, J.J., Grotzinger, J.P., the MSL Science Team (including Williams, A.J.), 2013. Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover. Science (80). 341.                             Link to Article

3) Webster, C.R., Mahaffy, P.R., Atreya, S.K., Flesch, G.J., Farley, K.A., the MSL Science Team (including Williams, A.J.), 2013. Low Upper Limit to Methane Abundance on Mars. Science (80). 342.   Link to Article

2) Mahaffy, P.R., Webster, C.R., Atreya, S.K., Franz, H., Wong, M., Conrad, P.G., Harpold, D., Jones, J.J., Leshin, L.A., Manning, H., Owen, T., Pepin, R.O., Squyres, S., Trainer, M., the MSL Science Team (including Williams, A.J.), 2013. Abundance and Isotopic Composition of Gases in the Martian Atmosphere from the Curiosity Rover. Science (80). 341.  Link to Article

1) Williams, R.M.E., Grotzinger, J.P., Dietrich, W.E., Gupta, S., Sumner, D.Y., Wiens, R.C., Mangold, N., Malin, M.C., Edgett, K.S., Maurice, S., Forni, O., Gasnault, O., Ollila, A., Newsom, H.E., Dromart, G., Palucis, M.C., Yingst, R.A., Anderson, R.B., Herkenhoff, K.E., Mouélic, S. Le, Goetz, W., Madsen, M.B., Koefoed, A., Jensen, J.K., Bridges, J.C., Schwenzer, S.P., Lewis, K.W., Stack, K.M., Rubin, D., Kah, L.C., III, J.F.B., Farmer, J.D., Sullivan, R., Beek, T. Van, Blaney, D.L., Pariser, O., Deen, R.G., the MSL Science Team (including Williams, A.J.), 2013. Martian Fluvial Conglomerates at Gale Crater. Science (80). 291, 1068–1072.          Link to Article