Dr. John A. Grant, III, joined the Smithsonian in the fall of 2000 as a Geologist at the Center for Earth and Planetary Studies at the National Air and Space Museum.  He is on the science teams for the Mars Science Laboratory, Curiosity, and the InSight lander missions. Curiosity and InSight landed on Mars in August 2012 and November 2018, respectively. He serves as a Long Term Planner responsible for shaping strategic decisions about Curiosity activities and is a member of the Geology Group on InSight. He was also a member of the Science Team for the Mars Exploration Rovers. Starting in 2002 and until the mission ended in 2019, he served as a Science Operations Working Group Chairs responsible for leading science planning on the rovers.  Dr. Grant is also a co-investigator on the HiRISE camera flying on the Mars Reconnaissance Orbiter spacecraft. He co-chaired the science community process for selecting the landing sites for the Spirit and Opportunity Rovers the Curiosity rover, and the Mars 2020 Perseverance rover.  

Currently, he is working day-to-day operations on the Curiosity rover, studying the surface evolution around the InSight lander, and targeting the HiRISE camera on board the Mars Reconnaissance Orbiter to understand landscape evolution and image and map possible future landing sites on the Red Planet.  He is also developing a ground-penetrating radar instrument for possible future deployment on a Mars or Moon rover. He has been interested in Mars ever since reading Ray Bradbury’s The Martian Chronicles as a child.

Dr. Grant attended the State University of New York College at Plattsburgh and received his bachelor’s degree, magna cum laude, in geology in 1982 and went on to earn a master’s and doctorate in geology at the University of Rhode Island (1986) and Brown University (1990), respectively.  His dissertation focused on the degradation of meteorite impact craters on Earth and Mars and remains interested in understanding processes responsible for shaping planetary landscapes. 

After a two-year position at NASA Headquarters, where he served as Program Scientist for the Mars Global Surveyor and postponed Sample Return missions, Dr. Grant then accepted his current position at the Smithsonian Institution.  He is currently a Senior Geologist in the Center for Earth and Planetary Studies at the National Air and Space Museum.

Dr. Grant also maintains a strong connection to the classroom and began as a lecturer at BrownUniversity in 1990.  Since then he has held several professorial posts at both Rhode Island College and SUNY College at Buffalo (New York), where he was an Associate Professor.  He has authored or contributed to numerous articles in many industry publications, including Geology, Geophysical Research Letters, Geomorphology and Science magazine. He is a Fellow of the Geological Society of America and was awarded the G. K. Gilbert award by the Society in 2017 “for outstanding contributions to the solution of fundamental problems in planetary geology in the broadest sense”.

Dr. Grant’s other interests include gardening, biking, ice hockey, and collecting beer.

Funded Grants/Contracts Managed in FY2020:

Title:            "Constraining the Geology and Near Surface Properties of the InSight Landing Site"

Agency:        NASA Discovery Program, InSight Participating Scientist Program/Bobby Fogel,

                          Robert.A.Fogel@nasa.gov., (202) 358-2289

Period:          8/30/2018-8/29/22

Months:        2.0

Title:            "Defining the Geologic History and Record of Potentially Habitable Environments in
                     Gale Crater"

Agency:        NASA PSD/JPL, Jeff Simmonds, john.j.simmonds@jpl.nasa.gov 

Period:          4/1/16-9/30/21

Months:        3.0

Title:            "High Resolution Imaging Science Experiment (HiRISE) for Mars" (Alfred

                     McEwen is PI, John Grant is Co-I)

Agency:        NASA Mars Exploration Program/University of Arizona, Michael S. Kelley,

                          Michael.S.Kelley@nasa.gov, (202) 358-0607

Period:          11/1/01-9/30/21

Months:        2.0

Title:            "In Situ Ceochronology for the Next Decade"  (Barbara Cohen PI, Grant Co-I)

Agency:        NASA Planetary Mission Concept Studies, Contact: TBD

Period:          11/1/2020-5/31/20

Months:        0.05

Title:            "Fresh Shallow Valleys and Pollywog Craters: Insight into Post-Noachian Fluvial 
                     Activity on Mars" (Sharon Purdy PI,   Grant Collaborator)

Agency:        NASA MDAP, Contact: Mitchell Schulte, mitchell.d.schulte@nasa.gov, (202

                      358-0780

Period:          11/1/2020-10/31/23

Months:        0.05

Title:            "Preparing a Geologic Map in Margaritifer Terra: A Community Resource to 

                     Facilitate Future Scientific Investigations on Mars" (Sharon Purdy PI, Grant Co-I)

Agency:        NASA PDART Program

Period:          7/1/2020-6/30/23

Months:        0.05

Title:             "Investigation of Sedimentary and Altered Deposits in and around Ladon Basin"
                     (Catherine Weitz is PI,  John Grant is Co-I)

 Agency:          NASA MDAP, Contact: Mitchell Schulte, mitchell.d.schulte@nasa.gov, (202

                         358-0780

Period:          6/01/2017-5/31/2020

Grants/Contracts Submitted in FY20 and Pending Review:

Title:             "Defining the Geologic History and Three-Dimensional Distribution of High-Potential
                     Astrobiological Settings in Jezero Crater"

Agency:        NASA Planetary Mission Concept Studies, Contact: Mitchell Schulte, 
                           mitchell.d.schulte@nasa.gov, (202-358-0780)

Period:          7/1/2020-9/30/23

Months:        3.0-2.4

Article

• Grant, J. A., Manogaran, R., and Wilson, Sharon A. 2024. "Late drainage along portions of Samara Valles, West of Jones Crater, Margaritifer Terra, Mars." Icarus, 419 1–62. https://doi.org/10.1016/j.icarus.2024.115975. 2024
• Grant, John A., Wilson, S. A., Golombek, M. P., Trussell, A., Warner, N. H., Williams, N., Weitz, C. M., Abarca, H., and Deen, R. 2022. "Degradation at the InSight Landing Site, Homestead Hollow , Mars: Constraints From Rock Heights and Shapes." Earth and Space Science, 9, (2). https://doi.org/10.1029/2021EA001953. 2022
• Warner, N. H., Golombek, M. P., Ansan, V., Marteau, E., Williams, N., Grant, John A., Hauber, E., Weitz, C., Wilson, Sharon A., Piqueux, S., Mueller, N., Grott, M., Spohn, T., Pan, L., Schmelzbach, C., Daubar, I. J., Garvin, J., Charalambous, C., Baker, Mariah, and Banks, M. 2022. "In Situ and Orbital Stratigraphic Characterization of the InSight Landing Site-A Type Example of a Regolith-Covered Lava Plain on Mars." Journal of Geophysical Research-Planets, 127, (4). https://doi.org/10.1029/2022JE007232. 2022
• Weitz, Catherine M., Lewis, Kevin W., Bishop, Janice L., Thomson, Bradley J., Arvidson, Raymond E., Grant, John A., Seelos, Kimberly D., and Ettenborough, Ivy. 2022. "Orbital Observations of a Marker Horizon at Gale Crater." Journal of Geophysical Research-Planets, 127, (4). https://doi.org/10.1029/2022JE007211. 2022
• Weitz, Catherine M., O'Connell-Cooper, Catherine, Thompson, Lucy, Sullivan, Robert J., Baker, Mariah, and Grant, John A. 2022. "The Physical Properties and Geochemistry of Grains on Aeolian Bedforms at Gale Crater, Mars." Journal of Geophysical Research-Planets, 127, (11). https://doi.org/10.1029/2021JE007061. 2022
• Mittlefehldt, David W., Gellert, Ralf, vanBommel, Scott, Arvidson, Raymond E., Ashley, James W., Clark, Benton C., Crumpler, Larry S., Farrand, William H., Golombek, Matthew P., Grant, John A., Morris, Richard, V., and Schroder, Christian. 2021. "Geology and Geochemistry of Noachian Bedrock and Alteration Events, Meridiani Planum, Mars: MER Opportunity Observations." Journal of Geophysical Research. E. Planets, 126, (9). https://doi.org/10.1029/2021JE006915. 2021
• Golombek, Matthew P., Trussell, Allyson R., Williams, Nathan Robert, Charalambous, Constantinos, Abarca, Hallie, Warner, Nicholas Hale, Deahn, Margaret, Trautman, Marshall R., Crocco, Bob, Grant, John A., Hauber, Ernst, and Deen, Robert G. 2021. "Rock Size-frequency Distributions of the InSight Landing Site, Mars." Earth and Space Science, 8, (12). https://doi.org/10.1002/essoar.10507665.2. 2021
• Piqueux, Sylvain, Müller, Nils, Grott, Matthias, Siegler, Matthew, Millour, Ehouarn, Forget, Francois, Lemmon, Mark, Golombek, Matthew, Williams, Nathan, Grant, John, Warner, Nicholas, Ansan, Veronique, Daubar, Ingrid, Knollenberg, J. örg, Maki, Justin, Spiga, Aymeric, Banfield, Don, Spohn, Tilman, Smrekar, Susan, and Banerdt, Bruce. 2021. "Soil Thermophysical Properties near the InSight Lander Derived from 50 Sols of Radiometer Measurements." Journal of Geophysical Research. E. Planets, https://doi.org/10.1029/2021JE006859. 2021
• Wilson, Sharon A., Morgan, Alexander M., Howard, Alan D., and Grant, John A. 2021. "The Global Distribution of Craters With Alluvial Fans and Deltas on Mars." Geophysical Research Letters, 48, (4). https://doi.org/10.1029/2020GL091653. 2021
• Baker, Mariah, Newman, C., Charalambous, C., Golombek, M., Spiga, A., Banfield, D., Lemmon, M., Banks, M., Lorenz, R., Garvin, J., Grant, John, Lewis, K., Ansan, V., Warner, N., Weitz, C., Wilson, Sharon A., and Rodriguez, S. 2021. "Vortex-Dominated Aeolian Activity at InSight's Landing Site, Part 2: Local Meteorology, Transport Dynamics, and Model Analysis." Journal of Geophysical Research. E. Planets, 126, (4). https://doi.org/10.1029/2020JE006514. 2021
• Weitz, Catherine M., Grant, John A., Golombek, Matthew P., Warner, Nicholas H., Hauber, Ernst, Ansan, Veronique, Wilson, Sharon A., Charalambous, Constantinos, Williams, Nathan, Calef, Fred, Pike, W. T., Lethcoe‐Wilson, Heather, Maki, Justin, DeMott, Alyssa, and Kopp, Megan. 2020. "Comparison of InSight Homestead Hollow to Hollows at the Spirit Landing Site." Journal of Geophysical Research. E. Planets, 125, (7). https://doi.org/10.1029/2020JE006435. 2020
• Warner, Nicholas H., Schuyler, Andrew J., Rogers, A. D., Golombek, Matthew P., Grant, John, Wilson, Sharon, Weitz, Cathy, Williams, Nathan, and Calef, Fred. 2020. "Crater Morphometry on the Mafic Floor Unit at Jezero Crater, Mars: Comparisons to a Known Basaltic Lava Plain at the InSight Landing Site." Geophysical Research Letters, 47, (17). https://doi.org/10.1029/2020GL089607. 2020
• Grant, John A., Warner, Nicholas H., Weitz, Catherine M., Golombek, Matthew P., Wilson, Sharon A., Baker, Mariah, Hauber, Ernst, Ansan, Veronique, Charalambous, Constantinos, Williams, Nathan, Calef, Fred, Pike, W. T., DeMott, Alyssa, Kopp, Megan, Lethcoe, Heather, and Banks, Maria E. 2020. "Degradation of Homestead Hollow at the Insight Landing Site Based on the Distribution and Properties of Local Deposits." Journal of Geophysical Research. E. Planets, 125, (4). https://doi.org/10.1029/2019JE006350. 2020
• Golombek, M., Warner, N. H., Grant, John A., Hauber, E., Ansan, V., Weitz, C. M., Williams, N., Charalambous, C., Wilson, Sharon A., DeMott, A., Kopp, M., Lethcoe-Wilson, H., Berger, L., Hausmann, R., Marteau, E., Vrettos, C., Trussell, A., Folkner, W., Le Maistre, S., Mueller, N., Grott, M., Spohn, T., Piqueux, S., Millour, E., Forget, F. et al. 2020. "Geology of the InSight landing site on Mars." Nature Communications, 11, (1) Article 1014. https://doi.org/10.1038/s41467-020-14679-1. 2020
• Banerdt, W. Bruce, Smrekar, Suzanne E., Banfield, Don, Giardini, Domenico, Golombek, Matthew, Johnson, Catherine L., Lognonne, Philippe, Spiga, Aymeric, Spohn, Tilman, Perrin, Clement, Staehler, Simon C., Antonangeli, Daniele, Asmar, Sami, Beghein, Caroline, Bowles, Neil, Bozdag, Ebru, Chi, Peter, Christensen, Ulrich, Clinton, John, Collins, Gareth S., Daubar, Ingrid, Dehant, Veronique, Drilleau, Melanie, Fillingim, Matthew, Folkner, William et al. 2020. "Initial results from the InSight mission on Mars." Nature Geoscience, (13) 183–189. https://doi.org/10.1038/s41561-020-0544-y. 2020
• Golombek, Matthew, Williams, Nathan, Warner, N. H., Parker, Timothy, Williams, M. G., Daubar, Ingrid, Calef, Fred, Grant, John, Bailey, P., Abarca, H., Deen, Robert, Ruoff, N., Maki, Justin, McEwen, Alfred, Baugh, Nicole, Block, Kristin, Tamppari, Leslie, Call, J., Ladewig, J., Stoltz, A., Weems, W. A., Mora‐Sotomayor, L., Torres, J., Johnson, M., Kennedy, T. et al. 2020. "Location and Setting of the Mars InSight Lander, Instruments and Landing Site." Earth and Space Science, 7, (10) Article e2020EA001248. https://doi.org/10.1029/2020EA001248. 2020
• Crumpler, L. S., Arvidson, R. E., Mittlefehldt, D. W., Grant, John A., and Farrand, W. H. 2020. "Results from the first geologic traverse on the topographic rim of a complex impact crater, Endeavour Crater, Mars." Geology, 48, (3) 252–257. https://doi.org/10.1130/G46903.1. 2020
• Hughes, M. N., Arvidson, R. E., Grant, J. A., Wilson, S. A., Howard, A. D., and Golombek, M. P. 2019. "Degradation of Endeavour Crater Based on Orbital and Rover-Based Observations in Combination With Landscape Evolution Modeling." Journal of Geophysical Research. E. Planets, 124, (6) 1472–1494. https://doi.org/10.1029/2019JE005949. 2019
• Grant, John A. and Wilson, Sharon A. 2019. "Evidence for Late Alluvial Activity in Gale Crater, Mars." Geophysical Research Letters, 46, (13) 7287–7294. https://doi.org/10.1029/2019GL083444. 2019
• Mittlefehldt, David W., Gellert, Ralf, Ming, Douglas W., Yen, Albert S., Clark, Benton C., Morris, Richard V., Schroder, Christian, Crumpler, Larry S., Grant, John A., Jolliff, Bradley L., Arvidson, Raymond E., Farrand, William H., Herkenhoff, Kenneth E., Bell, James F., III, Cohen, Barbara A., Klingelhoefer, Goestar, Schrader, Christian M., and Rice, James W. 2018. "Diverse Lithologies and Alteration Events on the Rim of Noachian-Aged Endeavour Crater, Meridiani Planum, Mars: In Situ Compositional Evidence." Journal of Geophysical Research. E. Planets, 123, (5) 1255–1306. https://doi.org/10.1002/2017JE005474. 2018
• Weitz, Catherine M., Sullivan, Robert J., Lapotre, Mathieu G. A., Rowland, Scott K., Grant, John A., Baker, Mariah, and Yingst, R. A. 2018. "Sand Grain Sizes and Shapes in Aeolian Bedforms at Gale Crater, Mars." Geophysical Research Letters, 45, (18) 9471–9479. https://doi.org/10.1029/2018GL078972. 2018
• Weitz, Catherine M., Sullivan, Robert J., Lapotre, Mathieu G. A., Rowland, Scott K., Grant, John A., Baker, Mariah, and Yingst, R. Aileen. 2018. "Sand Grain Sizes and Shapes in Eolian Bedforms at Gale Crater, Mars." Geophysical Research Letters, 45, (18) 9471–9479. https://doi.org/10.1029/2018GL078972. 2018
• Wilson, Sharon A., Grant, John A., Howard, Alan D., and Buczkowski, Deborah L. 2018. "The Nature and Origin of Deposits in Uzboi Vallis on Mars." Journal of Geophysical Research. E. Planets, 123, (7) 1842–1862. https://doi.org/10.1029/2017JE005508. 2018
• Grant, John A. and Wilson, Sharon A. 2018. "The nature and emplacement of distal aqueous-rich ejecta deposits from Hale crater, Mars." Meteoritics & Planetary Science, 53, (4) 839–856. https://doi.org/10.1111/maps.12843. 2018
• Grant, John A., Golombek, Matthew P., Wilson, Sharon A., Farley, Kenneth A., Williford, Ken H., and Chen, Al. 2018. "The science process for selecting the landing site for the 2020 Mars rover." Planetary and Space Science, 164 106–126. https://doi.org/10.1016/j.pss.2018.07.001. 2018
• Maxwell, Ted A., Haynes Jr., C. Vance, Nicoll, Kathleen, Johnston, Andrew K., Grant, John A., and Kilani, Ali. 2017. "Quaternary History of the Kiseiba Oasis Region, Southern Egypt." Journal of African Earth Sciences, 136 188–200. https://doi.org/10.1016/j.jafrearsci.2017.04.024. 2017
• Watters, Thomas R., Leuschen, Carl J., Campbell, Bruce A., Morgan, Gareth A., Cicchetti, Andrea, Grant, John A., Phillips, Roger J., and Plaut, Jeffrey J. 2017. "Radar sounder evidence of thick, porous sediments in Meridiani Planum and implications for ice-filled deposits on Mars." Geophysical Research Letters, 44, (18) 9208–9215. https://doi.org/10.1002/2017GL074431. 2017
• Hurowitz, J. A., Grotzinger, J. P., Fischer, W. W., McLennan, S. M., Milliken, R. E., Stein, N., Vasavada, A. R., Blake, D. F., Dehouck, E., Eigenbrode, J. L., Fairen, A. G., Frydenvang, J., Gellert, R., Grant, John A., Gupta, S., Herkenhoff, K. E., Ming, D. W., Rampe, E. B., Schmidt, M. E., Siebach, K. L., Stack-Morgan, K., Sumner, D. Y., and Wiens, R. C. 2017. "Redox stratification of an ancient lake in Gale crater, Mars." Science, 356, (6341) 922– . https://doi.org/10.1126/science.aah6849. 2017
• Wilson, Sharon A., Howard, Alan D., Moore, Jeffrey M., and Grant, John A. 2016. "A Cold-Wet Mid-Latitude Environment on Mars during the Hesperian-Amazonian Transition: Evidence from Northern Arabia Valleys and Paleolakes: A Late, Cold and Wet Climate on Mars." Journal of Geophysical Research. E. Planets, 121, (9) 1667–1694. https://doi.org/10.1002/2016JE005052. 2016
• Schroder, Christian, Bland, Phil A., Golombek, Matthew P., Ashley, James W., Warner, Nicholas H., and Grant, John A. 2016. "Amazonian Chemical Weathering Rate Derived from Stony Meteorite finds at Meridiani Planum on Mars." Nature Communications, 7 13459. https://doi.org/10.1038/ncomms13459. 2016
• Lapotre, M. G. A., Ewing, R. C., Lamb, M. P., Fischer, W. W., Grotzinger, J. P., Rubin, D. M., Lewis, K. W., Ballard, M. J., Day, M., Gupta, S., Banham, S. G., Bridges, N. T., Des Marais, D. J., Fraeman, A. A., Grant, John A., Herkenhoff, K. E., Ming, D. W., Mischna, M. A., Rice, M. S., Sumner, D. A., Vasavada, A. R., and Yingst, R. A. 2016. "Large wind ripples on Mars: A record of atmospheric evolution." Science, 353, (6294) 55–58. https://doi.org/10.1126/science.aaf3206. 2016
• Grant, John A., Parker, T. J., Crumpler, L. S., Wilson, Sharon A., Golombek, M. P., and Mittlefehldt, D. W. 2016. "The degradational history of Endeavour crater, Mars." Icarus, 280 22–36. https://doi.org/10.1016/j.icarus.2015.08.019. 2016
• Crumpler, L. S., Arvidson, R. E., Bell, J., Clark, B. C., Cohen, B. A., Farrand, W. H., Gellert, R., Golombek, M., Grant, John A., Guinness, E., and Herkenhoff, K. E. 2015. "Context of Ancient Aqueous Environments on Mars from In Situ Geologic Mapping at Endeavour Crater." Journal of Geophysical Research. E. Planets, 120, (3) 538–569. https://doi.org/10.1002/2014JE004699. 2015
• Grotzinger, J. P., Gupta, S., Malin, M. C., Rubin, D. M., Schieber, J., Siebach, K., Sumner, D. Y., Stack, K. M., Vasavada, A. R., Arvidson, R. E., Calef, F., Edgar, L., Fischer, W. F., Grant, John A., Griffes, J., Kah, L. C., Lamb, M. P., Lewis, K. W., Mangold, N., Minitti, M. E., Palucis, M., Rice, M. E., Williams, R. M. E., Yingst, R. A., Blake, D. et al. 2015. "Deposition, exhumation, and paleoclimate of an ancient lake deposit, Gale crater, Mars." Science, 350, (6257). https://doi.org/10.1126/science.aac7575. 2015
• Newsom, Horton E., Mangold, Nicolas, Kah, Linda C., Williams, Joshua M., Arvidson, Ray E., Stein, Nathan, Ollila, Ann M., Bridges, John C., Schwenzer, Susanne P., King, Penelope L., Grant, John A., Pinet, Patrick, Bridges, Nathan T., Calef, Fred, Wiens, Roger C., Spray, John G., Vaniman, David T., Elston, Wolf E., Berger, Jeff, Garvin, James B., and Palucis, Marisa C. 2015. "Gale crater and impact processes -Curiosity's first 364 Sols on Mars." Icarus, 249 108–128. https://doi.org/10.1016/j.icarus.2014.10.013. 2015
• Irwin, Rossman P., III, Lewis, Kevin W., Howard, Alan D., and Grant, John A. 2015. "Paleohydrology of Eberswalde Crater, Mars." Geomorphology, 240 83–101. https://doi.org/10.1016/j.geomorph.2014.10.012. 2015
• 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. et al. 2014. "A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars." Science, 343, (6169) 1242777. https://doi.org/10.1126/science.1242777. 2014
• McLennan, S. M., Anderson, R. B., Bell, J. F., III, Bridges, J. C., Calef, F., III, 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, John A., Grotzinger, J. P., Gupta, S., Herkenhoff, K. E., Hurowitz, J. A. et al. 2014. "Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars." Science, 343, (6169) Article 1244734. https://doi.org/10.1126/science.1244734. 2014
• 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, JA, Grant, John 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. et al. 2014. "In Situ Radiometric and Exposure Age Dating of the Martian Surface." Science, 343, (6169). https://doi.org/10.1126/science.1247166. 2014
• Morgan, A. M., Howard, A. D., Hobley, D. E. J., Moore, J. M., Dietrich, W. E., Williams, R. M. E., Burr, D. M., Grant, John A., Wilson, Sharon A., and Matsubara, Yo. 2014. "Sedimentology and climatic environment of alluvial fans in the Martian Saheki crater and a comparison with terrestrial fans in the Atacama Desert." Icarus, 229 131–156. https://doi.org/10.1016/j.icarus.2013.11.007. 2014
• Arvidson, R. E., Bellutta, P., Calef, F., Fraeman, A. A., Garvin, J., Gasnault, O., Grant, John A., Grotzinger, J., Hamilton, V., Heverly, M., Iagnemma, K. A., Johnson, J. R., Lanza, N., Le Mouelic, S., Mangold, N., Ming, D. W., Mehta, M., Morris, R. V., Newsom, H. E., Renno, N., Rubin, D., Schieber, J., Sletten, R., Stein, N. T., Thuillier, F. et al. 2014. "Terrain Physical Properties Derived From Orbital Data and the First 360 Sols of Mars Science Laboratory Curiosity Rover Observations in Gale Crater." Journal of Geophysical Research. E. Planets, 119, (6) 1322–1344. https://doi.org/10.1002/2013JE004605. 2014
• Grant, John A., Wilson, Sharon A., Mangold, Nicolas, Calef III, Fred, and Grotzinger, John P. 2014. "The Timing of Alluvial Activity in Gale Crater, Mars." Geophysical Research Letters, 41, (4) 1142–1149. https://doi.org/10.1002/2013GL058909. 2014
• Ming, D. W., Archer,P. D., Jr., 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., III, Bish, D. L., Brinckerhoff, W. B., Buch, A., Conrad, P. G., Des Marais, D. J., Ehlmann, B. L., Fairen, A. G., Farley, K. et al. 2014. "Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars." Science, 343, (6169). https://doi.org/10.1126/science.1245267. 2014
• Russell, Patrick S., Grant, John A., Williams, Kevin K., Carter, Lynn M., Garry, William Brent, and Dauber, I. J. 2013. "Ground penetrating radar geologic field studies of Barringer Meteorite Crater, Arizona, as a planetary analog." Journal of Geophysical Research. E. Planets, 118, (9) 1915–1933. https://doi.org/10.1002/jgre.20145. 2013
• Weitz, Catherine M., Bishop, Janice L., and Grant, John A. 2013. "Gypsum, Opal, and Fluvial Channels within a Trough of Noctis Labyrinthus, Mars: Implications for Aqueous Activity during the Late Hesperian to Amazonian." Planetary and Space Science, 87 130–145. 2013
• Grant, John A. and Wilson, Sharon A. 2012. "A possible synoptic source of water for alluvial fan formation in southern Margaritifer Terra, Mars." Planetary and Space Science, 72, (1) 44–52. https://doi.org/10.1016/j.pss.2012.05.020. 2012
• Squyres, S. W., Arvidson, R. E., Bell, J. F., Calef, F., Clark, B. C., Cohen, B. A., Crumpler, L. A., de Souza, P. A., Farrand, W. H., Gellert, R., Grant, John A., Herkenhoff, K. E., Hurowitz, J. A., Johnson, J. R., Jolliff, B. L., Knoll, A. H., Li, R., McLennan, S. M., Ming, D. W., Mittlefehldt, D. W., Parker, T. J., Paulsen, G., Rice, M. S., Ruff, S. W., Schröder, C. et al. 2012. "Ancient Impact and Aqueous Processes at Endeavour Crater, Mars." Science, 336, (6081) 570–576. https://doi.org/10.1126/science.1220476. 2012
• Golombek, M., Grant, John A., Kipp, D., Vasavada, A., Kirk, R., Fergason, R., Bellutta, P., Calef, F., Larsen, K., Katayama, Y., Huertas, A., Beyer, R., Chen, A., Parker, T., Pollard, B., Lee, S., Sun, Y., Hoover, R., Sladek, H., Grotzinger, J., Welch, R., Dobrea, E. Noe, Michalski, J., and Watkins, M. 2012. "Selection of the Mars Science Laboratory Landing Site." Space Science Review, 170, (1-4) 641–737. https://doi.org/10.1007/s11214-012-9916-y. 2012
• Tornabene, Livio L., Osinski, Gordon R., McEwen, Alfred S., Boyce, Joseph M., Bray, Veronica J., Caudill, Christy M., Grant, John A., Hamilton, Christopher W., Mattson, Sarah, and Mouginis-Mark, Peter. 2012. "Widespread crater-related pitted materials on Mars: further evidence for the role of target volatiles during the impact process." Icarus, 220, (2) 348–368. https://doi.org/10.1016/j.icarus.2012.05.022. 2012
• Grant, John A., Irwin, Rossman P., III, Wilson, Sharon A., Buczkowski, D., and Siebach, K. 2011. "A lake in Uzboi Vallis and implications for Late Noachian-Early Hesperian climate on Mars." Icarus, 212, (1) 110–122. https://doi.org/10.1016/j.icarus.2010.11.024. 2011
• Crumpler, L. S., Arvidson, R. E., Squyres, Steven W., McCoy, Timothy J., Yingst, A., Ruff, S., Farrand, W., McSween, Harry Y., Powell, M., Ming, D. W., Morris, R. V., Bell, J. F., III, Grant, John A., Greeley, Ronald, DesMarais, D., Schmidt, M., Cabrol, N. A., Haldemann, A., Lewis, K. W., Wang, A. E., Schroder, C., Blaney, D., Cohen, B., Yen, A., Farmer, J. et al. 2011. "Field Reconnaissance Geologic Mapping of the Columbia Hills, Mars Based on MER Spirit and MRO HiRISE Observations." Journal of Geophysical Research, 116 1–55. 2011
• Grant, John A. and Wilson, Sharon A. 2011. "Late alluvial fan formation in southern Margaritifer Terra, Mars." Geophysical Research Letters, 38 1–6. 2011
• Watters, Wesley A., Grotzinger, John P., Bell, James F., III, Grant, John A., Hayes, Alex G., Li, Rongxing, Squyres, Steven W., and Zuber, Maria T. 2011. "Origin of the structure and planform of small impact craters in fractured targets: Endurance Crater at Meridiani Planum, Mars." Icarus, 211, (1) 472–497. https://doi.org/10.1016/j.icarus.2010.08.030. 2011
• Grant, John A. and Leuschen, C. J. 2011. "The STRATA ground penetrating radar as a means for constraining the near surface properties of the Moon and Mars." Proceedings of the 2011 IEEE Radar Conference, 3399 1132–1134. 2011
• Grant, John A., Golombek, M. P., Grotzinger, J. P., Wilson, Sharon A., Watkins, M. M., Vasavada, A. R., Griffes, J. L., and Parker, T. J. 2011. "The science process for selecting the landing site for the 2011 Mars Science Laboratory." Planetary and Space Science, 59, (11-12) 1114–1127. https://doi.org/10.1016/j.pss.2010.06.016. 2011
• Grant, John A., Wilson, Sharon A., Dobrea, Eldar Noe, Fergason, Robin L., Griffes, Jennifer L., Moore, Jeffery M., and Howard, Alan D. 2010. "HiRISE Views Enigmatic Deposits in the Sirenum Fossae Region of Mars." Icarus, 205, (1) 53–63. https://doi.org/10.1016/j.icarus.2009.04.009. 2010
• Weitz, Catherine M., Milliken, R. E., Grant, John A., McEwen, A. S., Williams, R. M. E., Bishop, J. L., and Thomson, B. J. 2010. "Mars Reconnaissance Orbiter observations of light-toned layered deposits and associated fluvial landforms on the plateaus adjacent to Valles Marineris." Icarus, 205, (1) 73–102. https://doi.org/10.1016/j.icarus.2009.04.017. 2010
• Arvidson, Raymond E., Bell, James F., III, Bellutta, P., Cabrol, Nathalie A., Catalano, J. G., Cohen, J., Crumpler, Larry S., Des Marais, D. J., Estlin, T. A., Farrand, W. H., Grant, John A., and Gellert, R. 2010. "Spirit Mars Rover Mission: Overview and selected results from the northern Home Plate Winter Haven to the side of Scamander crater." Journal of Geophysical Research. E. Planets, 115 E00F03. 2010
• McEwen, Alfred S., Banks, Maria E., Baugh, Nicole, Becker, Kris, Boyd, Aaron, Bergstrom, James W., Beyer, Ross A., Bortolini, Edward, Bridges, Nathan T., Byrne, Shane, Castalia, Bradford, Chuang, Frank C., Crumpler, Larry S., Daubar, Ingrid, Davatzes, Alix K., Deardorff, Donald G., DeJong, Alaina, Delamere, W. Alan, Dobrea, Eldar Noe, Dundas, Colin M., Eliason, Eric M., Espinoza, Yisrael, Fennema, Audrie, Fishbaugh, Kathryn E., Forrester, Terry et al. 2010. "The High Resolution Imaging Science Experiment (HiRISE) during MRO's Primary Science Phase (PSP)." Icarus, 205, (1) 2–37. https://doi.org/10.1016/j.icarus.2009.04.023. 2010
• Pratt, Lisa M., Allen, Carl, Allwood, Abby, Anbar, Ariel, Atreya, Sushil, Carr, Mike, Des Marais, Dave, Grant, John A., Glavin, Daniel, Hamilton, Vicky, Herkenhoff, Kenneth E., Hipkin, Vicky, Lollar, Barbara Sherwood, McCollom, Tom, McEwen, Alfred, McLennan, Scott, Milliken, Ralph, Ming, Doug, Ori, Gian Gabrielle, Parnell, John, Poulet, Francois, and Westall, Frances. 2010. "The Mars Astrobiology Explorer-Cacher (MAX-C): A Potential Rover Mission for 2018." Astrobiology, 10, (2) 127–163. https://doi.org/10.1089/ast.2010.0462. 2010
• Banks, Maria E., Lang, Nicholas P., Kargel, Jeffrey S., McEwen, Alfred S., Baker, Victor R., Grant, John A., Pelletier, Jon D., and Strom, Robert G. 2009. "An analysis of sinuous ridges in the southern Argyre Planitia, Mars using HiRISE and CTX images and MOLA data." Journal of Geophysical Research. E. Planets, 114 E09003. https://doi.org/10.1029/2008JE003244. 2009
• Squyres, Steven W., Knoll, A. H., Arvidson, Raymond E., Ashley, J. W., Bell, James F., III, Calvin, W. M., Christensen, Philip R., Clark, Benton C., Cohen, B. A., de Souza, P. A., Jr., Edgar, L., Farrand, W. H., Fleischer, I., Gellert, R., Golombek, M. P., Grant, John A., Grotzinger, J., Hayes, A., Herkenhoff, Kenneth E., Johnson, J. R., Jolliff, B., Klingelhöfer, Göstar, Knudson, A., Li, R., McCoy, Timothy J. et al. 2009. "Exploration of Victoria Crater by the Mars Rover Opportunity." Science, 324, (5930) 1058–1061. https://doi.org/10.1126/science.1170355. 2009
• Ehlmann, B. L., Mustard, J. F., Fassett, C. I., Schon, S. C., Head, J. W., Marais, D. J. D., Grant, John A., and Murchie, Scott L. 2008. "Clay minerals in delta deposits and organic preservation potential on Mars." Nature Geoscience, 1, (6) 355–358. https://doi.org/10.1038/ngeo207. 2008
• Grant, John A., Wilson, Sharon A., Cohen, B. A., Golombek, M. P., Geissler, P. E., Sullivan, R. J., Kirk, R. L., and Parker, T. J. 2008. "Degradation of Victoria Crater, Mars." Journal of Geophysical Research. E. Planets, 113 E11010. 2008
• Grant, John A., Irwin, Rossman P., III, Grotzinger, John P., Milliken, Ralph E., Tornabene, Livio L., McEwen, Alfred S., Weitz, Catherine M., Squyres, Steven W., Glotch, Timothy D., and Thomson, Brad J. 2008. "HiRISE imaging of impact megabreccia and sub-meter aqueous strata in Holden Crater, Mars." Geology, 36, (3) 195–198. https://doi.org/10.1130/G24340A.1. 2008
• Mustard, John F., Murchie, Scott L., Pelkey, S. M., Ehlmann, B. L., Milliken, R. E., Grant, John A., Bibring, Jean-Pierre, Poulet, F., Bishop, J., Dobrea, E. Noe, Roach, L., Seelos, F., Arvidson, Raymond E., Wiseman, S., Green, R., Hash, C., Humm, D., Malaret, E., McGovern, J. A., Seelos, K., Clancy, T., Clark, R., Marais, D. D., Izenberg, N., Knudson, A. et al. 2008. "Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument." Nature, 454, (7202) 305–309. https://doi.org/10.1038/nature07097. 2008
• Weitz, Catherine M., Milliken, R. E., Grant, John A., McEwen, A. S., Williams, R. M. E., and Bishop, J. L. 2008. "Light-toned strata and inverted channels adjacent to Juventae and Ganges chasmata, Mars." Geophysical Research Letters, 35, (19) L19202–L19202. https://doi.org/10.1029/2008GL035317. 2008
• Arvidson, Raymond E., Ruff, S. W., Morris, R. V., Ming, D. W., Crumpler, Larry S., Yen, A. S., Squyres, Steven W., Sullivan, R. J., Bell, James F., III, Cabrol, Nathalie A., Clark, Benton C., Farrand, W. H., Gellert, R., Greenberger, R., Grant, John A., Guiness, E. A., Herkenhoff, Kenneth E., Hurowitz, J. A., Johnson, J. R., Klingelhöfer, Göstar, Lewis, K. W., Li, R., McCoy, Timothy J., Moersch, J., McSween, Harry Y. et al. 2008. "Spirit Mars Rover Mission to the Columbia Hills, Gusev Crater: Mission overview and selected results from the Cumberland Ridge to Home Plate." Journal of Geophysical Research. E. Planets, 113 E12S33. 2008
• McCoy, Timothy J., Sims, M., Schmidt, M. E., Edwards, L., Tornabene, Livio L., Crumpler, Larry S., Cohen, B. A., Soderblom, L. A., Blaney, Diana L., Squyres, Steven W., Arvidson, Raymond E., Rice, J. W., Treguier, E., d'Uston, C., Grant, John A., McSween, Harry Y., Golombek, M. P., Haldemann, A. F. C., and de Souza, P. A. 2008. "Structure, stratigraphy, and origin of Husband Hill, Columbia Hills, Gusev Crater, Mars." Journal of Geophysical Research. E. Planets, 113 E06S03. 2008
• McEwen, A. S., Hansen, C. J., Delamere, W. A., Eliason, E. M., Herkenhoff, Kenneth E., Keszthelyi, L., Gulick, V. C., Kirk, R. L., Mellon, M. T., Grant, John A., Thomas, Nicolas, Weitz, Catherine M., Squyres, Steven W., Bridges, N. T., Murchie, Scott L., Seelos, F., Seelos, K., Okubo, C. H., Milazzo, M. P., Tornabene, Livio L., Jaeger, W. L., Byrne, S., Russell, Patrick S., Griffes, J. L., Martinez-Alonso, S. et al. 2007. "A Closer Look at Water-Related Geologic Activity on Mars." Science, 317, (5845) 1706–1709. https://doi.org/10.1126/science.1143987. 2007
• Wilson, Sharon A., Howard, A. D., Moore, J. M., and Grant, John A. 2007. "Geomorphic and stratigraphic analysis of Crater Terby and layered deposits north of Hellas basin, Mars." Journal of Geophysical Research. E. Planets, 112. https://doi.org/10.1029/2006JE002830. 2007
• McEwen, A. S., Eliason, E. M., Bergstrom, J. W., Bridges, N. T., Hansen, C. J., Delamere, W. A., Grant, John A., Gulick, V. C., Herkenhoff, Kenneth E., Keszthelyi, L., Kirk, R. L., Mellon, M. T., Squyres, Steven W., Thomas, Nicolas, and Weitz, Catherine M. 2007. "Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE)." Journal of Geophysical Research. E. Planets, 112. https://doi.org/10.1029/2005JE002605. 2007
• Squyres, Steven W., Aharonson, O., Clark, Benton C., Cohen, B. A., Crumpler, Larry S., de Souza, P. A., Farrand, W. H., Gellert, R., Grant, John A., Grotzinger, J. P., Haldemann, A. F., Johnson, J. R., Klingelhöfer, Göstar, Lewis, K. W., Li, R., McCoy, Timothy J., McEwen, A. S., McSween, Harry Y., Ming, D. W., Moore, J. M., Morris, R. V., Parker, T. J., Rice, J. W.,Jr., Ruff, S., Schmidt, M. et al. 2007. "Pyroclastic activity at Home Plate in Gusev Crater, Mars." Science, 316, (5825) 738–742. https://doi.org/10.1126/science.1139045. 2007

Blog Posting

• Grant, John A. 2016. "Ancient Water Systems on Mars." Smithsonian National Air and Space Museum Stories Washington, DC: Smithsonian National Air and Space Museum. May 2, 2016. https://airandspace.si.edu/research/projects/ancient-water-systems-mars. 2016
• Grant, John A. 2015. "Mars: One Mystery Revealed, Many More to Solve." AIRSPACE BLOG: Behind the Scenes at the National Air and Space Museum Washington, DC: Smithsonian National Air and Space Museum. Sep 30, 2015. http://blog.nasm.si.edu/planetary-science/mars-mystery/. 2015
• Grant, John A. 2014. "10 Years on Mars." AIRSPACE BLOG: Behind the Scenes at the National Air and Space Museum Washington, DC: Smithsonian National Air and Space Museum. Jan 7, 2014. http://blog.nasm.si.edu/research/10-years-on-mars/. 2014
• Grant, John A. 2011. "A New Curiosity." AIRSPACE BLOG: Behind the Scenes at the National Air and Space Museum Washington, DC: Smithsonian National air and Space Museum. Jul 3, 2011. http://blog.nasm.si.edu/on-view-at-the-museum/a-new-curiosity/. 2011
• Grant, John A. 2011. "Curiosity Landing Site." AIRSPACE BLOG: Behind the Scenes at the National Air and Space Museum Washington, DC: Smithsonian National air and Space Museum. Jul 22, 2011. http://blog.nasm.si.edu/planetary-science/curiosity-landing-site/. 2011
• Grant, John A. 2011. "Was Mars Ever Habitable?" AIRSPACE BLOG: Behind the Scenes at the National Air and Space Museum Washington, DC: Smithsonian National Air and Space Museum. Nov 16, 2011. http://blog.nasm.si.edu/planetary-science/life-on-mars/. 2011

Chapter

• Grant, John A., Irwin, Rossman P., III, and Wilson, Sharon A. 2010. "Aqueous depositional settings in Holden crater, Mars." In Lakes on Mars. Cabrol, Nathalie A. and Grin, Edmond A., editors. 323–346. Oxford, UK: Elsevier. 2010
• Parker, T. J., Grant, John A., and Franklin, B. J. 2010. "The Northern Plains: A Martian Oceanic Basin?" In Lakes on Mars. Cabrol, Nathalie A. and Grin, Edmond A., editors. 249–273. Oxford, UK: Elsevier. 2010
• Irwin, Rossman P., III and Grant, John A. 2009. "Large basin overflow floods on Mars." In Megaflooding on Earth and Mars. Burr, D., Baker, V., and Carling, P., editors. 209–221. Cambridge, U.K.: Cambridge University Press. 2009

Dataset

• Grant, John A. 2023. [Dataset] Data Repository/Supplemental File for Late Drainage Along Portions of Samara Valles. [1085772-Bytes] Distributed by Washington, DC: Smithsonian National Air and Space Museum. https://doi.org/10.25573/DATA.22939940.V2. 2023
• Grant, John A. and Purdy, Sharon A. 2021. [Dataset] Constraints on Degradation at the InSight Landing Site, Homestead Hollow, Mars, from Rock Heights and Shapes. Distributed by The Smithsonian Institution. https://doi.org/10.25573/DATA.14924253.V3. 2021
• Grant, John A., Purdy, Sharon A., Golombek, Matthew, Trussell, Allyson, Warner, Nicholas, Williams, Nathan R., Weitz, Catherine M., Abarca, Hallie, and Deen, Robert. 2021. [Dataset] Final Data for Constraints on Degradation at the InSight Landing Site, Homestead Hollow, Mars, from Rock Heights and Shapes Item. Distributed by National Air and Space Museum. https://doi.org/10.25573/DATA.15121554.V6. 2021
• Grant, John A. 2020. [Dataset] Color Rocks North East and South of Lander Sol 14 D_LRGB_0014_RAS030100CYL_R__SCIPANQM1.jpg. Distributed by The Smithsonian Institution. https://doi.org/10.25573/DATA.11774589.V1. 2020
• Purdy, Sharon A., Morgan, Alexander M., Grant, John A., and Howard, Alan D. 2020. [Dataset] Global inventory of craters on Mars with alluvial fans and putative deltas (scarp-fronted fans) using CTX data. Distributed by The Smithsonian Institution. https://doi.org/10.25573/DATA.13455788.V1. 2020

Map

• Wilson, Sharon A., Grant, John A., and Williams, Kevin K. 2022. "Geologic Map of Morava Valles and Margaritifer basin, Mars, MTM Quadrangles -10022 and -15022." Scientific Investigations Map, Reston: U.S. Geological Survey, 1:1:500,000. https://doi.org/10.3133/sim3489. 2022
• Irwin, Rossman P., III and Grant, John A. 2013. "Geologic Map of MTM –15027, –20027, –25027, and –25032 Quadrangles, Margaritifer Terra Region of Mars, Scientific Investigations Map 3209, scale 1:1004,000." USGS. 2013
• Grant, John A., Wilson, Sharon A., Fortezzo, C. M., and Clark, D. A. 2009. "Geologic map of MTM -0012 and -25012 quadrangles, Margaritifer Terra region of Mars, Scientific Investigations Map 3041 12p. Pamphlet." Washington, DC: United States Geological Survey (USGS), 1:1004000. https://doi.org/10.3133/sim3041. 2009