Farley, K. A. and Stack, K. M. and Shuster, D. L. and Horgan, B. H. N. and Hurowitz, J. A. and Tarnas, J. D. and Simon, J. I. and Sun, V. Z. and Scheller, E. L. and Moore, K. R. and McLennan, S. M. and Vasconcelos, P. M. and Wiens, R. C. and Treiman, A. H. and Mayhew, L. E. and Beyssac, O. and Kizovski, T. V. and Tosca, N. J. and Williford, K. H. and Crumpler, L. S. and Beegle, L. W. and Bell, J. F. and Ehlmann, B. L. and Liu, Y. and Maki, J. N. and Schmidt, M. E. and Allwood, A. C. and Amundsen, H. E. F. and Bhartia, R. and Bosak, T. and Brown, A. J. and Clark, B. C. and Cousin, A. and Forni, O. and Gabriel, T. S. J. and Goreva, Y. and Gupta, S. and Hamran, S.-E. and Herd, C. D. K. and Hickman-Lewis, K. and Johnson, J. R. and Kah, L. C. and Kelemen, P. B. and Kinch, K. B. and Mandon, L. and Mangold, N. and Quantin-Nataf, C. and Rice, M. S. and Russell, P. S. and Sharma, S. and Siljeström, S. and Steele, A. and Sullivan, R. and Wadhwa, M. and Weiss, B. P. and Williams, A. J. and Wogsland, B. V. and Willis, P. A. and Acosta-Maeda, T. A. and Beck, P. and Benzerara, K. and Bernard, S. and Burton, A. S. and Cardarelli, E. L. and Chide, B. and Clavé, E. and Cloutis, E. A. and Cohen, B. A. and Czaja, A. D. and Debaille, V. and Dehouck, E. and Fairén, A. G. and Flannery, D. T. and Fleron, S. Z. and Fouchet, T. and Frydenvang, J. and Garczynski, B. J. and Gibbons, E. F. and Hausrath, E. M. and Hayes, A. G. and Henneke, J. and Jørgensen, J. L. and Kelly, E. M. and Lasue, J. and Le Mouélic, S. and Madariaga, J. M. and Maurice, S. and Merusi, M. and Meslin, P.-Y. and Milkovich, S. M. and Million, C. C. and Moeller, R. C. and Núñez, J. I. and Ollila, A. M. and Paar, G. and Paige, D. A. and Pedersen, D. A. K. and Pilleri, P. and Pilorget, C. and Pinet, P. C. and Rice, J. W. and Royer, C. and Sautter, V. and Schulte, M. and Sephton, M. A. and Sharma, S. K. and Sholes, S. F. and Spanovich, N. and St. Clair, M. and Tate, C. D. and Uckert, K. and VanBommel, S. J. and Yanchilina, A. G. and Zorzano, M.-P. (2022) Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars. Science, 377 (6614). Art. No. eabo2196. ISSN 0036-8075. doi:10.1126/science.abo2196. https://resolver.caltech.edu/CaltechAUTHORS:20221212-615014000.1
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Abstract
The Perseverance rover landed in Jezero crater, Mars, to investigate ancient lake and river deposits. We report observations of the crater floor, below the crater’s sedimentary delta, finding that the floor consists of igneous rocks altered by water. The lowest exposed unit, informally named Séítah, is a coarsely crystalline olivine-rich rock, which accumulated at the base of a magma body. Magnesium-iron carbonates along grain boundaries indicate reactions with carbon dioxide–rich water under water-poor conditions. Overlying Séítah is a unit informally named Máaz, which we interpret as lava flows or the chemical complement to Séítah in a layered igneous body. Voids in these rocks contain sulfates and perchlorates, likely introduced by later near-surface brine evaporation. Core samples of these rocks have been stored aboard Perseverance for potential return to Earth.
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| Additional Information: | Funding: This effort was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). K.A.F., K.M.S., J.D.T., V.Z.S., Y.L., J.N.M., A.C.A., Y.G., P.A.W., E.L.C., S.M.Mi., R.C.M., S.F.S., N.S., and K.U. were supported by NASA grant 80NM0018D0004 through JPL. D.T.F. was supported by Australian Research Council grant DE210100205. E.F.G. was supported by Canadian Space Agency grant 21EXPCOI1. E.A.C. was supported by Canadian Space Agency grant 19PACOI0 and Natural Sciences and Engineering Research Council of Canada grant RGPIN-2021-02995. C.D.K.H., T.V.K., and M.E.S. were supported by Canadian Space Agency M2020 Participating Scientist grants. M.M. was supported by the EU’s Horizon 2020 research and innovation program under the Marie Skłodowska Curie grant 801199. G.P. was supported by ESA PRODEX Experiment Arrangement PEA 4000117520. V.D. was supported by Fonds pour la Recherche Scientifique. A.J.W., S.J.V., D.L.S., J.I.S., L.E.M., T.B., and E.M.H. were supported by NASA Mars 2020 Participating Scientist grants. T.B. was supported by the Simons Foundation Collaboration on the Origins of Life grant 327126. R.C.W. was supported by NASA Mars 2020 contracts NNH15AZ24I and NNH13ZDA018O for SuperCam and a LANL internal LDRD grant. S.K.S. was supported by JPL subcontract 1654163. S.G. was supported by the Royal Society Leverhulme Trust Senior Research Fellowship (SRF\R1\21000106) and the UK Space Agency Aurora program. M.-P.Z. was supported by the Spanish Ministry of Science and Innovation under grant PID2019-104205GB-C21. S.Si. was supported by the Swedish National Space Agency under contracts 137/19 and 2021-00092. K.B.K. was supported by the Carlsberg Foundation, grant CF19-0023. S.-E.H. was supported by the Research Council of Norway under grants 301238 and 309835. The work of O.B., A.C., O.F., L.M., N.M., C.Q.-N., P.B., K.B., B.C., E.C., E.D., T.F., J.L., S.L.M., S.M., P.-Y.M., P.P., C.P., P.C.P., C.R., and V.S. on Mars 2020 was supported by CNES. K.H.-L. was supported by a UK Space Agency Aurora Research Fellowship. M.A.S. was supported by UK Space Agency grants ST/V002732/1 and ST/V006134/1. J.F.B. was supported by NASA-JPL subcontract number 1511125. A.G.F. was supported by the European Research Council, Consolidator Grant 818602. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Group: | Division of Geological and Planetary Sciences | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Issue or Number: | 6614 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1126/science.abo2196 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20221212-615014000.1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20221212-615014000.1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| ID Code: | 118293 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited By: | Research Services Depository | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 13 Dec 2022 00:14 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 13 Dec 2022 17:42 |
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