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 Seitah, 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 Seitah is a unit informally named Maaz, which we interpret as lava flows or the chemical complement to Seitah 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.
Original language | English |
---|---|
Article number | eabo2196 |
Journal | Science |
Volume | 377 |
Issue number | 6614 |
Number of pages | 12 |
ISSN | 0036-8075 |
DOIs | |
Publication status | Published - 30 Sep 2022 |
Keywords
- LITHOAUTOTROPHIC MICROBIAL ECOSYSTEMS
- MINERAL CARBONATION
- BASIN LAKES
- OLIVINE
- SYSTEM
- DEPOSITS
- BEDROCK
- SURFACE
- VALLEY
- HALITE
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Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars. / 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.; Nuñez, 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.; Clair, M. St.; Tate, C. D.; Uckert, K.; VanBommel, S. J.; Yanchilina, A. G.; Zorzano, M.-P.
In: Science, Vol. 377, No. 6614, eabo2196, 30.09.2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Aqueously altered igneous rocks sampled on the floor of Jezero crater, Mars
AU - Farley, K. A.
AU - Stack, K. M.
AU - Shuster, D. L.
AU - Horgan, B. H. N.
AU - Hurowitz, J. A.
AU - Tarnas, J. D.
AU - Simon, J. I.
AU - Sun, V. Z.
AU - Scheller, E. L.
AU - Moore, K. R.
AU - McLennan, S. M.
AU - Vasconcelos, P. M.
AU - Wiens, R. C.
AU - Treiman, A. H.
AU - Mayhew, L. E.
AU - Beyssac, O.
AU - Kizovski, T. V.
AU - Tosca, N. J.
AU - Williford, K. H.
AU - Crumpler, L. S.
AU - Beegle, L. W.
AU - Bell, J. F.
AU - Ehlmann, B. L.
AU - Liu, Y.
AU - Maki, J. N.
AU - Schmidt, M. E.
AU - Allwood, A. C.
AU - Amundsen, H. E. F.
AU - Bhartia, R.
AU - Bosak, T.
AU - Brown, A. J.
AU - Clark, B. C.
AU - Cousin, A.
AU - Forni, O.
AU - Gabriel, T. S. J.
AU - Goreva, Y.
AU - Gupta, S.
AU - Hamran, S.-E.
AU - Herd, C. D. K.
AU - Hickman-Lewis, K.
AU - Johnson, J. R.
AU - Kah, L. C.
AU - Kelemen, P. B.
AU - Kinch, K. B.
AU - Mandon, L.
AU - Mangold, N.
AU - Quantin-Nataf, C.
AU - Rice, M. S.
AU - Russell, P. S.
AU - Sharma, S.
AU - Siljeström, S.
AU - Steele, A.
AU - Sullivan, R.
AU - Wadhwa, M.
AU - Weiss, B. P.
AU - Williams, A. J.
AU - Wogsland, B. V.
AU - Willis, P. A.
AU - Acosta-Maeda, T. A.
AU - Beck, P.
AU - Benzerara, K.
AU - Bernard, S.
AU - Burton, A. S.
AU - Cardarelli, E. L.
AU - Chide, B.
AU - Clavé, E.
AU - Cloutis, E. A.
AU - Cohen, B. A.
AU - Czaja, A. D.
AU - Debaille, V.
AU - Dehouck, E.
AU - Fairén, A. G.
AU - Flannery, D. T.
AU - Fleron, S. Z.
AU - Fouchet, T.
AU - Frydenvang, J.
AU - Garczynski, B. J.
AU - Gibbons, E. F.
AU - Hausrath, E. M.
AU - Hayes, A. G.
AU - Henneke, J.
AU - Jørgensen, J. L.
AU - Kelly, E. M.
AU - Lasue, J.
AU - Le Mouélic, S.
AU - Madariaga, J. M.
AU - Maurice, S.
AU - Merusi, M.
AU - Meslin, P.-Y.
AU - Milkovich, S. M.
AU - Million, C. C.
AU - Moeller, R. C.
AU - Nuñez, J. I.
AU - Ollila, A. M.
AU - Paar, G.
AU - Paige, D. A.
AU - Pedersen, D. A. K.
AU - Pilleri, P.
AU - Pilorget, C.
AU - Pinet, P. C.
AU - Rice, J. W.
AU - Royer, C.
AU - Sautter, V.
AU - Schulte, M.
AU - Sephton, M. A.
AU - Sharma, S. K.
AU - Sholes, S. F.
AU - Spanovich, N.
AU - Clair, M. St.
AU - Tate, C. D.
AU - Uckert, K.
AU - VanBommel, S. J.
AU - Yanchilina, A. G.
AU - Zorzano, M.-P.
PY - 2022/9/30
Y1 - 2022/9/30
N2 - 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 Seitah, 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 Seitah is a unit informally named Maaz, which we interpret as lava flows or the chemical complement to Seitah 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.
AB - 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 Seitah, 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 Seitah is a unit informally named Maaz, which we interpret as lava flows or the chemical complement to Seitah 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.
KW - LITHOAUTOTROPHIC MICROBIAL ECOSYSTEMS
KW - MINERAL CARBONATION
KW - BASIN LAKES
KW - OLIVINE
KW - SYSTEM
KW - DEPOSITS
KW - BEDROCK
KW - SURFACE
KW - VALLEY
KW - HALITE
U2 - 10.1126/science.abo2196
DO - 10.1126/science.abo2196
M3 - Journal article
C2 - 36007009
VL - 377
JO - Science
JF - Science
SN - 0036-8075
IS - 6614
M1 - eabo2196
ER -