Redox stratification of an ancient lake in Gale crater, Mars

J. A. Hurowitz; J. P. Grotzinger; W. W. Fischer; S. M. Mclennan; R. E. Milliken; N. Stein; A. R. Vasavada; D. F. Blake; E. Dehouck; Jennifer L. Eigenbrode; A. G. Fairén; Jens Frydenvang; R. Gellert; J. A. Grant; S. Gupta; K. E. Herkenhoff; D. W. Ming; E. B. Rampe; M. E. Schmidt; K. L. Siebach; K. Stack-morgan; D. Y. Sumner; R. C. Wiens

doi:10.1126/science.aah6849

Redox stratification of an ancient lake in Gale crater, Mars

J. A. Hurowitz, J. P. Grotzinger, W. W. Fischer, S. M. Mclennan, R. E. Milliken, N. Stein, A. R. Vasavada, D. F. Blake, E. Dehouck, Jennifer L. Eigenbrode, A. G. Fairén, Jens Frydenvang, R. Gellert, J. A. Grant, S. Gupta, K. E. Herkenhoff, D. W. Ming, E. B. Rampe, M. E. Schmidt, K. L. SiebachK. Stack-morgan, D. Y. Sumner, R. C. Wiens

121 Citationer (Scopus)

Abstract

In 2012, NASA's Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by sedimentary rocks inside the -150-kilometer-diameter Gale impact crater. Geological reconstructions from Curiosity rover data have revealed an ancient, habitable lake environment fed by rivers draining into the crater. We synthesize geochemical and mineralogical data from lake-bed mudstones collected during the first 1300 martian solar days of rover operations in Gale. We present evidence for lake redox stratification, established by depth-dependent variations in atmospheric oxidant and dissolved-solute concentrations. Paleoclimate proxy data indicate that a transition from colder to warmer climate conditions is preserved in the stratigraphy. Finally, a late phase of geochemical modification by saline fluids is recognized.

Originalsprog	Engelsk
Artikelnummer	eaah6849
Tidsskrift	Science
Vol/bind	356
Udgave nummer	6341
Antal sider	11
ISSN	0036-8075
DOI	https://doi.org/10.1126/science.aah6849
Status	Udgivet - 2 jun. 2017

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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., Fairén, A. G., Frydenvang, J., Gellert, R., Grant, J. A., Gupta, S., Herkenhoff, K. E., Ming, D. W., Rampe, E. B., Schmidt, M. E., ... Wiens, R. C. (2017). Redox stratification of an ancient lake in Gale crater, Mars. Science, 356(6341), [eaah6849]. https://doi.org/10.1126/science.aah6849

Hurowitz, JA, Grotzinger, JP, Fischer, WW, Mclennan, SM, Milliken, RE, Stein, N, Vasavada, AR, Blake, DF, Dehouck, E, Eigenbrode, JL, Fairén, AG, Frydenvang, J, Gellert, R, Grant, JA, Gupta, S, Herkenhoff, KE, Ming, DW, Rampe, EB, Schmidt, ME, Siebach, KL, Stack-morgan, K, Sumner, DY & Wiens, RC 2017, 'Redox stratification of an ancient lake in Gale crater, Mars', Science, bind 356, nr. 6341, eaah6849. https://doi.org/10.1126/science.aah6849

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title = "Redox stratification of an ancient lake in Gale crater, Mars",

abstract = "In 2012, NASA's Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by sedimentary rocks inside the -150-kilometer-diameter Gale impact crater. Geological reconstructions from Curiosity rover data have revealed an ancient, habitable lake environment fed by rivers draining into the crater. We synthesize geochemical and mineralogical data from lake-bed mudstones collected during the first 1300 martian solar days of rover operations in Gale. We present evidence for lake redox stratification, established by depth-dependent variations in atmospheric oxidant and dissolved-solute concentrations. Paleoclimate proxy data indicate that a transition from colder to warmer climate conditions is preserved in the stratigraphy. Finally, a late phase of geochemical modification by saline fluids is recognized.",

author = "Hurowitz, {J. A.} and Grotzinger, {J. P.} and Fischer, {W. W.} and Mclennan, {S. M.} and Milliken, {R. E.} and N. Stein and Vasavada, {A. R.} and Blake, {D. F.} and E. Dehouck and Eigenbrode, {Jennifer L.} and Fair{\'e}n, {A. G.} and Jens Frydenvang and R. Gellert and Grant, {J. A.} and S. Gupta and Herkenhoff, {K. E.} and Ming, {D. W.} and Rampe, {E. B.} and Schmidt, {M. E.} and Siebach, {K. L.} and K. Stack-morgan and Sumner, {D. Y.} and Wiens, {R. C.}",

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T1 - Redox stratification of an ancient lake in Gale crater, Mars

AU - Hurowitz, J. A.

AU - Grotzinger, J. P.

AU - Fischer, W. W.

AU - Mclennan, S. M.

AU - Milliken, R. E.

AU - Stein, N.

AU - Vasavada, A. R.

AU - Blake, D. F.

AU - Dehouck, E.

AU - Eigenbrode, Jennifer L.

AU - Fairén, A. G.

AU - Frydenvang, Jens

AU - Gellert, R.

AU - Grant, J. A.

AU - Gupta, S.

AU - Herkenhoff, K. E.

AU - Ming, D. W.

AU - Rampe, E. B.

AU - Schmidt, M. E.

AU - Siebach, K. L.

AU - Stack-morgan, K.

AU - Sumner, D. Y.

AU - Wiens, R. C.

PY - 2017/6/2

Y1 - 2017/6/2

N2 - In 2012, NASA's Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by sedimentary rocks inside the -150-kilometer-diameter Gale impact crater. Geological reconstructions from Curiosity rover data have revealed an ancient, habitable lake environment fed by rivers draining into the crater. We synthesize geochemical and mineralogical data from lake-bed mudstones collected during the first 1300 martian solar days of rover operations in Gale. We present evidence for lake redox stratification, established by depth-dependent variations in atmospheric oxidant and dissolved-solute concentrations. Paleoclimate proxy data indicate that a transition from colder to warmer climate conditions is preserved in the stratigraphy. Finally, a late phase of geochemical modification by saline fluids is recognized.

AB - In 2012, NASA's Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by sedimentary rocks inside the -150-kilometer-diameter Gale impact crater. Geological reconstructions from Curiosity rover data have revealed an ancient, habitable lake environment fed by rivers draining into the crater. We synthesize geochemical and mineralogical data from lake-bed mudstones collected during the first 1300 martian solar days of rover operations in Gale. We present evidence for lake redox stratification, established by depth-dependent variations in atmospheric oxidant and dissolved-solute concentrations. Paleoclimate proxy data indicate that a transition from colder to warmer climate conditions is preserved in the stratigraphy. Finally, a late phase of geochemical modification by saline fluids is recognized.

U2 - 10.1126/science.aah6849

DO - 10.1126/science.aah6849

M3 - Journal article

C2 - 28572336

SN - 0036-8075

VL - 356

JO - Science

JF - Science

IS - 6341

M1 - eaah6849

ER -

Redox stratification of an ancient lake in Gale crater, Mars

Abstract

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