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dc.contributor.authorGwizd, S.
Fedo, C.
Grotzinger, J.
Banham, S.
Rivera-Hernández, F.
Stack, K. M.
Siebach, K.
Thorpe, M.
Thompson, L.
O’Connell-Cooper, C.
Stein, N.
Edgar, L.
Gupta, S.
Rubin, D.
Sumner, D.
Vasavada, A. R.
dc.date.accessioned 2022-09-29T15:06:26Z
dc.date.available 2022-09-29T15:06:26Z
dc.date.issued 2022
dc.identifier.citation Gwizd, S., Fedo, C., Grotzinger, J., et al.. "Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars." Journal of Geophysical Research: Planets, 127, no. 8 (2022) Wiley: https://doi.org/10.1029/2022JE007280.
dc.identifier.urihttps://hdl.handle.net/1911/113430
dc.description.abstract This study utilizes instruments from the Curiosity rover payload to develop an integrated paleoenvironmental and compositional reconstruction for the 65-m thick interval of stratigraphy comprising the Hartmann's Valley and Karasburg members of the Murray formation, Gale crater, Mars. The stratigraphy consists of cross-stratified sandstone (Facies 1), planar-laminated sandstone (Facies 2), and planar-laminated mudstone (Facies 3). Facies 1 is composed of sandstone showing truncated sets of concave-curvilinear laminae stacked into cosets. Sets are estimated to be meter-to sub-meter-scale, consistent with low-height dunes. Thin stratigraphic intervals of Facies 1 and stacking patterns with Facies 2 and 3 support a wet aeolian dune interpretation. Meter-thick packages of planar-laminated sandstone (Facies 2) are interpreted to represent interfingering dune-interdune strata. Facies 3 consists of meter-thick packages of planar-laminated mudstone interpreted to represent lacustrine deposition with persistent standing water. Integration of geochemistry with each facies reveals some compositional control based on the depositional process. Models for source rock composition from Alpha Particle X-Ray Spectrometer measurements show that facies derived from a basaltic source. Alteration indices and geochemical trends provide evidence that moderate chemical weathering occurred before compositional changes due to diagenesis. Differences in wt% FeO(T) and TiO2 between facies are minimal, though trends point to sediment sorting in transport. Comparisons to terrestrial basaltic sedimentary systems indicate that the Hartmann's Valley and Karasburg facies reflect deposition in an environment where diverse subaqueous and subaerial facies persisted adjacent to a long-lived body of water.
dc.language.iso eng
dc.publisher Wiley
dc.rights This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.title Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars
dc.type Journal article
dc.citation.journalTitle Journal of Geophysical Research: Planets
dc.citation.volumeNumber 127
dc.citation.issueNumber 8
dc.identifier.digital JGRPlanets-2022-Gwizd
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1029/2022JE007280
dc.type.publication publisher version
dc.citation.articleNumber e2022JE007280


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