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      Deposition, exhumation, and paleoclimate of an ancient lake deposit, Gale crater, Mars

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      American Association for the Advancement of Science (AAAS)

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          A habitable fluvio-lacustrine environment at Yellowknife Bay, Gale crater, Mars.

          The Curiosity rover discovered fine-grained sedimentary rocks, which are inferred to represent an ancient lake and preserve evidence of an environment that would have been suited to support a martian biosphere founded on chemolithoautotrophy. This aqueous environment was characterized by neutral pH, low salinity, and variable redox states of both iron and sulfur species. Carbon, hydrogen, oxygen, sulfur, nitrogen, and phosphorus were measured directly as key biogenic elements; by inference, phosphorus is assumed to have been available. The environment probably had a minimum duration of hundreds to tens of thousands of years. These results highlight the biological viability of fluvial-lacustrine environments in the post-Noachian history of Mars.
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            Sediment Accumulation Rates and the Completeness of Stratigraphic Sections

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              Stratigraphy and sedimentology of a dry to wet eolian depositional system, Burns formation, Meridiani Planum, Mars

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                Author and article information

                Journal
                Science
                Science
                American Association for the Advancement of Science (AAAS)
                0036-8075
                1095-9203
                October 08 2015
                October 08 2015
                : 350
                : 6257
                : aac7575
                Article
                10.1126/science.aac7575
                26450214
                ac6c769c-f7d8-4eb6-af9b-3d8b10ba3f05
                © 2015

                http://www.sciencemag.org/about/science-licenses-journal-article-reuse

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