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Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars

McLennan, Scott M.; Anderson, R.B.; Bell, J.F.; Briges, J.C.; Calef , F.; Campbell, J.L.; Clark, B.C; Clegg, S.; Conrad, P; Des Marais, D.J.; Dromart, G; King, Penelope


Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleoclimates and rapid erosion and deposition. The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH,...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Science
DOI: 10.1126/science.1244734


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