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(2020) Evidence of Early and Late Diagenesis of Sediments from Past Habitable Environments in Gale Crater, Mars: A Mastcam Multispectral Perpsective

Rudolph A, Haber J, Horgan B, Bennett K, Fox V, Seeger C, Rice M, Johnson J, Bell Iii J, Jacob S & Rampe E


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01b: Room 1, Tuesday 23rd June 00:12 - 00:15

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Submitted by Elizabeth Swanner on Sunday 21st June 20:10
Several of the potential analogs seemed very divergent. How do you reconcile a buried soil/paleosol within a fluviolacustrine system?
Thanks for your question! A paleosol would indicate a period of low lake levels and exposure of sediments, in terrestrial lacustrine sequences you see paleosols when the shoreline moves inward. So the clay-rich sediments in Glen Torridon may have formed through the weathering of lacustrine sediments as the shoreline of the fluviolacustrine system fluctuated and because of that the clay-rich region we see today could represent a clay-rich soil horizon/paleosol.

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