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Mineralogy of a mudstone at Yellowknife Bay, Gale Crater, Mars
Planetary Science Institute, Tucson.
Indiana University, Department of Geological Sciences, Bloomington.
NASA Johnson Space Center, Houston.
NASA Ames.
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Number of Authors: 382014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 343, no 6169, article id 1243480Article in journal (Refereed) Published
Abstract [en]

Sedimentary rocks at Yellowknife Bay (Gale crater) on Mars include mudstone sampled by the Curiosity rover. The samples, John Klein and Cumberland, contain detrital basaltic minerals, calcium sulfates, iron oxide or hydroxides, iron sulfides, amorphous material, and trioctahedral smectites. The John Klein smectite has basal spacing of ~10 angstroms, indicating little interlayer hydration. The Cumberland smectite has basal spacing at both ~13.2 and ~10 angstroms. The larger spacing suggests a partially chloritized interlayer or interlayer magnesium or calcium facilitating H2O retention. Basaltic minerals in the mudstone are similar to those in nearby eolian deposits. However, the mudstone has far less Fe-forsterite, possibly lost with formation of smectite plus magnetite. Late Noachian/Early Hesperian or younger age indicates that clay mineral formation on Mars extended beyond Noachian time.

Place, publisher, year, edition, pages
2014. Vol. 343, no 6169, article id 1243480
National Category
Aerospace Engineering
Research subject
Atmospheric science
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URN: urn:nbn:se:ltu:diva-5898DOI: 10.1126/science.1243480ISI: 000330039300003PubMedID: 24324271Scopus ID: 2-s2.0-84892938458Local ID: 4155e976-b90a-47df-96ef-fe61dba162faOAI: oai:DiVA.org:ltu-5898DiVA, id: diva2:978774
Note

Upprättat; 2014; Bibliografisk uppgift: Javier Martín-Torres ingår i the MSL Team; 20150224 (ninhul)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-05-14Bibliographically approved

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