globalchange  > 气候减缓与适应
DOI: 10.1002/2017JE005474
Scopus记录号: 2-s2.0-85045547448
论文题名:
Diverse Lithologies and Alteration Events on the Rim of Noachian-Aged Endeavour Crater, Meridiani Planum, Mars: In Situ Compositional Evidence
作者: Mittlefehldt D.W.; Gellert R.; vanBommel S.; Ming D.W.; Yen A.S.; Clark B.C.; Morris R.V.; Schröder C.; Crumpler L.S.; Grant J.A.; Jolliff B.L.; Arvidson R.E.; Farrand W.H.; Herkenhoff K.E.; Bell J.F.; III; Cohen B.A.; Klingelhöfer G.; Schrader C.M.; Rice J.W.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期:5
起始页码: 1255
结束页码: 1306
语种: 英语
英文关键词: Endeavour Crater ; geochemistry ; impact breccia ; Mars alteration ; Mars Exploration Rover
Scopus关键词: breccia ; clastic sediment ; crater ; fine grained sediment ; geochemistry ; lithology ; Mars ; Hesperia
英文摘要: We report the results of geological studies by the Opportunity Mars rover on the Endeavour Crater rim. Four major units occur in the region (oldest to youngest): the Matijevic, Shoemaker, Grasberg, and Burns formations. The Matijevic formation, consisting of fine-grained clastic sediments, is the only pre-Endeavour-impact unit and might be part of the Noachian etched units of Meridiani Planum. The Shoemaker formation is a heterogeneous polymict impact breccia; its lowermost member incorporates material eroded from the underlying Matijevic formation. The Shoemaker formation is a close analog to the Bunte Breccia of the Ries Crater, although the average clast sizes are substantially larger in the latter. The Grasberg formation is a thin, fine-grained, homogeneous sediment unconformably overlying the Shoemaker formation and likely formed as an airfall deposit of unknown areal extent. The Burns formation sandstone overlies the Grasberg, but compositions of the two units are distinct; there is no evidence that the Grasberg formation is a fine-grained subfacies of the Burns formation. The rocks along the Endeavour Crater rim were affected by at least four episodes of alteration in the Noachian and Early Hesperian: (i) vein formation and alteration of preimpact Matijevic formation rocks, (ii) low-water/rock alteration along the disconformity between the Matijevic and Shoemaker formations, (iii) alteration of the Shoemaker formation along fracture zones, and (iv) differential mobilization of Fe and Mn, and CaSO4-vein formation in the Grasberg and Shoemaker formations. Episodes (ii) and (iii) possibly occurred together, but (i) and (iv) are distinct from either of these. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113973
Appears in Collections:气候减缓与适应

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作者单位: Mail code XI3, Astromaterials Research Office, NASA/Johnson Space Center, Houston, TX, United States; Department of Physics, University of Guelph, Guelph, ON, Canada; Mail code XI1, Astromaterials Research and Exploration Science Division, NASA/Johnson Space Center, Houston, TX, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Space Science Institute, Boulder, CO, United States; Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, Stirling, United Kingdom; New Mexico Museum of Natural History and Science, Albuquerque, NM, United States; Smithsonian Institution, NASM CEPS, Washington, DC, United States; Department of Earth and Planetary Sciences, Washington University in Saint Louis, Saint Louis, MO, United States; U. S. Geological Survey Astrogeology Science Center, Flagstaff, AZ, United States; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, United States; NASA/Goddard Space Flight Center, Greenbelt, MD, United States; Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg-University Mainz, Mainz, Germany; Geology Department, SUNY-Potsdam, Potsdam, NY, United States; Planetary Science Institute, Tucson, AZ, United States

Recommended Citation:
Mittlefehldt D.W.,Gellert R.,vanBommel S.,et al. Diverse Lithologies and Alteration Events on the Rim of Noachian-Aged Endeavour Crater, Meridiani Planum, Mars: In Situ Compositional Evidence[J]. Journal of Geophysical Research: Planets,2018-01-01,123(5)
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