DOI: 10.1002/2013GL059097
论文题名: Wind-blown sandstones cemented by sulfate and clay minerals in Gale Crater, Mars
作者: Milliken R.E. ; Ewing R.C. ; Fischer W.W. ; Hurowitz J.
刊名: Geophysical Research Letters
ISSN: 0094-10353
EISSN: 1944-10084
出版年: 2014
卷: 41, 期: 4 起始页码: 1149
结束页码: 1154
语种: 英语
英文关键词: clay
; CRISM
; eolian
; Gale Crater
; Mars
; sandstone
Scopus关键词: Clay
; Clay minerals
; Sedimentology
; Stratigraphy
; CRISM
; Depositional environment
; Environmental history
; eolian
; Gale Crater
; Mars
; Specific environmental conditions
; Stratigraphic records
; Sandstone
; cement
; clay mineral
; depositional environment
; eolian deposit
; Mars
; salt
; sandstone
; stabilization
; sulfate
; topography
英文摘要: Gale Crater contains Mount Sharp, a ~5 km thick stratigraphic record of Mars' early environmental history. The strata comprising Mount Sharp are believed to be sedimentary in origin, but the specific depositional environments recorded by the rocks remain speculative. We present orbital evidence for the occurrence of eolian sandstones within Gale Crater and the lower reaches of Mount Sharp, including preservation of wind-blown sand dune topography in sedimentary strata - a phenomenon that is rare on Earth and typically associated with stabilization, rapid sedimentation, transgression, and submergence of the land surface. The preserved bedforms in Gale are associated with clay minerals and elsewhere accompanied by typical dune cross stratification marked by bounding surfaces whose lateral equivalents contain sulfate salts. These observations extend the range of possible habitable environments that may be recorded within Gale Crater and provide hypotheses that can be tested in situ by the Curiosity rover payload. Key Points Lower Mt. Sharp in Gale Crater exhibits evidence for wind-blown sandstones Preserved dune topography is indicative of specific environmental conditions Some preserved dunes contain clays, possibly as authigenic cements ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894252690&doi=10.1002%2f2013GL059097&partnerID=40&md5=70fa518e070430e71891772bb0ff0060
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7617
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological Sciences, Brown University, Providence RI, United States
Recommended Citation:
Milliken R.E.,Ewing R.C.,Fischer W.W.,et al. Wind-blown sandstones cemented by sulfate and clay minerals in Gale Crater, Mars[J]. Geophysical Research Letters,2014-01-01,41(4).