DOI: 10.1002/2014GL059423
论文题名: Phyllosilicate and hydrated silica detections in the knobby terrains of Acidalia Planitia, northern plains, Mars
作者: Pan L. ; Ehlmann B.L.
刊名: Geophysical Research Letters
ISSN: 0094-10235
EISSN: 1944-9966
出版年: 2014
卷: 41, 期: 6 起始页码: 1890
结束页码: 1898
语种: 英语
英文关键词: hydrated silica
; Mars mineralogy
; Northern Plains
; phyllosilicates
Scopus关键词: Minerals
; Silica
; Silicates
; Stratigraphy
; Vapors
; Chemical alteration
; Compact reconnaissance
; Hydrated silica
; Imaging spectrometers
; Northern Plains
; phyllosilicates
; Stratigraphic units
; Surface alteration
; Hydration
; chemical alteration
; data acquisition
; detection method
; hydration
; iron
; magnesium
; Mars
; mineralogy
; phyllosilicate
; silica
; terrain
英文摘要: Here we report detections of Fe/Mg phyllosilicates and hydrated silica in discrete stratigraphic units within the knobby terrains of Acidalia Planitia made using data acquired by Compact Reconnaissance Imaging Spectrometer for Mars. Fe/Mg phyllosilicates are detected in knobs that were eroded during southward retreat of the dichotomy boundary. A second later unit, now eroded to steep-sided platforms embaying the knobs, contains hydrated silica, which may have formed via localized vapor weathering, thin-film leaching, or transient water that resulted in surface alteration. These are then overlain by smooth plains with small cones, hypothesized to be mud volcanoes which previous studies have shown to have no hydrated minerals. In spite of Acidalia's location within the putative northern ocean, collectively, the data record a history of aqueous processes much like that in the southern highlands with progressively less intensive aqueous chemical alteration from the Noachian to Amazonian. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896587554&doi=10.1002%2f2014GL059423&partnerID=40&md5=c8767442bc0195a6234ebaaf42161079
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7499
Appears in Collections: 气候减缓与适应
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作者单位: Division of Geological and Planetary Science, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Pan L.,Ehlmann B.L.. Phyllosilicate and hydrated silica detections in the knobby terrains of Acidalia Planitia, northern plains, Mars[J]. Geophysical Research Letters,2014-01-01,41(6).