Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073388 |
Large-scale fluid-deposited mineralization in Margaritifer Terra, Mars | |
Thomas, Rebecca J.1; Potter-McIntyre, Sally L.2; Hynek, Brian M.1,3 | |
2017-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Mineral deposits precipitated from subsurface-sourced fluids are a key astrobiological detection target on Mars, due to the long-term viability of the subsurface as a habitat for life and the ability of precipitated minerals to preserve biosignatures. We report morphological and stratigraphic evidence for ridges along fractures in impact crater floors in Margaritifer Terra. Parallels with terrestrial analog environments and the regional context indicate that two observed ridge types are best explained by groundwater-emplaced cementation in the shallow subsurface and higher-temperature hydrothermal deposition at the surface, respectively. Both mechanisms have considerable astrobiological significance. Finally, we propose that morphologically similar ridges previously documented at the Mars 2020 landing site in NE Syrtis Major may have formed by similar mechanisms. Plain Language Summary Minerals laid down by fluids from the subsurface are key locations where we may detect evidence for past life on Mars. This is because the subsurface is the longest-term viable habitat on Mars and because these minerals can preserve biosignatures. We report evidence for ridges along fractures in and around craters in Margaritifer Terra. By drawing parallels with terrestrial analog environments and examining the regional context, we show that one type of ridge was most probably formed by deposition from groundwater and another type by hot or cold springs. Both types of site have considerable astrobiological significance and, indeed, so too may similar ridges at the Mars 2020 landing site in NE Syrtis Major, which may have formed in a similar way. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406257400013 |
WOS关键词 | SPRING DEPOSITS ; RIDGE NETWORKS ; ARABIA TERRA ; SYRTIS MAJOR ; FOSSIL LIFE ; HISTORY ; PHYLLOSILICATES ; CRATER ; FLOW ; EVOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25520 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 2.Southern Illinois Univ, Dept Geol, Carbondale, IL USA; 3.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Thomas, Rebecca J.,Potter-McIntyre, Sally L.,Hynek, Brian M.. Large-scale fluid-deposited mineralization in Margaritifer Terra, Mars[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(13). |
APA | Thomas, Rebecca J.,Potter-McIntyre, Sally L.,&Hynek, Brian M..(2017).Large-scale fluid-deposited mineralization in Margaritifer Terra, Mars.GEOPHYSICAL RESEARCH LETTERS,44(13). |
MLA | Thomas, Rebecca J.,et al."Large-scale fluid-deposited mineralization in Margaritifer Terra, Mars".GEOPHYSICAL RESEARCH LETTERS 44.13(2017). |
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