globalchange  > 气候减缓与适应
DOI: 10.1038/s41561-017-0015-2
论文题名:
The Martian subsurface as a potential window into the origin of life
作者: Michalski J.R.; Onstott T.C.; Mojzsis S.J.; Mustard J.; Chan Q.H.S.; Niles P.B.; Johnson S.S.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2018
卷: 11, 期:1
起始页码: 21
结束页码: 26
语种: 英语
Scopus关键词: early Earth ; geological record ; hydrothermal system ; laboratory method ; Mars ; Martian atmosphere ; origin of life
英文摘要: Few traces of Earth's geologic record are preserved from the time of life's emergence, over 3,800 million years ago. Consequently, what little we understand about abiogenesis - the origin of life on Earth - is based primarily on laboratory experiments and theory. The best geological lens for understanding early Earth might actually come from Mars, a planet with a crust that's overall far more ancient than our own. On Earth, surface sedimentary environments are thought to best preserve evidence of ancient life, but this is mostly because our planet has been dominated by high photosynthetic biomass production at the surface for the last ~2,500 million years or more. By the time oxygenic photosynthesis evolved on Earth, Mars had been a hyperarid, frozen desert with a surface bombarded by high-energy solar and cosmic radiation for more than a billion years, and as a result, photosynthetic surface life may never have occurred on Mars. Therefore, one must question whether searching for evidence of life in Martian surface sediments is the best strategy. This Perspective explores the possibility that the abundant hydrothermal environments on Mars might provide more valuable insights into life's origins. © 2017 Macmillan Publishers Limited, part of Springer Nature. 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/105636
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Earth Sciences, Laboratory for Space Research, University of Hong Kong, Pokfulam, Hong Kong, Hong Kong; Department of Geosciences, Princeton University, Princeton, NJ, United States; Department of Geological Sciences, University of Colorado, Boulder, CO, United States; Collaborative for Research in Origins (CRiO), John Templeton Foundation - FfAME Origins Program, Boulder, CO, United States; Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest, Hungary; Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI, United States; Astromaterials Research and Exploration Science Directorate, NASA Johnson Space Center, Houston, TX, United States; Department of Biology, Georgetown University, Washington, DC, United States; Science, Technology, and International Affairs Program, Georgetown University, Washington, DC, United States

Recommended Citation:
Michalski J.R.,Onstott T.C.,Mojzsis S.J.,et al. The Martian subsurface as a potential window into the origin of life[J]. Nature Geoscience,2018-01-01,11(1)
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