globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2021.116854
论文题名:
Inverted channel belts and floodplain clays to the East of Tempe Terra, Mars: Implications for persistent fluvial activity on early Mars
作者: Liu Z.; Liu Y.; Pan L.; Zhao J.; Kite E.S.; Wu Y.; Zou Y.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 562
语种: 英语
中文关键词: early Mars ; floodplain clays ; fluvial activity ; sinuous ridges ; warming events
英文关键词: Banks (bodies of water) ; Deposits ; Floods ; Stratigraphy ; Bearing materials ; Critical constraints ; Dichotomy boundary ; Lowland plains ; Meandering rivers ; Morphological features ; Planetary science ; Unsolved problems ; Rivers ; authigenesis ; channel flow ; floodplain ; Mars ; Martian atmosphere ; satellite data ; satellite imagery ; smectite
英文摘要: The climate on early Mars is one of the major unsolved problems in planetary science. It is unclear whether early Mars was warm and wet or cold and icy. Morphological features on Mars such as sinuous ridges could provide critical constraints to address this issue. Here we investigate several sinuous ridges to the east of Tempe Terra, located at the dichotomy boundary of the highland terrain and lowland plains and find these ridges may have recorded persistent fluvial activity on early Mars. Our analysis indicates that these ridges may represent exhumation of the channel belts and overbank deposits formed from meandering rivers over significant geologic time. Layered smectite-bearing minerals are distributed along the flank of the ridges, and could be detrital or authigenic floodplain clays. Our interpretation of the stratigraphic relationships indicates that the layered smectite-bearing materials lie between channel belt deposits, which has rarely been previously reported on Mars and supports the floodplain interpretation. Our results suggest a persistent warm period, perhaps triggered by volcanism, impacts, and/or variations in planetary obliquity, that persisted for a geologically significant interval (tens of thousands of years) during the Noachian period of Mars. © 2021 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165573
Appears in Collections:气候变化与战略

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作者单位: State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Science, Beijing, 100049, China; Center for Excellence in Comparative Planetology, Chinese Academy of Sciences, Hefei, 230026, China; University of Copenhagen, GLOBE Institute, Center for Star and Planet Formation, Denmark; Planetary Science Institute, China University of Geosciences, Wuhan, 430074, China; University of Chicago, Chicago, IL 6063, United States

Recommended Citation:
Liu Z.,Liu Y.,Pan L.,et al. Inverted channel belts and floodplain clays to the East of Tempe Terra, Mars: Implications for persistent fluvial activity on early Mars[J]. Earth and Planetary Science Letters,2021-01-01,562
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