Preservation of Organic Matter in Aqueous Deposits and Soils Across the Mars-Analog Qaidam Basin, NW China: Implications for Biosignature Detection on Mars
文献类型：期刊论文
| 作者 | Chen, Yan2; Shen, Jianxun2; Liu, Li1,2; Sun, Yu2; Pan, Yongxin1,2; Lin, Wei2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 127期号:12页码:14 |
| ISSN号 | 2169-9097 |
| DOI | 10.1029/2022JE007418 |
| 英文摘要 | A variety of aqueous deposits and soils from gullies, fluvial channels, mountain slopes, alluvial fans, playas, polygons, and yardangs have been found on Mars. However, the occurrence of sedimentary organic matter (SOM) in these landscapes under hyperarid and strongly radiative conditions has yet to be fully assessed. With various desiccated landforms analogous to those on Mars, the Qaidam Basin in northwestern China is considered a promising hyperarid Martian analog. Here, aqueous deposits and soils from nine landforms across the extremely dry northwestern Qaidam and from four landforms across the dry southeastern Qaidam were sampled and investigated. Our results reveal that landform and moisture are important controls on organic carbon distribution across the Qaidam Basin, while sedimentary origin has a dominant effect in the extremely dry northwestern Qaidam. Combined with previous studies, low organic carbon contents of soils in the extremely dry northwestern Qaidam suggest possibly low rates of microbial carbon input and of organic carbon degradation in Mars-like environments. High organic carbon contents of aqueous deposits together with increasing trends along rivers indicate preservation of relic SOM and possibly slow degradation rates of organic matter as compared to their exposure timescale. Moreover, soils from the distal alluvial fan are found to favor the concentration of pedogenic organic carbon as compared to those from other landforms in the dry southeastern Qaidam and from all landforms in the extremely dry northwest. This suggests that subsoils in the distal fans are promising candidate targets for biosignature detection on Mars. |
| WOS关键词 | ATACAMA DESERT ; GLOBAL DISTRIBUTION ; GALE CRATER ; CARBON ; EVOLUTION ; VALLEY ; MICROORGANISMS ; TERRESTRIAL ; PALEOSOLS ; SITE |
| 资助项目 | National Natural Science Foundation of China (NSFC)[41621004] ; National Natural Science Foundation of China (NSFC)[42102341] ; Key Research Program of the Chinese Academy of Sciences[ZDBS-SSW-TLC001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB41010403] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences[IGGCAS-201904] ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences[IGGCAS-202102] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000908346300015 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106896]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Lin, Wei |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yan,Shen, Jianxun,Liu, Li,et al. Preservation of Organic Matter in Aqueous Deposits and Soils Across the Mars-Analog Qaidam Basin, NW China: Implications for Biosignature Detection on Mars[J]. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,2022,127(12):14. |
| APA | Chen, Yan,Shen, Jianxun,Liu, Li,Sun, Yu,Pan, Yongxin,&Lin, Wei.(2022).Preservation of Organic Matter in Aqueous Deposits and Soils Across the Mars-Analog Qaidam Basin, NW China: Implications for Biosignature Detection on Mars.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,127(12),14. |
| MLA | Chen, Yan,et al."Preservation of Organic Matter in Aqueous Deposits and Soils Across the Mars-Analog Qaidam Basin, NW China: Implications for Biosignature Detection on Mars".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 127.12(2022):14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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