Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars
文献类型：期刊论文
| 作者 | Chen, Yan2; Sun, Yu2; Liu, Li2,3; Shen, Jianxun2; Qu, Yuangao1; Pan, Yongxin2; Lin, Wei2,4 |
| 刊名 | ASTROBIOLOGY
 |
| 出版日期 | 2022-12-27 |
| 页码 | 11 |
| 关键词 | Carbonate nodules Western Qaidam Basin Mars analog FTIR Biosignatures |
| ISSN号 | 1531-1074 |
| DOI | 10.1089/ast.2021.0196 |
| 英文摘要 | The search for organic matter on Mars is one of the major objectives of Mars exploration. However, limited detection of organic signals by Mars rovers to date demands further investigation on this topic. The Curiosity rover recently discovered numerous nodules in Gale Crater on Mars. These nodules have been considered to precipitate in the neutral-to-alkaline and saline diagenetic fluids and could be beneficial for organic preservation. Here, we examine this possibility by studying the carbonate nodules in the western Qaidam Basin, NW China, one of the terrestrial analog sites for Mars. Fourier transform infrared spectra of the carbonate nodules reveal that the aliphatic and aromatic molecules can be readily preserved inside nodules in Mars-like environments. The chain-branching index of the Qaidam nodules suggests that the diagenetic fluids where nodules precipitated were able to support diverse microbial communities that could vary with the water salinity. Findings of this study provide new perspectives on the astrobiological significance of nodules in Gale Crater and the further detection of organic matter on Mars. |
| WOS关键词 | ORGANIC-MATTER ; GALE CRATER ; MICROBIAL COMMUNITIES ; CONCRETIONS ; FTIR ; SPECTROSCOPY ; MUDSTONES ; ANCIENT ; GROWTH ; ANALOG |
| WOS研究方向 | Astronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000904606200001 |
| 出版者 | MARY ANN LIEBERT, INC |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106943]  |
| 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.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Bei Tu Cheng Xi Rd, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yan,Sun, Yu,Liu, Li,et al. Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars[J]. ASTROBIOLOGY,2022:11. |
| APA | Chen, Yan.,Sun, Yu.,Liu, Li.,Shen, Jianxun.,Qu, Yuangao.,...&Lin, Wei.(2022).Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars.ASTROBIOLOGY,11. |
| MLA | Chen, Yan,et al."Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars".ASTROBIOLOGY (2022):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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