Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars

doi:10.1089/ast.2021.0196

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 地外海洋系统研究室

	Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars
	Chen, Yan 1; Sun, Yu 1; Liu, Li 1,4; Shen, Jianxun 1; Qu, Yuangao 3; Pan, Yongxin 1; Lin, Wei 1,2
刊名	ASTROBIOLOGY
	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
通讯作者	Lin, Wei(weilin@mail.iggcas.ac.cn)
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
出版者	MARY ANN LIEBERT, INC
WOS记录号	WOS:000904606200001
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/10052]
专题	深海科学研究部_地外海洋系统研究室
通讯作者	Lin, Wei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Bei Tu Cheng Xi Rd, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, 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.