IGGCAS OpenIR  > 地球与行星物理院重点实验室
Biosignatures Preserved in Carbonate Nodules from the Western Qaidam Basin, NW China: Implications for Life Detection on Mars
Chen, Yan1; Sun, Yu1; Liu, Li1,2; Shen, Jianxun1; Qu, Yuangao3; Pan, Yongxin1; Lin, Wei1,4
2022-12-27
Source PublicationASTROBIOLOGY
ISSN1531-1074
Pages11
AbstractThe 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.
KeywordCarbonate nodules Western Qaidam Basin Mars analog FTIR Biosignatures
DOI10.1089/ast.2021.0196
WOS KeywordORGANIC-MATTER ; GALE CRATER ; MICROBIAL COMMUNITIES ; CONCRETIONS ; FTIR ; SPECTROSCOPY ; MUDSTONES ; ANCIENT ; GROWTH ; ANALOG
Language英语
WOS Research AreaAstronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology
WOS SubjectAstronomy & Astrophysics ; Biology ; Geosciences, Multidisciplinary
WOS IDWOS:000904606200001
PublisherMARY ANN LIEBERT, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106943
Collection地球与行星物理院重点实验室
Corresponding AuthorLin, Wei
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, 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
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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.
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