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Martian hydrothermal fluids recorded in the Sm-Nd isotopic systematics of apatite in regolith breccia meteorites
Shang, Sheng1,2; Hui, Hejiu1,2,3; Yang, Yueheng4; Chen, Tianyu1,2
2022-03-01
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
Volume581Pages:12
AbstractThe observations of Martian orbiters and rovers have suggested that there were fluids on the surface of early Mars. However, the geochemical properties of those fluids are unclear. The Martian regolith breccia meteorites (MRB), the source materials of which are thought to have formed at 4.4 Ga, may have recorded interactions with fluids on Mars. Here, we have analyzed the in situ Sm-Nd isotopic compositions and trace element contents of apatite in MRB and have obtained a Sm-Nd isochron age of 1490 +/- 480 Ma. This young age indicates that the MRB apatites were altered by fluids and have exchanged trace elements with fluids. The very negative initial epsilon Nd-143, combined with the previously reported positive delta D and delta Cl-37 in the MRB apatites, indicate that Martian fluids originated from a geochemically enriched reservoir in the crust. The large ranges of rare earth element abundance (Sigma REE) and of the chondrite normalized ratio of La and Yb [(La/Yb)(N)] indicate the chemical complexity of the fluids that interacted with the apatites in the MRB. The apatite REE compositions were used to further determine the pH values of Martian fluids equilibrated with the MRB apatites, which varied from similar to 3 to similar to 8. The apatite X-site Cl contents indicate that the Cl contents in Martian fluids in equilibrium with the MRB apatites at 400 degrees C and 1 bar could be up to 1857 ppm, within the range of terrestrial hydrothermal fluids. Combined with previously reported geochemical data from Martian meteorites, our study suggests that fluids may have been present throughout the early geological history of Mars. (C) 2022 Elsevier B.V. All rights reserved.
KeywordMartian phosphate Martian regolith breccia Sm-Nd age hydrothermal fluids Mars
DOI10.1016/j.epsl.2022.117413
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA)
WOS KeywordNORTHWEST AFRICA 7034 ; RARE-EARTH-ELEMENTS ; LA-ICP-MS ; U-PB ; GEOTHERMAL WATERS ; TRACE-ELEMENT ; RB-SR ; MARS ; MINERALS ; ZIRCON
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[42125303] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; China National Space Administration (CNSA)[D020205]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; China National Space Administration (CNSA) ; China National Space Administration (CNSA)
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000783030300005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105104
Collection岩石圈演化国家重点实验室
Corresponding AuthorHui, Hejiu
Affiliation1.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
2.Nanjing Univ, Lunar & Planetary Sci Inst, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China
3.CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Shang, Sheng,Hui, Hejiu,Yang, Yueheng,et al. Martian hydrothermal fluids recorded in the Sm-Nd isotopic systematics of apatite in regolith breccia meteorites[J]. EARTH AND PLANETARY SCIENCE LETTERS,2022,581:12.
APA Shang, Sheng,Hui, Hejiu,Yang, Yueheng,&Chen, Tianyu.(2022).Martian hydrothermal fluids recorded in the Sm-Nd isotopic systematics of apatite in regolith breccia meteorites.EARTH AND PLANETARY SCIENCE LETTERS,581,12.
MLA Shang, Sheng,et al."Martian hydrothermal fluids recorded in the Sm-Nd isotopic systematics of apatite in regolith breccia meteorites".EARTH AND PLANETARY SCIENCE LETTERS 581(2022):12.
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