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Weathering of Chlorite Illite Deposits in the Hyperarid Qaidam Basin: Implications to Post-Depositional Alteration on Martian Clay Minerals
Sun, Yu1; Li, Yiliang2,3; Zhang, Chaoqun1; Qin, Xiaorong4,5; Shen, Jianxun1; He, Hongping4,5; Pan, Yongxin1,5
2022-05-23
Source PublicationFRONTIERS IN ASTRONOMY AND SPACE SCIENCES
ISSN2296-987X
Volume9Pages:9
AbstractChlorite is the second-most common class of clay minerals on the Martian surface and has been found to coexist with illite in some regions. Although previous studies have paid much attention to the formation of this assemblage, the post-depositional evolution cannot be neglected because the aqueous activities may alter the mineral assemblage and distribution. Here, we report on the post-depositional weathering of lacustrine-fluvial deposits collected from yardangs and dune-covering lake beds in the western Qaidam Basin, one of the largest and highest terrestrial Mars analogs. Mineralogical analysis shows that Fe-clinochlore and illite are the main clay components deposited as detrital particles. Electron microscopic observations of small rusty concretions from yardang deposits revealed that iron was released from clinochlore and formed ferrihydrite in fractures. We suggest that the activities of ephemeral waters after the deposition provide the major source of water that influences the migration of Fe in a long-lasting hyperarid climate. A similar iron-releasing mechanism could have occurred in Nili Fossae on Mars because multiple aqueous activities have shaped the terrains where chlorite illite deposits were identified by orbital near-infrared reflectance spectroscopy. Thus, reconstruction of the aqueous history of ancient Mars from surface minerals requires consideration of post-depositional processes, since groundwater/meteoric water may continuously interact with clay mineral-bearing deposits on Mars after their formation.
Keywordchlorite illite Qaidam Basin Mars weathering
DOI10.3389/fspas.2022.875547
WOS KeywordMARS ; PRODUCTS ; PHYLLOSILICATES ; HISTORY ; ORIGIN ; ANALOG ; PLAYA ; TIBET ; WATER
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000806854200001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106037
Collection地球与行星物理院重点实验室
Corresponding AuthorSun, Yu
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
3.CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou, Peoples R China
5.Univ Chinese Acad Sci, Beijing, 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
Recommended Citation
GB/T 7714
Sun, Yu,Li, Yiliang,Zhang, Chaoqun,et al. Weathering of Chlorite Illite Deposits in the Hyperarid Qaidam Basin: Implications to Post-Depositional Alteration on Martian Clay Minerals[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2022,9:9.
APA Sun, Yu.,Li, Yiliang.,Zhang, Chaoqun.,Qin, Xiaorong.,Shen, Jianxun.,...&Pan, Yongxin.(2022).Weathering of Chlorite Illite Deposits in the Hyperarid Qaidam Basin: Implications to Post-Depositional Alteration on Martian Clay Minerals.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,9,9.
MLA Sun, Yu,et al."Weathering of Chlorite Illite Deposits in the Hyperarid Qaidam Basin: Implications to Post-Depositional Alteration on Martian Clay Minerals".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 9(2022):9.
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