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Exhumation and preservation conditions of Suyunhe porphyry molybdenum deposit in the West Junggar, Xinjiang (NW China) : Constraints from the fission track and (U-Th )/He thermochronology
Wang, Y. M.1,2; Yin, J. Y.2; Yuan, C.3; Xiao, W. J.4,5; Chen, W.2; Cai, K. D.1; Yang, X. Y.1,2; Tao, Z. L.1,2
2021-08-01
Source PublicationACTA PETROLOGICA SINICA
ISSN1000-0569
Volume37Issue:8Pages:2547-2561
AbstractPorphyry deposit is a kind of epithermal deposit, which is mostly formed in the convergent plate boundary. However, ancient porphyry deposit was often destroyed and disappeared due to later tectonic or exhumation. Therefore, it is vital to reveal the exhumation and uplift process after mineralization for further understanding the preservation conditions and regional prospecting prospects of the deposits. Suyunhe porphyry molybdenum deposit in the west part of the West Junggar, Xinjiang was formed in Late Carboniferous. It is a well-preserved porphyry deposit, which provides a natural laboratory for us to study the preservation conditions of ancient porphyry metallogenic system. In this paper, we present new zircon and apatite fission track ( ZET and AFT) and zircon ( UTh)/He ( ZEle) data for the Suyunhe porphyry molybdenum deposit. Combined with thermal modeling inversion, we suggest that the hydrothermal alteration process of the Suyunhe porphyry molybdenum deposit lasted at least 55Myr. It underwent a thick burial (5. 2 similar to 8. 1 km) sediments from Early Permian to Middle Triassic. The deposit experienced a rapid exhumation stage from Middle Triassic to Early Cretaceous (240 similar to 120Ma). The exhumation rate was 49. 0 similar to 56. 7m/Myr, and the corresponding denudation amount was 7. 4 similar to 9. 2km. After the Cretaceous (120Ma) , it entered a slow exhumation stage with an exhumation rate of 6. 7 similar to 21. 7m/Myr and exhumation amount of 0. 8 similar to 2. 6km. Among them, the Middle Triassic to Early Cretaceous rapid exhumation was not the product of far-field effects ( e. g. , the collision between Qiangtang and Kunlun-Qaidam or the collision between Qiangtang and Lhasa) , but related to the activation of strike slip faults in the region. Therefore, early thick burial and later dry climate and slow exhumation provided key conditions for the preservation of the Carboniferous Suyunhe porphyry molybdenum deposit.
KeywordLow temperature thermochronology Porphyry molybdenum deposit Uplift history Preservation conditions West Junggar metallogenic belt
DOI10.18654/1000-0569/2021.08.18
WOS KeywordZIRCON U-PB ; INTRAOCEANIC SUBDUCTION ; GEODYNAMIC EVOLUTION ; TECTONIC HISTORY ; ORE-DEPOSITS ; MO DEPOSIT ; GEOCHRONOLOGY ; GEOCHEMISTRY ; DEFORMATION ; TEMPERATURE
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000735639300018
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/103956
Collection岩石圈演化国家重点实验室
Corresponding AuthorYin, J. Y.
Affiliation1.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
2.Chinese Acad Geol Sci, Inst Geol, MNR Key Lab Deep Earth Dynam, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang, Y. M.,Yin, J. Y.,Yuan, C.,et al. Exhumation and preservation conditions of Suyunhe porphyry molybdenum deposit in the West Junggar, Xinjiang (NW China) : Constraints from the fission track and (U-Th )/He thermochronology[J]. ACTA PETROLOGICA SINICA,2021,37(8):2547-2561.
APA Wang, Y. M..,Yin, J. Y..,Yuan, C..,Xiao, W. J..,Chen, W..,...&Tao, Z. L..(2021).Exhumation and preservation conditions of Suyunhe porphyry molybdenum deposit in the West Junggar, Xinjiang (NW China) : Constraints from the fission track and (U-Th )/He thermochronology.ACTA PETROLOGICA SINICA,37(8),2547-2561.
MLA Wang, Y. M.,et al."Exhumation and preservation conditions of Suyunhe porphyry molybdenum deposit in the West Junggar, Xinjiang (NW China) : Constraints from the fission track and (U-Th )/He thermochronology".ACTA PETROLOGICA SINICA 37.8(2021):2547-2561.
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