In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
| Autor: | I. Tonguç Uysal, Jian-xin Zhao, Kai Luo, Jiawei Zhang, Yuexing Feng, Ai Nguyen, Jia-Xi Zhou |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Mineralization (geology) Dolomite Geochemistry Isotope Geochemistry 02 engineering and technology Thermochronology Hydrothermal circulation Article 03 medical and health sciences chemistry.chemical_compound lcsh:Science Calcite Multidisciplinary 021001 nanoscience & nanotechnology Cretaceous 030104 developmental biology chemistry Isotope geochemistry Ore Geochemistry Geochemistry Methods lcsh:Q 0210 nano-technology Cenozoic Geology |
| Zdroj: | iScience iScience, Vol 23, Iss 10, Pp 101575-(2020) |
| ISSN: | 2589-0042 |
| Popis: | Summary Accurately determining the age of hydrothermal ore deposits is difficult, because of lack of suitable mineral chronometers and techniques. Here we present the first LA-MC-ICPMS U-Pb age of carbonates from hydrothermal Sb deposits. Three stages of hydrothermal carbonates from the giant South China Sb metallogenic belt were identified: (1) pre-ore dolomite (Dol-I), (2) syn-ore calcite (Cal-II), and (3) post-ore calcite (Cal-III). The U and Pb isotopic data show that Cal-II yielded a lower intercept age of 115.3 ± 1.5 Ma (MSWD = 2.0), suggesting a Sb mineralization that corresponds to an extension event occurred during the early Cretaceous in South China. Although Cal-III yielded an age of 60.0 ± 0.9 Ma (MSWD = 1.5), indicating a potential tectonothermal event occurred in this belt during the early Cenozoic. Hence, in situ U-Pb dating of calcite offers a new way to determine the age of hydrothermal ore deposits. Graphical Abstract Highlights • The syn-ore calcite yielded an in situ U-Pb age of 115.3 ± 1.5 Ma • The South China antimony mineralization occurred during the early Cretaceous • Calcite in situ U-Pb dating can determine the timing of hydrothermal mineralization Thermochronology; Isotope Geochemistry; Geochemistry Methods; Ore Geochemistry |
| Databáze: | OpenAIRE |
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