In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt

In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt

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...

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Main Authors: Kai Luo, Jia-Xi Zhou, Yue-Xing Feng, I. Tonguc Uysal, Ai Nguyen, Jian-Xin Zhao, Jiawei Zhang
Format: Article
Language:English
Published: Elsevier 2020-10-01
Series:iScience
Subjects:
Thermochronology
Isotope Geochemistry
Geochemistry Methods
Ore Geochemistry
Online Access:http://www.sciencedirect.com/science/article/pii/S2589004220307677
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spelling doaj-904e1a77934d419b83a7dc42b05ea48a2020-11-25T03:05:58ZengElsevieriScience2589-00422020-10-012310101575In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic BeltKai Luo0Jia-Xi Zhou1Yue-Xing Feng2I. Tonguc Uysal3Ai Nguyen4Jian-Xin Zhao5Jiawei Zhang6School of Earth Sciences, Yunnan University, Kunming 650500, China; School of Earth and Environmental Sciences, the University of Queensland, Brisbane QLD 4072, AustraliaSchool of Earth Sciences, Yunnan University, Kunming 650500, China; Corresponding authorSchool of Earth and Environmental Sciences, the University of Queensland, Brisbane QLD 4072, AustraliaGeological Engineering Department, Ankara University, Gölbaşı, Ankara 06100, TurkeySchool of Earth and Environmental Sciences, the University of Queensland, Brisbane QLD 4072, AustraliaSchool of Earth and Environmental Sciences, the University of Queensland, Brisbane QLD 4072, AustraliaGuizhou Geological Survey, Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Guiyang 550081, ChinaSummary: 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.http://www.sciencedirect.com/science/article/pii/S2589004220307677ThermochronologyIsotope GeochemistryGeochemistry MethodsOre Geochemistry
collection DOAJ
language English
format Article
sources DOAJ
author Kai Luo
Jia-Xi Zhou
Yue-Xing Feng
I. Tonguc Uysal
Ai Nguyen
Jian-Xin Zhao
Jiawei Zhang
spellingShingle Kai Luo
Jia-Xi Zhou
Yue-Xing Feng
I. Tonguc Uysal
Ai Nguyen
Jian-Xin Zhao
Jiawei Zhang
In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
iScience
Thermochronology
Isotope Geochemistry
Geochemistry Methods
Ore Geochemistry
author_facet Kai Luo
Jia-Xi Zhou
Yue-Xing Feng
I. Tonguc Uysal
Ai Nguyen
Jian-Xin Zhao
Jiawei Zhang
author_sort Kai Luo
title In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
title_short In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
title_full In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
title_fullStr In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
title_full_unstemmed In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt
title_sort in situ u-pb dating of calcite from the south china antimony metallogenic belt
publisher Elsevier
series iScience
issn 2589-0042
publishDate 2020-10-01
description 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.
topic Thermochronology
Isotope Geochemistry
Geochemistry Methods
Ore Geochemistry
url http://www.sciencedirect.com/science/article/pii/S2589004220307677
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