首页|Cooling History of Mesozoic Magmatism and Implications for Large-Scale Gold Mineralization in the Jiaodong Peninsula, East China: Constraints from T-t Paths Determined by U-Pb Thermochronology of Zircon and Apatite

Cooling History of Mesozoic Magmatism and Implications for Large-Scale Gold Mineralization in the Jiaodong Peninsula, East China: Constraints from T-t Paths Determined by U-Pb Thermochronology of Zircon and Apatite

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The Mesozoic intrusions of the Jiaodong Peninsula, eastern China, host giant gold depos-its. Understanding the genesis of these deposits requires the determination of the source of the parental auriferous fluid and the timing of gold mineralization, which are strongly influenced by the cooling/ uplift histories of the hosting intrusions. We performed an integrated U-Pb geochronology study on both zircon and apatite from four major magmatic episodes of the Jiaodong Peninsula. The zircon and apatite U-Pb ages are 156.9 ± 1.2 and 137.2 ± 2.4 Ma for the Linglong intrusion, 129.9 ± 1.0 and 125.0 ± 3.8 Ma for the Qujia intrusion, 119.5 ± 0.7 and 117.2 ± 1.8 Ma for the Liulinzhuang intrusion, 118.6 ± 1.0 and 111.6 ± 1.6 Ma for the Nansu intrusion, respectively. The coupled zircon and apatite data of these granitoids indicate a slow cooling rate (11.9 ℃/Ma) in the Late Jurassic, and rapid uplift and cooling (35.8-29.2 ℃/Ma) in the Early Cretaceous. The dramatically increased uplift and cooling peri-od in the Early Cretaceous are contemporaneous with large-scale gold mineralization in the Jiaodong Peninsula. This implies that thermal upwelling of asthenosphere and related tectonic extension played an important role in gold remobilization and precipitation.

magmatismgeochronologyzirconapatitegold depositsJiaodong Peninsula

Guangyan Zhou、Mingchun Song、Long Li、Yan Luo、D. Graham Pearson、Jianbo Zhou、Zhengjiang Ding、Xuefeng Yu、Yingxin Song、Jie Li、Shiyong Li

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Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada

Hebei Key Laboratory of Strategic Critical Mineral Resources, Hebei GEO University, Shijiazhuang 050031, China

Shandong Provincial No. 6 Exploration Institute of Geology and Mineral Resources, Weihai 264209, China

College of Earth Sciences, Jilin University, Changchun 130061, China

Ministry of Natural Resources Key Laboratory of Gold Mineralization Processes and Resources Utilization, Key Laboratory of Metallogenic-Geologic Processes and Comprehensive Utilization of Minerals Resources in Shandong Province, Shandong Institute of Geological Sciences, Jinan 250013, China

Shandong Nuclear Industry Geological Group 273, Yantai 264006, China

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Talent Research Project of Hebei ProvinceNational Natural Science Foundation of China-Shandong Joint Fund ProgramNSERC discovery grantNational Natural Science Foundation of ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science Foundation

HBQZYCXY010U2006201421030242020T1306182020M682516

2024

10.1007/s12583-023-1832-4

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(3)
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