中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The Zaozigou orogenic gold-antimony deposit, West Qinling Orogen, China: Structural controls on multiple mineralization events

文献类型:期刊论文

作者Kun-Feng Qiu; Jun Deng; Hao-Cheng Yu; Troy Rasbury; Yan-Wen Tang; Rui Zhu; Peng-Cong Zhang; Richard Goldfarb
刊名GSA Bulletin
出版日期2024
卷号136期号:9-10页码:4218-4232
DOI10.1130/B37029.1
英文摘要

Orogenic gold deposits are generally thought to represent one perhaps protracted event. However, recent research on orogenic gold deposits increasingly offers evidence for some deposits forming through multiple and clearly discreet hydrothermal episodes. The giant Zaozigou orogenic Au-Sb deposit in the Triassic to Cretaceous West Qinling Orogen, central China, includes both steeply dipping and gently dipping orebodies. The two distinct mineralization styles provide a valuable setting for investigating a multiple mineralization model by integrating structural analysis within a robust geochronological framework. Through fieldwork and geochronology, we define a progression of major tectonic events in the area of the Zaozigou deposit. The deposit is hosted within a well-bedded sequence of Early Triassic metasedimentary rocks of the South Qinling Terrane. Pre-mineralization E-W shortening (D1) during subduction of the Mianlue oceanic slab include folding with resulting axial planes striking N-S, emplacement of Triassic ENE-striking and WNW-striking dacite dikes accompanied by Middle Triassic greenschist facies metamorphism. Late Triassic gold-stibnite quartz vein and disseminated mineralization formed along ENE-striking and steeply dipping D2 brittle to ductile sinistral faults. Their orientations suggest a link to the regional NNE-SSW maximum principal stress coinciding with transpression caused by the Late Triassic collision between the South China Block and South Qinling Terrane. Overprinting Early Cretaceous quartz-stibnite veins developed along gently dipping (20° to 40°) brittle D3 normal fault zones, which exhibit a NE-SW minimum principal stress. This younger deformation event is interpreted to be related to the Early Cretaceous tectonic transition from shortening to extension of the West Qinling Orogen. Therefore, the Zaozigou deposit reveals a model of multiple orogenic gold mineralizing events, with migration of hydrothermal fluids during discrete deformation episodes and the resulting formation of a single composite deposit formed along overprinting structures at separate times of orogenesis.

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语种英语
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专题地球化学研究所_矿床地球化学国家重点实验室
作者单位1.State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources, Frontiers Science Center for Deep-time Digital Earth, China University of Geosciences, Beijing 100083, China
2.Geological Research Institute of Shandong Gold Group Co., Ltd., Jinan 250013, China
3.Department of Geosciences, Facility for Isotope Research and Student Training, Stony Brook University, 100 Nichols Road, Stony Brook, New York 11794, USA
4.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
5.Zhaojin Mining Industry Co., Ltd., Zhaoyuan 265400, China
6.Center for Mineral Resources Science, Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, Colorado 80401, USA
推荐引用方式
GB/T 7714
Kun-Feng Qiu,Jun Deng,Hao-Cheng Yu,et al. The Zaozigou orogenic gold-antimony deposit, West Qinling Orogen, China: Structural controls on multiple mineralization events[J]. GSA Bulletin,2024,136(9-10):4218-4232.
APA Kun-Feng Qiu.,Jun Deng.,Hao-Cheng Yu.,Troy Rasbury.,Yan-Wen Tang.,...&Richard Goldfarb.(2024).The Zaozigou orogenic gold-antimony deposit, West Qinling Orogen, China: Structural controls on multiple mineralization events.GSA Bulletin,136(9-10),4218-4232.
MLA Kun-Feng Qiu,et al."The Zaozigou orogenic gold-antimony deposit, West Qinling Orogen, China: Structural controls on multiple mineralization events".GSA Bulletin 136.9-10(2024):4218-4232.

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来源:地球化学研究所

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