| Formation of the Micro-Disseminated Strata-bound Gold Deposits,With Special Reference to Structural Evolution,Miliang Area,Zhen‘an County,Shaanxi Province,China |
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| 摘 要： | Based on detailed geologic study,the important role of structuring in the formation of gold deposits in the area is discussed with special reference to structural evolution,Syngenetic faulting contemporaneous with tectonic-volcanic events is thought to be responsible for providing the ore-forming material at depth.The lithofacies formed by highly alternating deposition of terrestrial and carbonate detritus is chemically characterized by the assemblage of Au-Sb-As,constituteing a favorable source bed for the activation and enrichment of gold.This gold source bed has undergone four major stages of structural deformation,accompanied by multi-staged alteration and mineralization.
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| 关 键 词： | 金矿床 陕西 延展性 脆性 地质构造 成矿作用 |
Formation of the micro-disseminated strata-bound gold deposits,with special reference to structural evolution,Miliang area,Zhen’an County,Shaanxi Province,China |
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| Authors: | Zhang Fuxin Ma Jianqin Wei Kuangyi |
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| Institution: | (1) Department of Geology, Northwest University, 710069 Xi’an;(2) Xi’an College of Geology, 710054 Xi’an |
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| Abstract: | Based on detailed geologic study, the important role of structuring in the formation of gold deposits in the area is discussed
with special reference to structural evolution. Syngenetic faulting contemporaneous with tectonic-volcanic events is thought
to be responsible for providing the ore-forming material at depth. The lithofacies formed by highly alternating deposition
of terrestrial and carbonate detritus is chemically characterized by the assemblage of Au−Sb−As, constituting a favorable
source bed for the activation and enrichment of gold. This gold source bed has undergone four major stages of structural deformation,
accompanied by multi-staged alteration and mineralization.
This project was finantially supported by the Gold Head Quarters of the Chinese People’s Armed Forces and the Provincial Natural
Science Foundation of Shaanxi, China. |
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| Keywords: | micro-disseminated strata-bound gold deposit syngenetic fault ductile-brittle shearing Miliang area of Shaanxi Province |
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