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学科主题: Geochemistry & Geophysics ; Geology
题名: Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China
作者: Zhu, J ; Li, Z ; Lin, G ; Zeng, Q ; Zhou, Y ; Yi, J ; Gong, G ; Chen, G
通讯作者: lizian@gig.ac.cn
关键词: mylonitization ; numerical simulation ; structure-fluid mineralization ; the Hetai gold deposit
刊名: GEOFLUIDS
发表日期: 2014
卷: 14, 期:2, 页:221-233
收录类别: sci
部门归属: [Zhu, J. ; Li, Z. ; Lin, G. ; Zeng, Q. ; Yi, J. ; Gong, G.] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China ; [Zhu, J.] Beijing Inst Geol Mineral Resources BIGM, Beijing, Peoples R China ; [Zhou, Y.] Beijing Gen Res Inst Min & Met, Beijing, Peoples R China ; [Chen, G.] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China
项目归属: 海洋地质
资助者: Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401]
摘要: The Hetai gold deposit (HGD) is a typical altered mylonite type gold mine in a ductile shear zone in western Guangdong, China. Geomechanical simulations of the HGD were carried out in this paper to examine the importance of the dilation-driven fluid circulation in gold mineralization. The results show that three evenly-spaced NNE shear zones of enhanced dilation are produced in the study area. The calculated principal compressive stress in the X direction in these zones ranges between -420 and -650MPa, in line with estimates of ore-forming pressure (fluid pressure). Ore forming fluid is focused into these features, as observed in the field. The calculated differential stress decreases from 275 similar to 350 to 148 similar to 225MPa during the formation of mylonite zones. These, together with geological structural analysis and fluid pressure measurements, indicate that the mylonitization zone can provide a place of fluid focusing and a favorable environment for gold mineralization.
原文出处: 查看原文
WOS记录号: WOS:000335397800008
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10625
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Zhu, J; Li, Z; Lin, G; Zeng, Q; Zhou, Y; Yi, J; Gong, G; Chen, G.Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China,GEOFLUIDS,2014,14(2):221-233
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