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Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China
Zhu, J; Li, Z; Lin, G; Zeng, Q; Zhou, Y; Yi, J; Gong, G; Chen, G; lizian@gig.ac.cn
2014
发表期刊GEOFLUIDS
ISSN1468-8115
卷号14期号:2页码:221-233
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.
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
关键词Mylonitization Numerical Simulation Structure-fluid Mineralization The Hetai Gold Deposit
学科领域Geochemistry & Geophysics ; Geology
资助者Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401]
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收录类别sci
资助项目海洋地质
资助者Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401] ; Chinese NSFC [41172082]; Chinese Ministry of Science and Technology [2009CB219401]
WOS记录号WOS:000335397800008
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10625
专题中科院边缘海地质重点实验室
通讯作者lizian@gig.ac.cn
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GB/T 7714
Zhu, J,Li, Z,Lin, G,et al. Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China[J]. GEOFLUIDS,2014,14(2):221-233.
APA Zhu, J.,Li, Z.,Lin, G.,Zeng, Q.,Zhou, Y.,...&lizian@gig.ac.cn.(2014).Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China.GEOFLUIDS,14(2),221-233.
MLA Zhu, J,et al."Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit, west Guangdong, China".GEOFLUIDS 14.2(2014):221-233.
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