Geology, geochemistry and ore genesis of the Wenyu gold deposit,   Xiaoqinling gold field, Qinling Orogen, southern margin of North China   Craton

doi:10.1016/j.oregeorev.2013.12.001

CORC > 北京大学 > 地球与空间科学学院

	Geology, geochemistry and ore genesis of the Wenyu gold deposit, Xiaoqinling gold field, Qinling Orogen, southern margin of North China Craton
	Zhou, Zhen-Ju ; Chen, Yan-Jing ; Jiang, Shao-Yong ; Zhao, Hai-Xiang ; Qin, Yan ; Hu, Chun-Jie
刊名	ore geology reviews
	2014
关键词	Wenyu orogenic gold deposit Fluid inclusion Isotope geochemistry Xiaoqinling gold field Qinling Orogen North China Craton ABITIBI GREENSTONE-BELT O ISOTOPE GEOCHEMISTRY FLUID INCLUSION CHARACTERISTICS ZHAIWA MO-CU HYDROTHERMAL FLUIDS CENTRAL VICTORIA FORMING FLUIDS MASS-TRANSFER VEIN NETWORK COLUMBIA SUPERCONTINENT
DOI	10.1016/j.oregeorev.2013.12.001
英文摘要	The Wenyu giant gold deposit is hosted in the Precambrian Taihua Supergroup metamorphic rocks within the Xiaoqinling terrane (Qinling Orogen), on the southern margin of the North China Craton. The mineralization can be divided into three stages: quartz-pyrite veins early, quartz-sulfide veins middle (main), and carbonate-quartz veinlets late, with gold being mainly introduced in main stage. Quartz formed in two earlier stages contains three compositional types of fluid inclusions, i.e. pure CO2, CO2-H2O and NaCl-H2O, but the late-stage minerals only contain the NaCl-H2O inclusions. The inclusions in quartz formed in the early, main and late stages yield total homogenization temperatures of 262-417 degrees C, 236-407 degrees C and 114-239 degrees C, respectively, with salinities no higher than 13 wt.% NaCl equiv. Trapping pressures estimated from CO2-H2O inclusions are 139-399 MPa and 111-316 MPa in the early and main stages, corresponding to mineralization depths of 14 km and 11 km, respectively. Fluid boiling and mixing caused rapid precipitation of sulfides and native Au. Through boiling and inflow of meteoric water, the ore-forming fluid system evolved from CO2-rich to CO2-poor in composition, and from metamorphic to meteoric, as indicated by decreasing delta O-18(water) values from early to late. The carbon, sulfur and lead isotope compositions suggest the hostrocks within the Taihua Supergroup to be a significant source of ore metals. Integrating the data obtained from the studies including regional geology, ore geology, fluid inclusion and C-H-O-S-Pb isotope geochemistry, we conclude that the Wenyu gold deposit was an orogenic-type system formed in the tectonic transition from compression to extension during the Jurassic-Early Cretaceous continental collision between the North China and Yangtze Cratons. (C) 2013 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000332442800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geology; Mineralogy; Mining & Mineral Processing; SCI(E); EI; 21; ARTICLE; gigyjchen@126.com; 1-20; 59
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/213953]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhou, Zhen-Ju,Chen, Yan-Jing,Jiang, Shao-Yong,et al. Geology, geochemistry and ore genesis of the Wenyu gold deposit, Xiaoqinling gold field, Qinling Orogen, southern margin of North China Craton[J]. ore geology reviews,2014.
APA	Zhou, Zhen-Ju,Chen, Yan-Jing,Jiang, Shao-Yong,Zhao, Hai-Xiang,Qin, Yan,&Hu, Chun-Jie.(2014).Geology, geochemistry and ore genesis of the Wenyu gold deposit, Xiaoqinling gold field, Qinling Orogen, southern margin of North China Craton.ore geology reviews.
MLA	Zhou, Zhen-Ju,et al."Geology, geochemistry and ore genesis of the Wenyu gold deposit, Xiaoqinling gold field, Qinling Orogen, southern margin of North China Craton".ore geology reviews (2014).