Geological and geochemical character and genesis of the Jinlongshan-Qiuling gold deposits in Qinling orogen: Metallogenic mechanism of the Qinling-pattern Carlin-type gold deposits

被引：0
|
作者：
张复新
机构：
[1] ,Department of Geology, Peking University, Beijing 100871, China
[2] Guiyang Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China Correspondence should be addressed to Chen Yanjing ,Xi’an Road Traffic University, Xi’an 710054, China
[3] Department of Geology, Northwest University, Xi’an 710069, China
来源：
Science China Earth Sciences | 2000年 / S1期
关键词：
Qinling orogen; Carlin-type gold deposit; tectonic metallogenic model; collisional orogenesis; Mesozoic;
D O I：
暂无
中图分类号：
P618.51 [金];
学科分类号：
0709 ; 081803 ;
摘要：
The Qinling Carlin-type gold deposit belt is the second largest Carlin-type gold ore concentrated area in the world and occurs in Mesozoic intracontinental collisional orogen, contrasting to the Carlin-type gold deposits in the Basin and Range province in Cenozoic active continental margin of West America. With ore-forming ages focussed at the range of 197.45-129.45 Ma, its metallogenic geodynamic background was the decornpression-pyrogenation regime at the transition stage from collisional compression to extension, indicating that gold mineralization synchronized with the Mesozoic continental collision. Geochemical studies discover that ore fluids and materials mainly came from the Hercynian-lndosinian tectonic layer. Mesozoic intracontinental subduction of Hercynian-lndosinian association along the Shuanghe-Gongguan fault led to the formation of Jinlongshan-Qiuling gold deposits. Accordingly, the tectonic metallogenic model is established for Qinling-pattern Carlin-type gold deposits.
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页码：95 / 107
页数：13
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