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Geochronology of the Zhesang gold deposit and mafic rock in Funing County of Yunnan Province, with special reference to the dynamic background of Carlin-type gold deposits in the Dian-Qian-Gui region TEXT SIZE: A A A
The Dian-Qian-Gui region, commonly referred as the Golden Triangle' in SW China, hosts many Carlin-type gold deposits. Previously, the relationship between gold mineralization and magmatism has not been well constrained. This paper reports a geochronological study on the Zhesang Carlin-type gold deposit and mafic intrusion in the Funing County of Yunnan Province, China. Dating by Ar-40/Ar-39 of hydrothermal sericite grains collected from altered rocks near auriferous quartz veins at Zhesang gold deposit yielded a plateau age of 215. 3 +/- 1. 9Ma, which is highly consistent with zircon U-Pb age (215 +/- 5Ma) of the mafic rock in a nearby area. It is inferred that there might exist contemporaneous buried intrusions in the Zhesang deposit. The deep-seated magma, resulted from the post-collision of the Indochina Block with the South China Block, triggered fluids of possibly meteoric origin to circulate and leach out ore-forming elements from sedimentary rocks to form the Zhesang Carlin-type gold deposit.

Publication name

 ACTA PETROLOGICA SINICA, 32 (11):3331-3342; 2016

Author(s)

 Pi QiaoHui; Hu RuiZhong; Peng KeQiang; Wu JianBiao; Wei ZhaoWen; Huang Yong

Corresponding author 

 HU Ruizhong
 huruizhong@vip.gyig.ac.cn
Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Peoples R China.

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