Work

Re–Os isochron ages for arsenopyrite from Carlin-like gold deposits in the Yunnan–Guizhou–Guangxi “golden triangle”, southwestern China

Year: 2014

Type: article

Abstract: The Yunnan–Guizhou–Guangxi “golden triangle” is considered to be one of the regions hosting Carlin-like gold deposits in China. Gold deposits in this region can be grouped into lode type that are controlled by faults and layer-like type controlled by stratigraphy. Arsenopyrite is one of the major gold-bearing minerals in these deposits. Rhenium–Os isotopic dating of arsenopyrite from the lode type Lannigou and Jinya and the layer-like type Shuiyindong gold deposits yields isochron ages of 204 ± 19 Ma, 206 ± 22 Ma, and 235 ± 33 Ma, respectively. The data suggest that the Carlin-like gold deposits formed in Late Triassic to Early Jurassic, which is clearly earlier than the ca. 100–80 Ma acid to ultra-basic magmatism in this part of southwestern China. The ages are consistent with ore formation during a period of post-collisional lateral transpression, which is similar to that of the Carlin-like gold deposits in western Qinling of China, but quite different from Carlin-type gold deposits in Nevada, U.S.A.

Source: Ore Geology Reviews

DOI: 10.1016/j.oregeorev.2014.07.019

Authors: Maohong Chen, Jingwen Mao, Chao Li, Zhiqiang Zhang, Yuan Dang

Institutions: Chinese Academy of Geological Sciences, China University of Geosciences, China University of Geosciences (Beijing)

Language: English

Topic: Geochemistry and Geochronology of Asian Mineral Deposits

Subfield: Economics and Econometrics

Field: Economics, Econometrics and Finance

Domain: Social Sciences

Open Access status: hybrid

Estimated APC paid: $3,310

Funder: Ministry of Land and Resources of the People's Republic of China