Geochemistry on Yangla copper deposit, China

The Yangla copper deposit, situated in the middle section of Jinshajiang tectonic belt between Zhongza-Zhongdian block and Changdu-Simao block, is a representative and giant copper deposit that has been discovered in Jinshajiang-Lancangjiang-Nujiang region in recent years. There are coupled relationship between Yangla granodiorite and copper mineralization in the Yangla copper deposit. Five molybdenite samples yielded a well-constrained 187Re-187Os isochron age of 233.3±3 Ma, the metallogenesis is therefore slightly younger than the crystallization age of the granodiorite. S, Pb isotopic compositions of the Yangla copper deposit indicate that the ore-forming materials were derived from the mixture of upper crust and mantle, also with the magmatic contributions. In the late Early Permian, the Jinshajiang Oceanic plate was subducted to the west, resulting in the formation of a series of gently dipping thrust faults in the Jinshajiang tectonic belt, meanwhile, accompanied magmatic activities. In the early Late Triassic, which was a time of transition from collision-related compression to extension in the Jinshajiang tectonic belt, the thrust faults were tensional; it would have been a favorable environment for forming ore fluids. The ascending magma provided a channel for the ore-forming fluid from the mantle wedge. After the magma arrived at the base of the early-stage Yangla granodiorite, the platy granodiorite at the base of the body would have shielded the late-stage magma from the fluid. The magma would have cooled slowly, and some of the ore-forming fluid in the magma would have entered the gently dipping thrust faults near the Yangla granodiorite, resulting in mineralization.

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Cite this as

Yang, Xi-An, Liu, Jia-Jun, Cao, Ye, Han, Si-Yu, Gao, Bing-Yu, Wang, Huan, Liu, Yue-Dong (2012). Dataset: Geochemistry on Yangla copper deposit, China. https://doi.org/10.1594/PANGAEA.778977

DOI retrieved: 2012

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.778977
Author Yang, Xi-An
Given Name Xi-An
Family Name Yang
More Authors
Liu, Jia-Jun
Cao, Ye
Han, Si-Yu
Gao, Bing-Yu
Wang, Huan
Liu, Yue-Dong
Source Creation 2012
Publication Year 2012
Resource Type application/zip - filename: Yang_2012
Subject Areas
Name: Chemistry

Name: Lithosphere

Related Identifiers
Title: Geochemistry and S, Pb isotope of the Yangla copper deposit, western Yunnan, China: Implication for ore genesis
Identifier: https://doi.org/10.1016/j.lithos.2012.04.008
Type: DOI
Relation: IsSupplementTo
Year: 2012
Source: Lithos
Authors: Yang Xi-An , Liu Jia-Jun , Cao Ye , Han Si-Yu , Gao Bing-Yu , Wang Huan , Liu Yue-Dong .