Geology and C-O isotope geochemistry of carbonate-hosted Pb-Zn deposits, NW Guizhou Province, SW China | |
Song Dou;Jiaxi Zhou | |
2013 | |
Source Publication | Chinese Journal of Geochemistry
![]() |
Volume | 32Issue:1Pages:7-18 |
Abstract | The Pb-Zn metallogenic district in NW Guizhou Province is an important part of the Yunnan-Sichuan-Guizhou Pb-Zn metallogenic province, and also is one of the most important Pb-Zn producers in China. The hosting rocks of the Pb-Zn deposits are Devonian to Permian carbonate rocks, and the basement rocks are meta-sedimentary and igneous rocks of the Proterozoic Kunyang and Huili groups. The ore minerals are composed of sphalerite, galena and pyrite, and the gangue minerals are include calcite and dolomite. Geology and C-O isotope of these deposits were studied in this paper. The results show that δ13C and δ18O values of hydrothermal calcite, altered wall rocks-dolostone, sedimentary calcite and hosting carbonate rocks range from −5.3‰ to −0.6 ‰ (mean −3.4‰) and +11.3‰ to +20.9 ‰ (mean +17.2‰), −3.0‰ to +0.9 ‰ (mean −1.3‰) and +17.0‰ to +20.8‰ (mean +19.7‰), +0.6‰ to +2.5 ‰ (mean +1.4‰) and +23.4‰ to +26.5 ‰ (mean +24.6‰), and −1.8‰ to +3.9‰ (mean +0.7‰) and +21.0‰ to +26.8‰ (mean +22.9‰), respectively, implying that CO2 in the ore-forming fluids was mainly a result of dissolution of Devonian and Carboniferous carbonate rocks. However, it is difficult to evaluate the contribution of sediment de-hydroxylation. Based on the integrated analysis of geology, C and O isotopes, it is believed that the ore-forming fluids of these carbonate-hosted Pb-Zn deposits in this area were derived from multiple sources, including hosting carbonate rocks, Devonian to Permian sedimentary rocks and basement rocks (the Kunyang and Huili groups). Therefore, the fluids mixing is the main precipitation mechanism of the Pb-Zn deposit in this province. |
Keyword | c And o Isotopes Source Of Ore-forming Fluids Nw Guizhou Pb-zn Metallogeinc Province Sw China |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/8320 |
Collection | 矿床地球化学国家重点实验室 |
Affiliation | 1.Yunnan Nonferrous Metals Geological Bureau, Kunming 650051, China 2.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 3.School of Geoscience and Info-Physics, Central South University, Changsha 410083, China |
Recommended Citation GB/T 7714 | Song Dou;Jiaxi Zhou. Geology and C-O isotope geochemistry of carbonate-hosted Pb-Zn deposits, NW Guizhou Province, SW China[J]. Chinese Journal of Geochemistry,2013,32(1):7-18. |
APA | Song Dou;Jiaxi Zhou.(2013).Geology and C-O isotope geochemistry of carbonate-hosted Pb-Zn deposits, NW Guizhou Province, SW China.Chinese Journal of Geochemistry,32(1),7-18. |
MLA | Song Dou;Jiaxi Zhou."Geology and C-O isotope geochemistry of carbonate-hosted Pb-Zn deposits, NW Guizhou Province, SW China".Chinese Journal of Geochemistry 32.1(2013):7-18. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License | ||
Geology and C-O isot(1945KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment