Ore-fluid Systems of fine disseminated gold deposits along the southeastern margin of the Yangtze Plate
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Fine disseminated gold deposits occurring along the southeastern margin of the Yangtze Plate belong to the epithermal type resulting from different systems of ore-forming fluids. According to their sources, the ore-forming fluids can be divided into four systems: a) meteoric water system; b) oil-brine system; c) basin-brine system; and d) magmatic-formation water system. The four hydrothermal systems are responsible for four types of gold deposits, respectively. The meteoric water system produces hot spring gold deposits. The basin-brines, which are derived from fissure water, structural water and absorbed water sealed up in strata, are responsible for the basin-brine-type deposits. The oil-brine system, having the same source as the basin-brines, is characterized by the involvement of organic matter and is responsible for the oil-brine-type deposits. Inclusion fluid data show that there are obvious differences in chemical composition and carbon, oxygen, hydrogen and sulfur isotopes for these hydrothermal systems. Different metallogenic provinces, in which one of the four systems is dominant, can be recognized in the region.
Key wordsfine disseminated gold deposit ore-fluid system isotope fluid inclusion
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- Li Wenkeng, Jiang Xinshun, Ju Ranhong et al., 1989, Contributions to the project of regional metallogenic conditions of main gold deposit types in China, Southwest Guizhou Province (Vol. 6), edited by the Shenyang Institute of Geology and Mineral Resources: Beijing, Geological Press, p. 1–86 (in Chinese).Google Scholar
- Liu Huaizhi, Zhong Ziyun, and Yao Min, 1986, A preliminary study of the Youjiang rift zone: Journal of Guilin Metallurgical Geological Institute, v. 6, p. 9–19(in Chinese).Google Scholar
- Lu Zhongming, 1986, Activation of the southwestern border of the Yangtze plateform and formation of the Youjiang geosyncline: Geology of Guizhou, v. 3, p. 9–27(in Chinese).Google Scholar
- Shen Weizhou, 1987, Geology of Stable Isotopes: Beijing, Atomic Energy Press, p. 27–31(in Chinese).Google Scholar
- Yang Zijian, 1987, A paleo-fault zone traversing southeastern China: Scientia Geologica Sinica, v. 22, p. 221–230(in Chinese).Google Scholar
- Zhang Jingrong, Lu Jianjun, Zhu Kaijun et al., 1992, Metallogenetic characteristics in micro-fine disseminated gold deposit belt on the southeastern margin of the Yangtze plate: Journal of Nanjing University(Earth Science Edition), v. 4, p. 74–85 (in Chinese).Google Scholar
- Zhang Jingrong, Zhu Kaijun, Lu Jianjun et al., 1993a, Geochemistry of microfine disseminated gold deposits in southwestern Guizhou Province: Journal of Nanjing University (Natural Science Edition), v. 29, p. 283–292 (in Chinese).Google Scholar
- Zhang Jingrong, Lu Jiangjun, Zhu Kaijun et al., 1993b, Monographs of the 5th National Symposium on Ore Deposits, Collected Papers of Chinese Geological Association, v.2: Beijing, Geological Press, p. 17–18(in Chinese).Google Scholar