Lithofacies characteristics of the Longtan Formation and its control of gold mineralization in the Shuiyindong gold deposit, Southwestern Guizhou Province

YANG Chengfu; LIU Jianzhong; GU Xuexiang; WANG Zepeng; CHEN Faen; WANG Dafu; XU Liangyi; LI Songtao

2020 Vol. 39, No. 8

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YANG Chengfu, LIU Jianzhong, GU Xuexiang, WANG Zepeng, CHEN Faen, WANG Dafu, XU Liangyi, LI Songtao. Lithofacies characteristics of the Longtan Formation and its control of gold mineralization in the Shuiyindong gold deposit, Southwestern Guizhou Province[J]. Geological Bulletin of China, 2020, 39(8): 1221-1232.

Citation:

YANG Chengfu, LIU Jianzhong, GU Xuexiang, WANG Zepeng, CHEN Faen, WANG Dafu, XU Liangyi, LI Songtao. Lithofacies characteristics of the Longtan Formation and its control of gold mineralization in the Shuiyindong gold deposit, Southwestern Guizhou Province[J]. Geological Bulletin of China, 2020, 39(8): 1221-1232.

Lithofacies characteristics of the Longtan Formation and its control of gold mineralization in the Shuiyindong gold deposit, Southwestern Guizhou Province

1.
School of Geosciences and Resource, China University of Geosciences(Beijing), Beijing 100083, China
2.
No. 105 Geological Party, Guizhou Bureau of Geology and Mineral Exploration and Development, Guiyang 550018, Guizhou, China
3.
Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock, Ministry of Natural Resources, Guiyang 550001, Guizhou, China
4.
Guizhou Bureau of Geology and Mineral Exploration and Development, Guiyang 550001, Guizhou, China

More Information

Corresponding author: LIU Jianzhong, 2825364825@qq.com

Received Date: 08 April 2019

Revised Date: 12 March 2020

Publish Date: 15 August 2020

Abstract

Abstract

The Shuiyindong superlarge gold deposit, located in southwestern Guizhou Provence, has a high-grade layered orebody in the Upper Permian Longtan Formation(P₃l).It is controlled by specific impure carbonate rocks and favorable lithology.In this paper, the authors summarized constraints on the sedimentary facies and rock characteristics of the Longtan Formation.Based on a detailed and systematic petrographic comparative analysis of the host rocks and wall rock, the authors hold that the Longtan Formation consists of a set of shallow-water delta peat bogs and coastal tidal flat lagoon sediments characterized by rich organic matter.Limestone interlayers in Longtan Formation may represent transgressive events of different periods.The Emeishan basalt magma eruption changed Wujiapingian epoch sedimentary paleogeographic pattern and composition of terrigenous clastic rocks in the formation of the Longtan Formation and developed sediments related to volcanic activity; iron dolomite in the ore might have been a thermal alteration product of volcanic clastic material; organic matter and basaltic volcanic fragments in impure bioclastic limestone was an important controlling factor for the abnormal enrichment of gold to form high-grade orebodies.When looking for this type of gold deposits in southwestern Guizhou Provence, researchers should focus on the evaluation of the favorable lithological unit.
- lithologic ore-control /
- Longtan Formation /
- lithofacies /
- Shuiyindong gold deposit /
- southwestern Guizhou Province

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References

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