|Table of Contents|

Forming Mechanism of H2S in the Jinding Pb-Zn Deposit , Lanping Basin , Northwest Yunnan Province(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2008年第04期
Page:
367-372
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Forming Mechanism of H2S in the Jinding Pb-Zn Deposit , Lanping Basin , Northwest Yunnan Province
Author(s):
GAO Yong-bao12XUE Chun-ji3ZENG Rong 2
1. Xian Center o f China Geology Survey, Xian 710054, Shaanxi, China; 2. School o f Earth Sciences and Resources, Changan University, Xian 710054, Shaanxi, China; 3. State Key Laboratory o f Geological Processes and Mineral Resources, China University o f Geosciences, Beijing 100083, China)
Keywords:
hydrogen sulphide bacterial sulphate reduction thermochemical sulphate reduction Jinding Pb-Zn deposit Lanping basin
PACS:
P611;P593
DOI:
-
Abstract:
The Jinding giant Pb-Zn deposit in Lanping basin of Yunnan Province is the largest Pb-Zn deposit in China, and also the youngest and only continental sediment-hosted super-large Pb-Zn deposit in the world. In order to study the forming mechanism of H2S, organic inclusions, sulfur isotopes and carbon isotopes were tested and analyzed. The gypsum and kinds of organic matters were all suitable for forming plenty of H2S. In the primary diagenesis mineralization stage, the temperature was relatively lower and the forming mechanism of H2S was mainly bacterial sulphate reduction. While in the major mineralization stage, the temperature rose with the rising of fluid from mantle, and the forming mechanism of H2S was mainly thermochemical sulphate reduction of oil and gas.

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Last Update: 2008-12-20