|Table of Contents|

Formation conditions of Jinding giant lead-zinc deposit(PDF)

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

Issue:
2005年第02期
Page:
21-25
Research Field:
Publishing date:

Info

Title:
Formation conditions of Jinding giant lead-zinc deposit
Author(s):
ZENG RongXUE Chun-jiLIU Shu-wenLI Yong-qiang
School of Earth Sciences and Resources Management,Chang’ an University,Xi’ an 710054,China
Keywords:
Jingding lead-zinc deposit clastic rock association evaporite organic matter fractur systems Yunnan Province
PACS:
P618.4
DOI:
-
Abstract:
The Jinding Pb-Zn deposit is the largest Pb-Zn deposit at present in China. Its ore-forming process has been stud- ied for more than twenty years, but there are still many debates. Although the Jinding lead-zinc deposit is the sedimentary rock-hosted one,its origin is different from the other sedimentary rock-hosted Pb-Zn deposit type, such as MVT, Sedex and SST. By studying the regional geological setting, basin nature and geologic characteristic of the ore field, this paper believes that firstly, the formation of the Jinding Pb-Zn deposit was under the conditions of the unstable regional geological setting and very thick clastic formation; secondly, organic materials and sulphates provided the necessary reducing sulphur; thirdly, the elongate activity of faults made ore fluids stably migrate to the same space; and lastly, the rocks on the Jinxing formation and under the upper part of the Yunlong Formation could have formed the traps suitable to the precipitation of metals and re- sulted in the formation of the giant Pb-Zn deposit.

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