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Ore‐controlling Tectonic Features and Ore REE Geochemical Characteristics of Pb‐Zn Deposit in Jinniuchang of Northeast Yunnan, China
Author(s) -
KONG Zhigang,
ZHU Jieyong,
ZHU Linsheng
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12369_13
Subject(s) - china , resource (disambiguation) , library science , mining engineering , geology , archaeology , engineering , geography , computer science , computer network
Multi-metal contained Pb-Zn deposits in northeast Yunnan, China, is located in a joint place of the CircumPacific tectonic domain and Tethyan tectonic domain. This joint place is featured by complex geological structure, unique geological characteristic, and multiple Pb-Zn mineral deposits, which are discretely and linearly distributed along the cracks of several main fracture zones. Most of the Pb-Zn ores were filled into the surrounding rocks and fractures through tension cracking. In the southwestern edge of Yangtze plate, Jinniuchang Pb-Zn deposit is positioned in a triangle domain consisted of fracture zones of Xiaojiang, Yadu-Shuicheng and MileShizong. South-North oriented Xiaojiang tectonic belt and North-East oriented Kuanshanchang-Jinniuchang tectonic belt were overlapped in this triangle zone. Regional tectonics were comprised of crystalline basement formed between Archean and Meso Proterozoic, and fold basement formed in Paleo, and discontinuous sea-phase sedimentary cover rock formed in Early Sinian, and continuous sedimentary cover rock formed between Late Sinian and Late Paleozoic. This “bi-basement bi-cover” structure was mainly developed through cracking.