Geological Characteristics, Metallogenic Time and Tectonic Setting of the Triassic Molybdenum Deposits in the East Part of the East Tianshan and the Beishan Area, NW China
详细信息
- 责任者：Zhu Jiang (Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Lü Xinbiao
- 刊名：Xinjiang Geology
- 出版年：2013
- 卷期：32(1)
- 关键词：钼矿 ; molybdenum ores ; 新疆 ; Xinjiang
- 页码：p.21-28
- 图表：illus., 3 tables, 26 refs.
- 分类号：1001
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
Intensive magmatic activities and related Mo mineralization occurred throughout in the east part of Eastern Tianshan and the Beishan area,such as the newly explored Huaheitan,Baishan,Xiaohulishan,and Donggobi molybdenum deposits.Previous U-Pb and Re-Os dating suggested these Mo deposits formed during the 235-220 Ma interval.The Re content in the molybdenite,together with Sr-Nd-Hf isotopic composition of the granite,suggested that the ore-forming materials derived from mixed crustal and mantle sources.The post-orogenic lithospheric extension and mantle-derived magmas underplating were important geodynamic controls on the Mo mineralization in the Beishan area,and provided abnormal heat flow,voluminous fluids of multiple sources and ore metals.It is significant to pay more attention to evaluation of the ore-forming potentiality in the Triassic granites in Beishan belt.