期刊
ORE GEOLOGY REVIEWS
卷 53, 期 -, 页码 434-445出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.oregeorev.2013.02.006
关键词
Geochronology; Stable isotope geochemistry; Mujicun Cu-Mo deposit; Craton destruction; Tectonics; North China Craton
资金
- National Natural Science Foundation of China [90914002]
- 111 Project under the Ministry of Education and the State Administration of Foreign Experts Affair, China [B07011]
- Talent Award under 1000 Plan
The North China Craton (NCC) provides a classic example of lithospheric destruction and refertilization. The timing and duration of magmatism and related metallogenesis associated with the destruction process are pivotal to understanding the geodynamic controls. In this study, we present zircon U-Pb and Hf data, Re-Os ages, and He, Ar, Pb and S isotope data from the Mujicun porphyry Cu-Mo deposit in the northern Taihang Mountains within the Central Orogenic Belt of the NCC. We constrain the timing of magmatism as 144.1 +/- 1.2 Ma from zircon U-Pb data on the diorite porphyry that hosts Cu-Mo mineralization. Another U-Pb age of 139.7 +/- 1.4 Ma was obtained from an epidote skarn that is located in the contact zone between the porphyry and its wall rocks. These data and five Re-Os molybdenite ages that range from 142.7 +/- 2.0 Ma to 138.5 +/- 1.9 Ma suggest that magmatism and mineralization occurred in about five million year duration from similar to 143 Ma to similar to 138 Ma. The He, Ar, Pb and, Hf data suggest that magmatism involved recycled Neoarchean lower crustal components, with input of heat and volatiles from an upwelling mantle. The Mujicun porphyry and associated mineralization provide a typical example for magmatism and metallogeny associated with lithospheric thinning in the NCC. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据