Origin of Mesozoic gold mineralization in South Korea

被引:55
作者
Choi, SG [1 ]
Kwon, ST
Ree, JH
So, CS
Pak, SJ
机构
[1] Korea Univ, Dept Earth & Environm Sci, Seoul 136701, South Korea
[2] Yonsei Univ, Dept Earth Syst Sci, Seoul 120749, South Korea
关键词
fluid inclusion; gold; Korea; Mesozoic magmatism; stable isotope;
D O I
10.1111/j.1440-1738.2005.00459.x
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The Mesozoic gold-silver deposits in South Korea are closely associated with the Mesozoic granitoids. The Jurassic gold-silver deposits can be distinguished from the Cretaceous ones in terms of occurrence, alteration style, gold fineness, associated mineral assemblage, fluid inclusion and stable isotopic compositions. The Jurassic deposits were formed in mesozonal environments related to deep-seated granitoids, whereas the Cretaceous ones were formed in epizonal environments related to shallow-level granitoids. The Jurassic auriferous deposits (about 165-145 Ma) show fluid characteristics typical of an orogenic-type gold deposit, and were probably generated in a compressional regime caused by an orthogonal convergence of the Izanagi oceanic plate into the Asiatic margin. However, strike-slip faults and caldera-related fractures, together with subvolcanic to volcanic activity, may have played an important role in the formation of Cretaceous gold-silver lode deposits (about 110-45 Ma) under a continental arc setting.
引用
收藏
页码:102 / 114
页数:13
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