摘要
传统的看法多认为太平洋东西两岸花岗岩是截然不同的两类花岗岩。根据对美国西部实地考察,结合笔者长期对华南花岗岩的研究结果,可以看出两岸花岗岩在形成时代、成因类型、地理分布、成矿种类和演化等方面是类似或相同的。
The traditional idea proposes that granites on the east and west Pacific Ocean are different. According to field investigations of the geology of the Western Unites States coupled with the authors' long-term studies on granites in South China, granites both in eastern China and in the western United States are similar. Geological, petrological, mineralogical, geochemical and isotopic data show that: ①the ages of granites on both coasts are mainly Mesozoic; ②the granites can be also divided into two series: the deep-source Yangtze series (series Ⅱ) and the shallow-source Nanling series (series Ⅰ); ③series Ⅱ granites mainly occur in coastal regions at both sides of the Pacific Ocean while series Ⅰ granites are distributed in the interiors beyond the coasts; ④granites on both coasts have similar metallogenic features: Fe, Cu, Au, Mo, W, Zn, Pb and Ag mineralizations are associated with series Ⅱ granites and REE, Nb(Ta), Sn and Be mineralizations are related to series Ⅰ; ⑤tectonic settings and evolutions of granites are also comparable in the two regions.
出处
《地质学报》
EI
CAS
CSCD
北大核心
1995年第1期42-55,共14页
Acta Geologica Sinica
关键词
花岗岩
地球化学
成岩
成矿
petrogeno-mineralization of granites, regional granites, granite: geochemistry
