摘要
滇西和台湾地区喜马拉雅期成矿作用分属西太平洋成矿带和特提斯喜马拉雅成矿带的重要组成部分。通过两地区喜马拉雅期斑岩、火山岩型金铜矿床的综合分析对比之后， 认为其成矿作用在本质上是相似的， 但由于所处大地构造位置不同而又有其差异。初步归纳出９ 个方面的相似之处与７ 个方面的差异。经运用近几年兴起的顺磁共振法测定成矿年龄， 不仅滇西喜马拉雅期斑岩类金铜成矿作用发生于喜马拉雅期是无可置疑的， 而其他时期斑岩类及喜马拉雅期以前老地层中的金铜矿成矿期， 大多数亦发生在喜马拉雅期， 表明喜马拉雅期， 是十分重要的一次成矿作用。研究两地喜马拉雅期成矿作用， 不但为进一步开展该地区的地质工作提供大量的实际资料， 而且还为矿床学及其全球性地质成矿理论的发展起着推动与启迪的作用。
The Himalayan period metallogenesis of West Yunnan and Taiwan separately belongs to the important part of West Pacific and Tethys-Himalayan metallogenetic zone. After a comprehensive analysis and comparison of Himalayan period Au-Cu depostits of porphyry, volcanics type in two regions, we think that their metallogenesis is similar in essence, but with some differences because of their different tectonic positions. And 9 similarities and 7 differences have been summarized. According to the metallogenetic age determined by paramagnetic resonance measurement, not only the Au-Cu metallogenesis of Himalayan porphyries in West Yunnan but also the Au-Cu metallogenesis in the porphyries of other periods and old strata before Himalayan took place mainly in Himalayan, which shows that the Himalayan metallogenesis is very important. The study of the Himalayan metallogenesis of both regions can provide a lot of real informations for the further development of geological work in these regions and promote the advance of mineral deposit study and global geological metallogenesis theory.
出处
《云南地质》
1999年第2期168-177,共10页
Yunnan Geology
基金
云南省科委国际科技合作项目
