| 中国区域成矿若干问题探讨 |
| 点此下载全文 |
| 引用本文：.1999.Problems pertaining to regional metallogeny of China[J].Mineral Deposits,18(4):323~332 |
| Hits: 2630 |
| Download times: 2072 |
|
| 基金项目:国土资源部重要基础研究项目(9501107)、国家攀登预选项目（95-预25-3-3）和中国地质大学“211”重点学科建设子项目“成矿系统、资源评价及3S技术” |
|
| 中文摘要:本文以区域大地构造演化和区域岩石圈组成为基础，将中国大陆划分为6个成矿域：天山-兴蒙成矿域、塔里木．华北成矿域、秦-祁-昆成矿域、扬子成矿域、华南成矿域、喜马拉雅-三江成矿域，并描述了它们的基本特征。按照不同地质时代，简述了中国大地构造演化与主要矿床形成过程，并从中国所处大地构造背景和地质成矿演化历史出发，探讨了中国区域成矿特色，初步提出8点：①大陆边缘成矿显著：②发育叠加复合成矿作用；③壳源花岗岩成矿规模巨大：④浅成低温成矿系统发育；⑤构造控矿成矿明显；⑥金矿形成复杂多样；⑦成矿的多期性和不均一性；⑧大陆边缘中新生代金属成矿高峰。以上述为基础，提出了“复合大陆成矿体系”观点。 |
| 中文关键词:成矿域 成矿演化 区域成矿特征 中国 |
| |
| Problems pertaining to regional metallogeny of China |
|
|
| Abstract:Rational classification of metallogenic domains is the basis of metallogenic study. According to geotectonic evolution and regional lithospheric features , the authors propose six metallogenic domains in China: (l) Tianshan-Xingmong metallogenic domain, (2) Tarim-North China metallogenic domain, (3) Qinling-Qilian-Kunlun metallogenic domain, (4) Yangtze metallogenic domain, (5) South China metallogenic domain, (6) Himilayan-Sanjiang metallogenic domain. The geological and ore-forming characteristics of each domain are described in this paper. The tectonic evolution and main metallogenic systems of different geological epochs in China, viz., Precam-brian, Early Paleozoic, Late Paleozoic, Mesozoic and Cenozoic, are demonstrated in this paper. Some metallogenic features of China are discussed on the basis of geotectonic background and metallogenic evolutionary history. They are: ( 1) large proportions of mineral deposits occur in paleocontinental margins; (2) superimposed mineralization is significant; (3) mineralizations of crust-derived anatectic granite are large in scale and concentrated in certain spatial-temporal structures; (4) epithermal ore-forming system is well-developed; (5) structural ore-control role is obvious; (6) gold mineralization is complex and diversified; (7) mineralization is characterized by multiple stages and heterogeneity; (8) in Mesozoic, a turn of tectonics- mineralization took place in continental margins and ore mineralization culminated. Finally, the known features of mtallogeny of China are generalized as "the composite continental metallogenic system" |
| keywords:China, metallogenic domain, metallogenic evolution, metallogenic features, composite continental metallogenic system |
| View Full Text View/Add Comment Download reader |
|
|
|
