摘要
根据中国120个斑岩、矽卡岩型铜、钼矿床的研究表明:中国斑岩、矽卡岩钢、钼矿床形成于地壳发展的一定阶段,一定构造单元。即形成于吕梁期之后的地槽褶皱区和印支期之后的地洼区,特别是后者,它是中国斑岩、矽卡岩铜、钼矿床发育最盛时期。它们分别占中国该类铜、钼矿床总量的84.7％,96.6％斑岩、矽卡岩铜、钼矿床的形成主要是由于地洼或地槽褶皱时期构造、岩浆活动改造或活化、迁移、富集原地层中的成矿物质或矿源层、层状铜(钼)矿的结果。
According to 120 porphyry and skarn Cu and Mo deposits in China, the author considers that the porphyry and skarn Cu and Mo deposits are confined to the definite stage and definite structural ele_ meat in crustal evolution, i.e. geosynclinal fold after Juliangian stage and diwa region after ludosinian stage, especially the diwa stage is the flourishest period forming porphyry and skarn Cu and Mo deposits. The reserves of the porphyry and skarn Cu deposits in the stgae make up 84.7% of the total reserves of the porphyry and skarn Cu deposits in China, and the reserves of the porphyry and skarn Mo deposits make up 96.6% of the total deposits reserves of the porphyry and skarn Mo deposits in China. The porphyry and skarn Cu and Mo are formed as the result of the tectonic and magmatic activity in diwa stage, which promoted the mobilization, migration and enrichment of Cu and Mo in continental crust and transformed stratiform Ca (Mo) deposits or Cu (Mo)_bearing source beds.
出处
《大地构造与成矿学》
EI
CAS
CSCD
1989年第3期214-225,共12页
Geotectonica et Metallogenia
关键词
铜矿
钼矿
地壳演化
中国
成矿作用
Crustal evolution, mineralization, porphyry Cu(Mo)deposits, skarn Cu(Mo) deposits, China
