桂东大瑶山地区铜金多金属矿床成矿系列及成矿模式

大瑶山地区铜金多金属矿床主要由斑岩型、夕卡岩型、断裂-蚀变岩型3种类型的矿床（点）组成，矿种以金为主，伴有铜、银、铅、锌等矿化，构成了一个较完整的成矿系列组合，可划分2个矿床成矿系列和4个矿床成矿亚系列.成矿作用与浅成-超浅成岩浆岩关系密切.岩浆活动为矿床的形成提供了热源和热液.断裂构造提供了运移通道并控制着矿体分布.震旦系-寒武系是主要矿源层.建立了矿源层、构造、岩浆活动“三位一体”的区域成矿模式.

METALLOGENIC SERIES AND MODEL OF COPPER AND GOLD POLYMETALLIC DEPOSITS IN DAYAOSHAN, EASTERN GUANGXI

The copper and gold polymetallic deposits in Dayaoshan area are dominated by porphyry type,skarn type and fault-altered rock type,with mainly gold,associated by copper,silver,lead and zinc mineralization which form a completed metallogenic series.Base on the study on the characteristics of deposits and their tectonic setting,two metallogenic series including four sub-series are defined in the area.The metallogenesis is closely related to shallow-ultrashallow igneous rocks. The magmatic movement provides heat source and hydrothermal fluid for ore-forming.The faults perform as migration path and control the distribution of ore bodies.The Sinian-Cambrian strata are major source beds of ore.A regional metallogenic model of source bed-structure-magmatism is established.