摘要
本文提出了中国斑岩铜矿系列研究的3个不同层次:全球成矿系列、区域成矿系列和矿床体系,并以此为出发点论述了中国斑岩铜矿系列不同层次的成矿地质环境。指出,我国斑岩铜矿系列除受聚敛板块边界控制之外,主要受到陆内离散型以及陆块之间活动带的控制,与此相关的前阿尔卑斯基底断裂系和中、新生代盖层以及陆缘新生壳层的断裂系的叠置,控制了浅成超浅成相钙碱性岩浆的侵位和中国斑岩铜矿系列的时、空分布,也导致了成矿作用的多旋回性。
In accordance with the global metallogenic series, regional metallogenic series and ore deposit systems which are put forward for the tirst time, different study levels of metallogenic geological environments of the porphyry copper deposit series in China are discussed and it is considered that the porphyry copper deposits in China are controlled not only by the boundaries of convergent plates, but also mainly by the boundaries of intraplate divergent mobile belts and those between continental blocks. Besides the emplacement of hypabyssal and superhypabyssal calc-alkali magma and the temporal-spatial distribution of China's porphyry copper deposits are controlled by the superimposition of fracture systems of the pre-Alpine basement, Meso-Cenozoic cover and continental-margin newborn crust. Therefore, China's porphyry copper deposit series mostly show multiple emplacements of magmas and polycyclicity of mineralization associated with porphyry. This paper also discusses three different types of porphyry copper (molybdenum) deposit series: pre-orogenic to orogenic, orogenic, and postorogenic, of which the last one is the most important. The multi-stage mineralization and diverse forms of ore deposition are also manifested.
出处
《地质学报》
EI
CAS
CSCD
北大核心
1991年第3期250-262,共13页
Acta Geologica Sinica
