与花岗岩有关金属成矿系统的时-空-物结构初探  

A preliminary study on the time-space-material structure of the granite-related metal metallogenic systems

作　　者：李厚民[1] 李立兴[1] 李小赛[1] 沈宏飞 孙欣宇 LI Houmin;LI Lixing;LI Xiaosai;SHEN Hongfei;SUN Xinyu(MNR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;School of Earth Science and Resources,China University of Geosciences(Beiing),Beijing 100083,China)

机构地区：[1]自然资源部成矿作用与资源评价重点实验室,中国地质科学院矿产资源研究所,北京100037 [2]中国地质大学地球科学与资源学院,北京100083

出　　处：《矿产勘查》2023年第8期1342-1349,共8页Mineral Exploration

基　　金：国家重点研发计划项目(2022YFC2905400,2018YFC0603904)资助。

摘　　要：与花岗岩有关的矿床是金属矿产资源的重要来源,对该类矿床成矿作用的持续时间、成矿深度、成矿规模的研究等鲜有报道,但这些科学问题的解决却对找矿预测具有重要参考价值。本文对前人相关研究成果进行了初步总结认为:与花岗岩有关的成矿作用持续时间一般约为1 Ma,但也可持续更长时间;成矿深度一般不超过5~10 km;成矿系统的垂向延深一般5~10 km,水平延伸一般不超过10~30 km;热液矿化蚀变空间分带的内因可能主要是离子电位和离子半径的差异,围岩的热导率可能是矿化蚀变空间分带的主要外因之一。Metal deposits associated with granite intrusions represent an important source of metal resources.The metallogenic duration,depth,and magnitude of mineralization related to granites are vital issues for mineral resource exploration and prediction but seldom reported.On the basis of a preliminary summary of previous stud⁃ies,this study shows that:the duration of mineralization is generally about 1 million years but can also be much longer;the depth of mineralization and the vertical extension of the metallogenic system generally do not exceed 5-10 km,and the horizontal extension usually less than 10-30 km;the internal cause of spatial zoning of hydrothermal alteration is ion potential and ionic radius,while the external cause may be the thermal conductivity of wall rock.

关 键 词：成矿持续时间 成矿深度 成矿系统规模 花岗岩有关金属矿床 

分 类 号：P619.222[天文地球—矿床学]