中基性侵入岩中-大比例尺专题地质填图实践——以河北武安铁矿集区填图试点为例  

The practice of thematic geological mapping in medium-large scale for intermediate-basic intrusive rocks: A case study of the Wu'an iron ore concentration area,Hebei Province

作　　者：苏尚国[1] 简东川 谢玉淳 罗照华[1] 蒋俊毅[1] 刘璐璐[1] 霍延安 崔晓亮 张波[1] 顾大鹏 王玉 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《地质通报》2017年第11期2077-2088,共12页Geological Bulletin of China

基　　金：中国地质调查局项目<重要成矿域岩浆岩1:5万及同位素填图试点与示范>(编号:12120115069701);国家自然科学基金项目<内蒙古自治区温根南铜镍硫化物矿床岩浆通道成矿系统>(批准号:41272105);教育部博士学科点基金<甘肃金川铜镍(铂)硫化物矿床岩浆通道成矿系统及深部资源预测>(编号:20130022140001)

摘　　要：侵入岩类的填图方法伴随侵入岩成因分类、填图实践及研究技术手段发展而不断更新和完善。近20年来,由于新技术及新方法的应用,侵入岩的研究取得了长足的进步。研究表明,一个岩浆系统可能具有多个岩浆源区,单一岩浆房和全岩浆同时结晶模式在自然界几乎不能存在。因此,基于同源岩浆演化理论的"单元-超单元"填图方法似乎应该得到修正和完善。以河北武安铁矿集区填图试点为依托,总结出一套针对中性-基性侵入岩的填图方法——"岩浆系统-子系统"填图方法。运用该填图方法,在武安地区识别出6个岩浆成矿系统,在详细研究的基础上,对每个系统进行了若干子系统的进一步划分。在此基础上,厘清了每个系统的侵入岩组装过程及成岩成矿过程。Mapping methods of igneous rocks have been upgraded and improved with the classification of igneous rocks,mapping practice and the development of the technology. The research on magmatic rocks has made a great progress in the past 20 years with the application of new technologies and new methods. The new research shows that there is multiple magmatic sources in a magmatic system; there isn't magmatic chamber and crystallization in a whole magmatic chamber in the natural magmatic system. The "unit-superunit" mapping method based on the theory of homogeneous magma evolution should be corrected and upgraded. Therefore,it is important to explore a set of mapping methods that are compatible with the understanding of the magmatic system. In this study,a mapping method for neutral basement intrusive rocks — magmatic "system-subsystem" mapping method is summarized as an example. Using this method,the authors identified six magmatic systems in the Wu'an area. Subsystems were divided for each magmatic system based on the characteristics of magma resource and metallogeny after the detailed research. The authors have clarified the processes of intrusive rock assembly and metallogeny in each system.

关 键 词：中基性侵入岩 岩浆系统 岩浆子系统 专题地质填图 河北武安 

分 类 号：P623[天文地球—地质矿产勘探] P588.12[天文地球—地质学]