地质力学学报2018，Vol.24Issue(2)：199-211,13.DOI:10.12090/j.issn.1006-6616.2018.24.02.021
闽西南马坑式铁矿成矿结构面特征及找矿意义
METALLOGENIC STRUCTCTURAL PLANE CHARACTERISTICS AND ITS PROSPECTING IMPORTANCE FOR THE MAKENG TYPE IRON DEPOSITS IN SOUTHWESTERN FUJIAN PROVINCE
摘要
Abstract
Located in the Late Paleozoic depression of southwestern Fujian, the Makeng type iron deposits are the main skarn iron polymetallic deposits.The major ore bodies are generally controlled by lithologic boundaries and tectonic structural planes,especially the interface between silica and calcareous bed,and they are located above the quartz sandstone of the Lower Carboniferous Lindi formation(C1l) and below the carbonate rocks of the Upper Carboniferous Jingshe formation-Upper Permian Qixia formation(C2j-P2q).In order to reveal the genesis and mineralization mechanism of the Makeng type iron deposits,the Si/Ca surface ore-controlling theory was used to discuss the metallogenic structctural plane characteristics and its ore-controlling mechanism.Five types of metallogenic interfaces were divided according to their features in this research.We deemed that the main ore bodies of Makeng type iron deposits were controlled by the physical and chemical differences between these Ca/Si surfaces,and it is easy to form expansion space and geochemical barrier near the surfaces in the process of tectonic and fluidic activities.Based on the understanding above, the metallogenic model of the Makeng type iron deposits was built using the Si/Ca surface ore-controlling theory.This work is thought to be meaningful to conduct prospecting research of iron polymetallic deposits in southwestern Fujian Province.关键词
马坑式铁矿/成矿结构面/硅钙面/闽西南Key words
Makeng type iron deposit/metallogenic structctural plane/Si/Ca surface/southwestern Fujian分类
天文与地球科学引用本文复制引用
王森,张达,吴淦国,易锦俊,李兴俭,宇腾达,白昱,高孝巧..闽西南马坑式铁矿成矿结构面特征及找矿意义[J].地质力学学报,2018,24(2):199-211,13.基金项目
中国地质调查局地质调查项目(12120114028701,12120113089600,1212011085472) （12120114028701,12120113089600,1212011085472）
