安徽省霍邱铁矿区及外围铁矿成矿规律及潜力研究   总被引：1，自引：0，他引：1  

陆三明  楼金伟  李茂章  李仁和  韦导忠  金敏 《安徽地质》2014,(2):94-98

安徽省霍邱铁矿是一个远景储量大于20×108t的大型铁矿田,本文首次对该矿田磁异常进行了详细的清理工作,深入研究了矿田地球物理特征,并进行解释推断,结合地质背景、矿体赋存条件研究,建立了铁矿床找矿标志,优选了13个新的找矿靶区,上述工作对该区下一步找矿具指导意义  相似文献   

Contributions of secular changes in the regional evolution of ore deposits to predictive mineral exploration: A case study of the Zhongtiao Mountain Cu metallogenic area,southern North China Craton     

《Journal of Asian Earth Sciences》2014

The Zhongtiao Mountain is located in the southern part of the North China Craton. The area experienced multi-stage tectono-magmatic events during the Precambrian, including Neoarchean-Early Paleoproterozoic (2550–2350 Ma) crustal growth, Paleoproterozoic (2350–1850 Ma) rifting–subduction–accretion–collision, and Early Mesoproterozoic (1800–1750 Ma) extension. The geological events contributed to a major copper mineral system in the region. Here we evaluate the processes of the mineral system, such as the source of metals, migration pathways, the formation of trap zones, and the deposition of metal in an attempt to establish a mineral accumulation evaluation model for regional ore prospecting. A three-step process has been proposed in this study as follows. (i) Determining the spatial and temporal distribution of the essential elements and processes of the mineral system to understand the most critical ore-controlling factors. (ii) Translating the ore-forming processes into mappable features and quantitative extraction of the information on mineralization using Geographic Information System (GIS) technology to establish a mineral accumulation evaluation model. They were treated as evidence layers for weight-of-evidence (WofE) analysis. (iii) Utilizing the weighted values of the evidence layers to create a posterior probability map. Based on the posterior probabilities, four mineral accumulation horizons were finally delineated for the Zhongtiao Mountain, which are considered to provide important guidelines for further ore exploration and study.  相似文献