Geological Characters and Prospecting Prediction Model of the Sedimento-Metamorphic Iron Deposits in the North China Craton
详细信息
- 责任者：Shi Rui (School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Chen Jianping
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(7)
- 关键词：铁矿 ; iron ores ; 沉积变质矿床 ; metamorphosed sedimentary deposit ; 华北地区 ; North China
- 页码：p.2606-2616
- 图表：9 illus., 2 tables, 36 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The North China Craton is the largest and oldest block in China,which has complicated geological evolution history. It is the distributive province of the important iron deposits resource. Under the guidance of regional metallogenic regularity,the multisource data sets including metamorphic formations,ore-controlling structure,ore-induced magnetic anomaly,geochemical and natural heavy minerals were extracted with GIS technology. The prospecting model of sedimentary metamorphic iron deposits was built based on it. Then weights for each layer were calculated to identify the posterior probabilities for each cell of the study area under weights of evidence module. According to the posterior probabilities,six prospecting areas were delineated,which were divided into two grades. Three prospecting areas of grade A are eastern Hebei Province,eastern Liaoning Province and Wutai-Lvliang; Three prospecting areas of grade B are Daqingshan-Se’ernengtengshan,Lushan-Wuyang and western Shandong Province. Due to the similar metallogenic conditions with the known iron deposits,around the known deposits,these areas still have great metallogenic potential. So they deserve more attention in future mineral exploration.