| 潘展超.Arc Gis在西天山阿吾拉勒东段铁矿资源预测的应用[J].地质与勘探,2013,49(3):558-569 |
| Arc Gis在西天山阿吾拉勒东段铁矿资源预测的应用 |
| Application of GIS to Ore Prediction of Iron Ore Resources in the Eastern Segment of Awulale of the West Tianshan |
| 投稿时间：2012-05-07 修订日期：2013-01-20 |
| DOI： |
| 中文关键词: 海相火山岩型铁矿 证据权模型 资源预测 西天山 |
| 英文关键词: marine volcanic iron , evidence weight model , resource prediction, the Wast Tianshan |
| 基金项目:中国地质调查局地质调查项目《天山成矿带地质矿产调查评价》（编号: 资[2010]矿评01-03-26）资助 |
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| 中文摘要: |
| [摘要] 本文以西天山阿吾拉勒东段海相火山岩型铁矿为例，从研究区的地质背景和已查明的6个海相火山岩型铁矿（点）出发，基于ArcGIS平台，建立空间数据库，结合已知矿(点)地质资料和野外验证分析，建立找矿模型与预测区提取模型，总结本区铁矿的主要控矿因素：①沉积地层；②侵入体；③布格重力异常，次要影响因素：①断层距离；②断层密度，将5个方面的证据图层与铁矿(化)点空间关系合成，采用证据权模型和加权Logistic回归模型进行成矿有利度评价，将研究区划分为6个靶区，结合研究区中主要矿(化)点对各靶区的地质成矿条件进行了探讨，分析了该地区的找矿潜力。 |
| 英文摘要: |
| Abstract: Taking skarn type iron deposits in the eastern section of the West Tianshan as an example，this work is based on the ArcGIS platform to establish a spatial database in terms of the geological background and 6 known marine volcanic iron(point)of the study area。 Combined with the known deposits，geological data and field check analysis，the prospecting and forecast area extraction models are established .This paper concludes the main ore control factors of the marine volcanic iron deposits as follows:①edimentary formation;②intrusive mass; ③bouguer gravity anomaly , and the secondary: ①fault influence distance; ②fault influence density．Starting from the these five aspects of evidence and the spatial relationship of iron mineralization，and making synthesis to them，the evidence weight model and weighted logistic regression model are used to evaluate metallogenic beneficial degrees，and iron six target areas are forecasted．Combined with the main mineral occurrences, the geology metallogenic conditions of the target area are discussed, and the prospecting potential is analyzed. |
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