贵州烂泥沟金矿三维定量预测
投稿时间:2019-11-25  修订日期:2019-12-22  点此下载全文
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作者单位E-mail
张权平 中国地质大学(北京) zqp_dream@163.com 
陈建平 中国地质大学(北京)  
陈雪薇 中国地质大学(北京)  
李国超 中国地质大学(北京)  
刘畅 中国地质大学(北京)  
朱静 中国地质大学(北京)  
基金项目:科技部深地资源勘查开采专项“深部成矿地质异常定量预测方法与模型”(编号:2017YFC0601502)
中文摘要:贵州烂泥沟金矿是中国黔桂滇“金三角”区内已知最大的卡林型金矿床,资源储量大(大于126.25t),达到超大型规模,大地位置处在扬子准地台西南缘右江盆地北侧,由赖子山背斜、板昌逆冲断层与册亨构造带所组成的三角形构造变形区的北部顶点。本次研究系统剖析烂泥沟金矿的成矿地质背景与成因类型,建立找矿地质模型,并依据资料基础建立三维地质模型,进而在模型上开展成矿地质异常信息定量提取与三维空间重构,建立找矿预测模型,采用“立方体预测模型”方法,通过三维证据权与找矿信息量相结合的综合圈定办法减少预测结果的不确定性,共圈定找矿靶区5处,其中A类靶区2处,B类靶区3处,为该区的进一步勘查提供了参考。
中文关键词:三维地质建模  立方体预测模型  地质异常  定量预测  贵州烂泥沟金矿
 
3D Quantitative prospecting on Lannigou gold deposit in Guizhou Province
Abstract:The Lannigou gold deposit in Guizhou Province is the largest known Carlin-type gold deposit in the "Golden Triangle" area of Guizhou, Guangxi and Yunnan in China, with large reserves (more than 126.25t), reaching a super large scale. It is located in the north side of Youjiang Basin on the southwest margin of Yangtze paraplatform, and the northern apex of the triangle structural deformation area composed of laizishan anticline, the Banchang thrust fault and Danheng tectonic belt. This research systematically analyzes the geological settings of mineralization and genetic type of the Lannigou gold deposit, established a prospecting geological model, and a 3D geological model based on the data foundation, and then carries out quantitative extraction and 3D spatial reconstruction of ore-controlling geological anomaly information on the model. A prospecting prediction model was established, and the "cube prediction model" method was used,to reduce the uncertainty of the prediction results through the comprehensive delineation between three-dimensional weight of evidence and the information contents. A total of 5 prospecting targets are delineated, including 2 Class A targets and 3 Class B targets. This research provides a reference for further exploration of the study area.
keywords:3D geological modeling  Cube prediction model  Geological anomaly  Quantitative prospecting  Lannigou Gold deposit
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