摘要
在分析研究区的成矿地质背景和总结枞树板式铅锌多金属矿的成矿规律的基础上,利用GIS技术,分析提取了地质、构造、岩浆岩、地球物理、地球化学、遥感及自然重砂等异常找矿信息,并利用地层、构造等信息分析了地层组合熵、断裂等密度、优益度及中心对称度。在此基础上建立了枞树板式铅锌多金属矿的预测模型,利用MRAS软件中的证据权模块进行预测。结果显示,63%的已发现矿床(点)、80.3%的已探明资源量落在有利成矿区内,显示出良好的预测效果,其成果为湘东南地区的枞树板式铅锌多金属矿的勘探开发提供了科学依据。
On the basis of analyzing the geological settings in the study area and summarizing the metallogenic regularities of the Zong- shuban-type lead-zinc polymetallic deposit, the authors extracted the muhisource data sets, including geology, structure, magmatic rocks, geophysics, geochemistry, remote sensing data and natural heavy minerals by GIS, analyzed the iso-density, priority degree, central symmetry of the fault structures and stratigraphic combination entropy. After the prediction model was established, we use weight of evidence model in MORAS to do prediction. The result showed that sixty-three percent of the known mineral occurrences con- taining 80. 3% of the mount metal resources fell in the prospective area. On the above bases, the authors established a prediction mod- el of Zongshuban-type lead-zinc polymetallic deposit and conducted prediction with the help of the weight of evidence module in MO- RAS software. The resuhs offered scientific evidence of resource exploration in southeast Hunan province for the Zongshuban lead-zinc polymetallic deposit.
出处
《地质学刊》
CAS
2013年第3期471-477,共7页
Journal of Geology
基金
中国地质调查局项目"全国重要矿产总量预测"(1212011121040)
关键词
GIS
证据权
成矿预测
铅锌多金属矿
湘东南
GIS
Weight of evidence
Metallogenic prediction
Lead-zinc polymetallic deposit
Southeast Hunan Province
作者简介
李胜苗（1983-），男，工程师，博士研究生，主要从事矿产预测相关工作，E-mail：shengmiaoli@163．com
