摘要
矿田找矿预测过程中受基础地质大数据的影响较大,导致其应用于地质复杂区域时筛选结果的准确性较差,为此研究了江西省德安县彭山矿田遥感找矿预测方法。以下鞭山锡矿区作为彭山地区的典型矿田,分析了其地质特征与成矿规律,依据分析结果再结合遥感技术,获得遥感找矿要素与遥感蚀变信息,建立遥感综合信息找矿靶区预测模型,得到彭山地区找矿靶区定量预测结果输出。预测结果显示,研究区共定量预测出3个典型找矿靶区,分别位于该区的西北侧、西侧及东侧区域,主要具环形与条带状构造,构造发育方向主要为东北向、西北向及近南北向,所提取到的遥感蚀变信息主要有碳酸盐化、绿帘石化、绿泥石化、绢云母化、高岭土化及铁染,3个靶区均具有较好的成矿条件;野外实际查证证实3个靶区中存在高岭土化、铁染及碳酸盐化等蚀变发育,且蚀变岩块中Cu与Au的含量较高,预测结果得到证实,可为该区域的找矿勘探提供可靠的参考依据。
In the process of ore prospecting prediction,basic geological big data has a significant impact,resulting in poor accuracy of screening results when applied to complex geological areas.Therefore,a remote sensing prospecting prediction method for Pengshan ore field in De'an County,Jiangxi Province was studied.As a typical ore field in the Pengshan area,the Xiabianshan tin ore area is analyzed for its geological characteristics and mineralization rules.Based on the analysis results and remote sensing technology,remote sensing prospecting elements and remote sensing alteration information are obtained.A remote sensing comprehensive information prospecting target area prediction model is established,and the quantitative prediction results of the prospecting target area in the Pengshan area are obtained.The prediction results show that three typical prospecting target areas have been quantitatively predicted in the study area,located on the northwest,west,and east sides of the area,mainly consisting of annular and banded structures,and the structural development directions are mainly northeast,northwest,and nearly south-north.The remote sensing alteration information extracted mainly includes carbonation,epidotization,chloritization,sericitization,kaolinization,and iron staining.All three target areas have good mineralization conditions.The field investigations have confirmed the existence of kaolinization,iron staining and carbonation in the three target areas,and the contents of Cu and Au in the altered rock blocks are high.The predicted results have been confirmed,providing reliable reference for ore prospecting in this area.
作者
谭荣
徐裕敏
徐先宇
王天晨
余振东
TAN Rong;XU Yu-min;XU Xian-yu;WANG Tian-chen;YU Zhen-dong(The Third Geological Brigade of Jiangxi Geological Bureau,Jiujiang 332100,China)
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2024年第4期973-981,共9页
Acta Petrologica et Mineralogica
基金
中国地质调查局地质调查项目(DD20190166-2020-06)。
关键词
德安县彭山
矿田地质
成矿规律
找矿靶区
遥感技术
蚀变信息
Pengshan,De'an County
ore field geology
metallogenic regularity
prospecting target area
remote sensing technology
information of alteration
