摘要
在吉林省重砂数据库的基础上,利用地理信息系统对延吉市幅及通化重砂数据进行空间分析,建立数据模型,利用重矿物的数据结构特征与已知金矿床进行的耦合关系研究发现,金矿形成普遍分析在D>2.0,均在二级预测区,斑块变形指数和斑块面积与含金量相关,大则含金量高。
Geographic information system(GIS) has been already applied in diverse scientific fields, including the prospecting of minerals. By combining GIS and quantitative methods of landscape pattern, the spatial analysis on distributive data of heavy minerals in the 1∶200 000 map of Yanji, Jilin Province is carried out, and data models are set up. It has been discovered that the formation of gold occurs extensively in the secondary predictive area, where the fractural dimension (D) is large than 2.0. The contents of gold distributed in the investigative area are closely to the patch shapes. The more complicated the patch shape is, the more the contents of gold will be. So, making use of GIS system to search for gold deposit is feasible.
出处
《吉林地质》
2004年第4期126-131,共6页
Jilin Geology
基金
国土资源部中国地质调查局项目资助(项目编号200218310057).
