地球化学负异常及其找矿意义  

Geochemical Negative Anomaly and Its Prospecting Significances

作　　者：朴寿成[1] 刘树田[1] 连长云 杨永强[1] 

机构地区：[1]长春地质学院

出　　处：《地质与勘探》1996年第2期46-50,共5页Geology and Exploration

摘　　要：地球化学负异常的存在具有普遍性。完整的地球化学异常场应包括正异常场和负异常场。负异常按其规模和找矿意义可分为区域、矿床和矿体３个不同层次。区域负异常，可以指明区域找矿方向，圈定找矿靶区；矿床负异常指出矿床可能存在的地段；矿体负异常具体圈定矿体存在的空间位置。负异常与正异常的综合研究，有助于深化对矿床成因的认识，扩大找矿信息，提高找矿效果。The geochemical negative anomaly exists wide. A completely geochemical anomaly should inculde two parts:one is the positive anomalous field,the other is the negative anomalous field. The negative anomaly can be divided into three different gradations according to its scale and prospecting significance,that is region,deposit and orebody. The negative anomaly on the region can guide us regional exploring direction and delineate the prospecting target area. The deposit's negative anomaly is conducive to point out the section in which the deposit probably exists,and the orebody's negative anomaly may delineate concretely the spatial location of orebodies. The comprehensive study of negative and positive anomalies is helpful to deepen the understanding on deposit genesis,broaden exploring information and improve prospecting effect.

关 键 词：地球化学勘探 负异常 找矿意义 

分 类 号：P632[天文地球—地质矿产勘探]