区域地球化学场的背景—异常结构分析

区域地球化学场结构特征是化探异常评价的重要因素。基于区域元素背景含量和异常发育程度,提出了地球化学场结构的简明分类和划分方法,将区域地球化学场分为4个基本结构类型,并以广东省为例,初步讨论了主要组合类型的找矿意义。利用区域地球化学场的背景—异常结构分类,审视了大范围地球化学场的结构特点及其与成矿的关系,做法简单实用,为迅速聚焦找矿远景区或找矿靶区提供了一种有效手段。

AN ANALYSIS OF BACKGROUND-ANOMALY STRUCTURE OF REGIONAL GEOCHEMICAL FIELD

The structural characteristics of the regional geochemical field is an important factor in the appraisal of geochemical anomalies.Based on background content of elements and degree of anomaly development in the region,this paper puts forward the simple and clear method for classification of the structures of geochemical fields,divides the regional geochemical field into four basic structural types and,exemplified by Guangdong Province,and tentatively discusses the ore-prospecting significance of the major combinational types.Utilizing the background-anomaly structural classification,we can observe carefully the structural characteristics of regional geochemical field in relation to mineralization.The method is simple and practical,and hence serves as an effective means for rapid delineation of ore perspective areas or ore-prospecting targets.