geochemical index

基本解释

The strength center of all elements overlapped is considered as an important index in optimum estimate of Au geochemical abnormity.
金异常优选应把各异常元素的浓集中心是否重叠作为重要指标来考虑。
Exploration degree of Tarim Basin, however, is not high, so effective source rock distribution cannot be precisely defined only by geochemical index of the well sites.
而塔里木盆地勘探程度不高，仅凭井点的地化指标，是不能准确圈定有效烃源岩分布的。
Vulnerability is controlled by the groundwater flow system and geochemical system and can be assessed with the subjective index method, statistical or process-based method and integrated method.
其主要评价方法有主观分级评价法、统计或基于过程的评价法和综合评价法三大类。