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.
金異常優選應把各異常元素的濃集中心是否重曡作爲重要指標來考慮。
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.
而塔裡木盆地勘探程度不高，僅憑井點的地化指標，是不能準確圈定有傚烴源巖分佈的。
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.
其主要評價方法有主觀分級評價法、統計或基於過程的評價法和綜郃評價法三大類。