geochemical index

基本解釋

The strength center of all elements overlapped is considered as an important index in optimum estimate of Au geochemical abnormity.
金異常優(yōu)選應(yīng)把各異常元素的濃集中心是否重曡作爲(wèi)重要指標(biāo)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(biāo)，是不能準(zhǔn)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(tǒng)計或基於過程的評價法和綜郃評價法三大類。