metabasalts

基本解釋

Danfeng Group(DFG) metabasalts can be divided into two types: one is LREE-enriched cafe-alkaline basalts, the other is LREE-depleted tholeiitic basalts.
丹鳳祥變質(zhì)玄武巖可以分爲(wèi)兩類：一類是LREE富集型的鈣堿性玄武巖，另一類是LREE平坦型的拉斑玄武巖。
The geochemical characteristics of the metabasalt agree with those of continental rift type volcanic rocks, forming a tectonic environment of the active shelf rift basin.
變質(zhì)玄武巖的地球化學(xué)特征與大陸裂穀型火山巖一致,形成於活動(dòng)陸棚裂陷(穀)盆地的搆造環(huán)境。
Trace Element and Isotopic Geochemistry of Metabasalts from Dafeng Group (DFG) in Shangxian-Danfeng Area, Shaanxi Province
陝西商縣-丹鳳地區(qū)丹鳳群變質(zhì)玄武巖的微量元素和同位素地球化學(xué)
SO, the sources of DFG metabasalts could include following units on the basis of trace element and isotopic geochemical data: 1 ) Depleted asthenosphere mantle;
因此，根據(jù)微量元素和同位素地球化學(xué)資料，丹鳳群變質(zhì)玄武巖的源區(qū)可能包括下述組分：1）虧損的軟流圈地幔（DM）；
metabasalt
變玄武巖