稀土元素分析在鄂尔多斯盆地陇东地区长9物源中的应用

The Analysis of Rare Earth Elements Used in the 9 Provenances in Erdos Basin Longdong Region

文章通过稀土元素对陇东地区长9物源进行了分析,研究表明:陇东地区长9油层组的主要物源区和物源方向来自研究区西南方向,其次是西北方向和东北方向。西南方向的物源物源区为陇西古陆及南部的祁连—秦岭古陆的沉积岩母岩区,西北部物源区母岩为鄂尔多斯盆地东北缘—北缘的太古代花岗岩与元古代变质杂岩体组合,东北方向为太古代花岗岩与元古代变质杂岩体。

The rare earth elements in Longdong area of 9 provenances were analyzed. The study shows that the main area of Longdong area in Chang 9 formation of the source and source direction of study area from the southwest, northwest and northeast second. The provenance source area southwest of sedimentary rocks the parent rocks of Longxi ancient and southern Qilian-Qinling Mountains block, northwest provenance of parent rock is north of the northeastern margin of Erdos basin-Archean Proterozoic metamorphic granite and rock combination, the northeast direction for the Archean Proterozoic metamorphic rock and granite.