柴达木盆地冷湖花岗岩体岩石学初步研究

Petrology of the Lenghu granite mass,northwestern Qaidam basin,China

根据岩石学、岩石化学以及锆石 U- Pb同位素测年等资料分析 ,冷湖岩体为一印支期发育的 S型花岗岩类岩石 ,可以归属同碰撞期逆冲 -褶皱 S型系列。该岩体的研究可能为南祁连印支期裂陷槽的关闭提供一定证据。

According to the petrologic, geochemical and isotope geochemical analysis, the authors consider that the Lenghu granodiorite is a S type granite mass occurred in Indosinian, and could be belonged to the fold thrust igneous rock series It supplies a petrologic evidence for Indosinian collision within the southern Qilian aulacogen