Research into petrochemistry and metamorphic condition of eclogites on Shaliuhe, the north margin of the Qaidam Basin

The eclogite was found in the Neoproterozoic granitic gneiss in Shaliuhe, the north margin of the Qaidam Basin. It occurs in shape of lens or boundins, and mainly composed of garnet, omphacite and rutile etc. Based on the reseach into petrochemistry and metamorphic condition of the eclogites here, we found its peak metamorphic conditions is 492.12 ℃~(653.48 ℃) and 1.008~1.625 GPa , not achieve the UHP environment, and no evident UHP evidence was found in eclogites here, it is distinct from the other eclogite outcrop places(Yuqiahe, Xitieshan, Yematan)in the north Qaidam Basin.