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The first discovery of eclogite and Palaeoproterozoic granitoids in the Beishan area, northwestern Gansu Province, China

DOI: 10.1007/BF02885491

Keywords: eclogite,Palaeoproterozoic granitoids,Beishan area,Gansu Province

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Abstract:

The eclogite, discovered in Liuyuan, occurs as lenticular enclave within granitic gneiss. It has typical features of eclogite in petrology and mineralogy. The eclogite provides an important window to reconstruct the tectonic border of the Tarim block. The granitoids, located in Baihu area, yield U-Pb zircon ages of 1 660–2 000 Ma (Palaeoproterozoic), which implies an early Precambrian basement in the area.

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