Discovery of the oldest(ca.2.87 Ga)granitic gneisses in the Qinling-Dabie Orogenic Belt:Direct evidence of Mesoarchean crust  

作　　者：Kai Wang Tian-yu Zhao Shuan-hong Zhang 

机构地区：[1]Institute of Geomechanics,Chinese Academy of Geological Sciences,China Geology Survey,Ministry of Natural Resources,Beijing 100081,China [2]Key Laboratory of Paleomagnetism and Tectonic Reconstruction,Ministry of Natural Resources,Beijing 100081,China [3]State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China

出　　处：《China Geology》2023年第3期533-535,共3页中国地质（英文）

基　　金：Supported by the National Natural Science Foundation of China(42002246,42002244,and 41725011);the Fundamental Research Funds of the Chinese Academy of Geological Sciences(DZLXJK202202);China Postdoctoral Scientific Foundation(2019M660740 and 2021T140628);project of the China Geological Survey(DD20221644).

摘　　要：1.Objectives Precambrian microcontinents(terranes)or continental fragments are generally essential components in the evolution and architecture of Phanerozoic orogenic belts.Formation of the Qinling-Dabie Orogenic Belt,a typical Paleozoic to Triassic collisional zone between the South China Block(including the Yangtze Block and the Cathaysia Block)and the North China Block(inset map in Fig.1a),is characterized by the occurrence of several Precambrian complexes or microcontinents.

关 键 词：DABIE QINLING BELT 

分 类 号：P588.345[天文地球—岩石学] P534.2[天文地球—地质学] P597.3