【摘 要】
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1.ObjectivesrnAs one of three major tectonic blocks of China,the South China Block has undergone multiple periods of tectonic-magmatic-metamorphic events.Among
【机 构】
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Research Center for Petrogenesis and Mineralization of Granitoid Rocks,China Geological Survey,Wuhan
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1.ObjectivesrnAs one of three major tectonic blocks of China,the South China Block has undergone multiple periods of tectonic-magmatic-metamorphic events.Among these events,the Caledonian orogeny results in the formation of NE-trending Wuyi?Yunkai orogen in South China.This orogen shows complex characteristics,including widespread angular unconformity between Ordovician and Devonian strata,pre-Devonian intense deformation and metamorphism (amphibolite to granulite facies),and extensive crustal remelting (Shu LS et al.,2020).However,the tectonic nature of this orogeny remains controversial,and two main models are present: (1) Intracontinental orogen (Wang YJ et al.2013) and (2) subduction-accretionary orogenic belt related to the amalgamation between the Yangtze and Cathaysia blocks (Liu SF et al.,2018).
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