Timing of destruction of the North China Craton
作者单位：State Key Laboratory of Lithospheric EvolutionInstitute of Geology and GeophysicsChinese Academy of Sciences
会议名称：《中国科学院地质与地球物理研究所2012年度（第12届）学术年会》
会议日期：2013年
学科分类：070904[理学-构造地质学] 0709[理学-地质学] 07[理学]
基 金：supported by the National Natural Science Foundation of China(Grant No.40925007)
关 键 词：North China Craton Destruction Early Cretaceous Magmatism
摘 要：The North China Craton(NCC) is the typical example of destruction of an ancient ***,the destruction mechanism and geodynamic controlling factors still remain enigmatic due to controversy on the timing of destruction,which is the key to understanding the destruction *** on temporal and spatial distributions of the igneous rocks,and their sources and tectonic settings,it is recognized that six stages of tectono-magmatism occurred in the NCC during the Phanerozoic,i.e.,Carboniferous to Early Permian, Late Permian to Middle Triassic,Late Triassic,Jurassic,Early Cretaceous and *** them,Cenozoic magmatism mainly consists of alkali basalts and is found only occasionally in the eastern *** first four stages of magmatism and tectonism,related to the southward subduction of the Paleo-Asian plate and the assembly of Sino-Korean and Yangtze cratons,are locally distributed in limited parts of the NCC, reflecting a multiple stage modification of the NCC from the Late Carboniferous to ***,the intensive development of Early Cretaceous magmatism,extensional deformation and associated gold mineralization, with significant continental crustal growth,indicate that the eastern NCC was destroyed during this time *** destruction was the result of Paleo-Pacific subduction beneath the eastern Asian continent, with lithospheric removal and/or replacement of an ancient cratonic lithosphere by a juvenile oceanic lithosphere.