Some progress on understanding the Phanerozoic granitoids in China
Some progress on understanding the Phanerozoic granitoids in China作者机构:Key Laboratory of Deep-Earth DynamicsMinistry of Natural ResourcesBeijing 100037China Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China Key Laboratory of Metallogeny and Mineral Assessment of Ministry of Natural ResourcesInstitute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China Nanjing centerChina Geological SurveyNanjing 210016China
出 版 物:《China Geology》 (中国地质(英文))
年 卷 期:2018年第1卷第1期
页 面:84-108页
学科分类:07[理学]
基 金:Major State Basic Research Program of the P.R. China, (2013CB429803) National Foundation of China, (U1403291) China Geological Survey, CGS, (1212010611803, 1212011085474, 1212011120135, DD20160123, DD20160345)
主 题:Granitoids Zircon age Spatial-temporal distribution Radiogenic isotopes Orogen
摘 要:There are large volumes of the Phanerozoic granitoid rocks in China and neighboring *** recent years,numerous new and precise U-Pb zircon ages have been published for these granitoids,and define many important magmatic events,such as ca.500 Ma granitoid events in the West Junggar,Altai orogens in the NW China,and Qinling orogen in the central *** ages accurately constrain the time of important early Paleozoic,late Paleozoic,early Mesozoic and late Mesozoic magmatic events of the northern,central,western,southern and eastern orogenic Mountains in *** occur various types of granitoids in China,such as talc-alkaline granite,alkali granite,highly-fractionated granite,leucogranite, adakite,and rapakivi *** granites are not only typical Proterozoic as in the North China Craton,but were also emplaced during Paleozoic and Mesozoic in the Kunlun-Qinling orogen,a part of the China Central Orogenic Belt (CCOB).Nd-Hf isotopic tracing and mapping show that granitoids inthe southern Central Asian Orogenic Belt (CAOB)in China (or the Northern China Orogenic Belt)are characterized predominantly by juvenile *** juvenile crust in this orogenic domain accounts for over 50% by area,distinguishing it from other orogenic belts in the world,and those in central (e.g.,Qinling),southwestem and eastern *** on a large amount of new age data,a preliminary granitoid and granitoid-tectonic maps of China have been preliminarily compiled,and an evolutionary framework of Phanerozoic granitoids in China and neighboring areas has been established from the view of assembly and breakup of continental *** ideas on granitoid tectonics has also been proposed and discussed.