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- W2365588135 abstract "According to material source and genesis, the authors divide the granitoids in S. China into four series:mantle-derived (differentiation); mantle plus crust mixed source(syntexis); crust derived transformation (remelting);and mantle plus crust mixed source (syntexis) alkaline. The most important characteristics of different series of granitoids have been discussed in this paper. Mainly based on Sm-Nd, Rb-Sr isotopic compositions of granitoids of different ages, and using binary mixed model,the authors have calculated the proportions of upper crust and depleted mantle end members within source rocks of granitoids and discussed the interrelationship of granitoid generation and continental crust evolution:during the Donganian and Xuefengian cycles,the granitoids show diversity in material source and genesis series, including mantle derived series and unmatured or matured continental crust-derived transformation series etc.: during the Caledonian and Hercynian cycles, the granitoids were mainly of continental crust-derived transformation series. In the Indosinian-Yanshanian activated region cycle, as a result of mantle activation,the syntexis series granitoids and related volcanic rocks of mantle plus crust mixed source have been formed, stretching along the east coast of China. Inversely,continental crust transformation series granitoids of this period are restricted at the continental margin.The Sm-Nd,Rb-Sr isotopic investigations of granitoids have comfirmed that the mantle activation is the main driving force for the tectono-magmatic evolution in the diwa stage." @default.
- W2365588135 created "2016-06-24" @default.
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- W2365588135 date "1990-01-01" @default.
- W2365588135 modified "2023-09-22" @default.
- W2365588135 title "EVOLUTION OF CONTINENTAL CRUST AND MATERIAL SOURCE (GENESIS) OF GRANITOIDS IN S.CHINA" @default.
- W2365588135 hasPublicationYear "1990" @default.
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