Delamination and destruction of the North China Craton  

作　　者：GAO Shan ZHANG JunFeng XU WenLiang LIU YongSheng 

机构地区：[1]State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China [2]State Key Laboratory of Continental Dynamics, Northwest University, Xi'an 710069, China [3]College of Earth Sciences, Jilin University, Changchun 130061, China

出　　处：《Chinese Science Bulletin》2009年第19期3367-3378,共12页

基　　金：Supported jointly by the National Natural Science Foundation of China (Grant Nos. 90714010, 90714005, 90814003 and 40673019);Ministry of Education and State Administration of Foreign Experts of China (Grant No. B07039);the MOST special funds from State Key Laboratory of Continental Dynamics and State Key Laboratory of Geological Processes and Mineral Resources

摘　　要：This article presents an overview on recent developments in studies of chemical and physical processes of lithospheric delamination with respect to destruction of the North China Craton. It is emphasized that the pyroxenite source resulting from interaction between eclogite-derived melt and peridotite is a direct consequence of delamination. The pyroxenite source thus formed has unique mineralogical and geochemical features, which characterize Mesozoic basalts of the North China Craton. Melt-peridotite interaction played an important role in refertilization of cratonic lithospheric mantle, leading to density increase, weakening and final destabilization of the North China Craton. The nature of the melt is the key to distinguish mechanisms of destructing this craton.This article presents an overview on recent developments in studies of chemical and physical processes of lithospheric delamination with respect to destruction of the North China Craton. It is emphasized that the pyroxenite source resulting from interaction between eclogite-derived melt and peridotite is a direct consequence of delamination. The pyroxenite source thus formed has unique mineralogical and geochemical features, which characterize Mesozoic basalts of the North China Craton. Melt-peridotite interaction played an important role in refertilization of cratonic lithospheric mantle, leading to density increase, weakening and final destabilization of the North China Craton. The nature of the melt is the key to distinguish mechanisms of destructing this craton.

关 键 词：稳定地块 辉岩 地球物理学 调查 

分 类 号：P3[天文地球—地球物理学]