Layering of subcontinental lithospheric mantle  

作　　者：Ling Chen 

机构地区：[1]State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences [2]CAS Center for Excellence in Tibetan Plateau Earth Sciences [3]University of Chinese Academy of Sciences

出　　处：《Science Bulletin》2017年第14期1030-1034,共5页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China (41225016, 41688103, 91414301);Chinese Academy of Sciences

摘　　要：Recent seismic studies reveal a sharp velocity drop mostly at^70–100 km depth within the thick mantle keel beneath cratons, termed the mid-lithosphere discontinuity(MLD). The common presence of the MLD in cratonic regions indicates structural and property layering of the subcontinental lithospheric mantle(SCLM). The nature and origin of the MLD, and many issues associated with the layering of the SCLM are essential to understand the formation and evolution of continents, and have become frontier subjects in the Earth sciences.Recent seismic studies reveal a sharp velocity drop mostly at ~70-100 km depth within the thick mantle keel beneath cratons, termed the mid-lithosphere discontinuity （MLD）. The common presence of the MLD in cratonic regions indicates structural and property layering of the subcontinental lithospheric mantle （SCLM）. The nature and origin of the MLD, and many issues associated with the layering of the SCLM are essential to understand the formation and evolution of continents, and have become frontier subjects in the Earth sciences.

关 键 词：Mid-lithosphere discontinuity Lithosphere-asthenosphere boundary Subcontinental lithospheric mantle Formation and evolution of continents 

分 类 号：P542.5[天文地球—构造地质学]