摘要
探讨了制约中国东部新生代上地幔物质组成不均一性和复杂多阶段演化史的主要因素。中国东部新生代上地幔物质组成特征主要为地幔部分熔融、地幔交代和软流圈底辟等作用所决定。这些深部地质过程与中新生代以来中国东部受相邻板块俯冲并导致岩石圈伸展、减薄等过程密切相关。
The paper discusses factors constrainting the chemical and isotopicheterogeneity and complicated evolutionary history of Cenozoic upper mantle beneathEastern China. Several major factors are summarized which include partial melting ofmantle, mantle metasomatism and asthenopheric dirpiring. All these processes are wellrelated to subduction of adjacent oceanic plate in Mesozoic-Cenozoic and the causingresults of lithospheric stretching and thinning.
出处
《世界地质》
CAS
CSCD
1996年第3期7-11,共5页
World Geology
关键词
上地幔
物质组成
制约因素
新生代
中国
Upper mantle, chemical and isoftopic composition, constrainting factors,Cenozoic, Eastern China
