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俯冲带榴辉岩的变形作用及其对恢复俯冲-折返过程的意义
引用本文:曹毅,宋述光.俯冲带榴辉岩的变形作用及其对恢复俯冲-折返过程的意义[J].中国区域地质,2008(10):1646-1653.
作者姓名:曹毅  宋述光
作者单位:教育部造山带与地壳演化重点实验室 北京大学地质系,北京100871
基金项目:北京大学校长基金,国家自然科学基金(编号:40773012)和全国博士学位论文作者专项资金资助(编号:200531)资助.
摘    要:榴辉岩是大洋和大陆俯冲带的重要岩石类型,在研究俯冲带的形成过程、热结构、壳幔相互作用等方面有重要意义。通过对天然和实验样品中石榴子石、绿辉石等矿物的变形特征、变形机制、变形影响因素等的综合分析,系统总结了高压变质带中榴辉岩矿物显微和超微变形研究的进展,探讨了榴辉岩的变形特征对恢复俯冲与折返过程的意义及一些尚待解决的问题。

关 键 词:榴辉岩  变形  组构  折返过程

Deformation of subduction zone eclogite and its significance for the subduction-exhumation processes.
CAO Yi,SONG Shu-guang.Deformation of subduction zone eclogite and its significance for the subduction-exhumation processes.[J].Regional Geology of China,2008(10):1646-1653.
Authors:CAO Yi  SONG Shu-guang
Institution:(MOE Key Laboratory of Orogenic Belts and Crustal Evolution, Department of Geology, Peking University, Beijing 100871, China )
Abstract:Eclogite is an important rock type within both oceanic and continental suhduction zones and plays significant roles in revealing the formation and evolution of subduction zones, thermal structure and crust-mantle interaction. Studies of eclogite deformation enable us to understand the process of subduction and exhumation of rocks from the ancient subduction zones. This paper gives a systematic summary of the progress in the study of microstructures, deformation mechanisms and related influence factors in both natural and synthesized eclogite minerals (garnets, omphacite, etc.) in high-pressure metamorphic belts. The authors try then to probe into the significance of eclogite deformation in the study of reconstruction of the subduction and exhumation processes and some problems that still remain to be solved.
Keywords:eclogite  deformation  fabric  exhumation process
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