洋壳深俯冲超高压变质作用研究及其地质意义  

The study of UHP metamorphic ophiolitic rocks and its geological significance

作　　者：张立飞[1] 

机构地区：[1]造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院,北京100871

出　　处：《地质通报》2007年第9期1079-1085,共7页Geological Bulletin of China

基　　金：国家自然科学基金项目(编号:40325005;40228003);教育部高校青年教师奖励项目联合资助。

摘　　要：洋壳深俯冲经历超高压变质作用的岩石比较稀少,是目前超高压变质作用研究的重要前沿领域,有关这方面的研究对于建立新的冷俯冲带变质作用类型、探讨地幔水流体的成因、建立更广泛的超高压变质岩石的抬升机制具有重要意义。另外,洋壳深俯冲高压变质带往往与低压高温变质带组成双变质带,对双变质带的深入研究对于完整地重塑俯冲碰撞造山带的形成演化过程具有重要意义。简要地介绍了新疆西天山洋壳深俯冲超高压变质带的研究现状和存在的问题。The study of rare reserved ultrahigh pressure metamorphic rocks of oceanic crust is the frontier of metamorphic geology, which is very significant for establishing new type metamorphism of cold subduction zone, exploring the origin of water in the mantle and understanding the mechanism of tectonic exhumation. On the other hand, the high p/T metamorphic belt of deep oceanic subduction associated with the low p/T metamorphic belt to compose a pair metamorphic belt which recorded the geological evolution from slibduction to collision of an orogenic belt. In addition, the recent progress and problems of the study of Western Tianshan UHP metamorphic belt have also been discussed in this paper.

关 键 词：洋壳岩石 冷俯冲带 超高压变质作用 西天山 

分 类 号：P542.4[天文地球—构造地质学] P588.34[天文地球—地质学]