从扩充的威尔逊循回看中国大陆演化轨迹  

Evolutional Trajectory of the Chinese Continental Lithosphere Reveled by the Expanded Wilson Cycle

作　　者：杨文采[1] 

机构地区：[1]"大地构造与动力学"国家重点实验室中国地质科学院地质研究所,北京100037

出　　处：《地质论评》2015年第2期237-244,共8页Geological Review

基　　金：国家自然科学基金委员会和中国科学院"板块构造与大陆动力学"学科发展战略项目资助

摘　　要：全球对比同类大地构造单元的壳幔结构,根据壳幔结构的差异和大地构造作用发生的时代把它们按演化阶段排序,可以找寻这类大地构造单元岩石圈演化的规律性。笔者在文中根据全球地学界实施的COCORP、BIRPS、DEKORP、LITHOPROBE、ICDP、ECORS和SINOPROBE等计划取得的成果,扩充了板块构造学中的威尔逊循回,即把原先主要描述大洋板块起源、发展和封闭的威尔逊循回,扩展到同时包括大陆和大洋板块演化的大循回中去。文中概述了扩充的威尔逊循回的内容,除经典的威尔逊循回的组元之外,扩充的组元包括洋陆转换、大陆汇聚拼合和大陆裂解等,为大陆岩石圈生成和演化作用提供了细节。根据扩充的威尔逊循回的大陆岩石圈演化规律,可以对中国地质学家已经发展的大陆构造演化的序列进行进一步的阐释,使构造演化的序列的属性和轨迹更加准确清晰。从寒武纪古亚洲洋扩张和冈瓦纳大陆裂解,到新生代印度次大陆与亚欧大陆碰撞拼合,中国大陆的大地构造事件序列说明扩充的威尔逊循回的是大陆岩石圈演化轨迹的大概率规律。Worldwide comparison of lithospheric investigation achievements of COCORP, BIRPS,DEKORP, LITHOPROBE,ICDP, ECORS and SINOPROBE enables to expand the original Wilson cycle, which mainly describes generation, development and closing of ocean plates, to a complete and detailed cycle that describes generation, development and evolution of both ocean and continent plates. In this way, one can look for evolution path of worldwide plates at least since the Proterozoic Era. The expanded Wilson cycle suggested in this paper includes new processes such as ocean--continent transition and continental accretion and rifting, as well as the original Wilson cycle ; and much more details are also provided. Based on the expanded Wilson cycle I further explain the evolutional event sequence of Chinese continent with the mentioned tectonic processes that have been discussed by many Geologists since 1940s. From the expansion of the Paleo-Asia Ocean in the Cambrian and rifting of the Gondwana continent to collision between the India sub-continent to Eurasia in the Cenozoic, the evolutional event sequence of Chinese continent shows that the expanded Wilson cycle expresses the evolutional trajectory of the Chinese continental lithosphere.

关 键 词：板块构造 扩展的威尔逊循回 全球对比 岩石圈演化 大地构造作用 中国大陆 作用事件序列 

分 类 号：P541[天文地球—构造地质学]