东亚地区区域构造演化与构造域划分  

STUDY ON TECTONIC BACKGROUND,EVOLUTION AND TECTONIC DOMAIN DIVISION OF EASTERN ASIA

作　　者：商岳男[1] 康永尚[1,2] 岳来群[3] 魏彦志 齐雪峰 马素敏[1] 

机构地区：[1]中国石油大学地球科学学院,北京102249 [2]中国石油大学油气资源与探测国家重点实验室,北京102249 [3]国土资源部油气资源战略研究中心,北京100034 [4]中国石油昆仑燃气有限公司河北分公司,北京100176 [5]中国石油新疆油田分公司勘探处,克拉玛依834000

出　　处：《地质力学学报》2011年第3期211-222,共12页Journal of Geomechanics

基　　金：全球油气地质综合研究与区域优选(GT-YQ-QQ-2008-1-01-2010-2)

摘　　要：东亚大陆不是简单地以一个巨型前寒武纪克拉通为主体而形成的单一大陆,而是由一些小板块和众多微陆块及其间的褶皱带或造山带组合、经长期演化而形成的复合大陆。在前人分区研究成果的基础上,把东亚地区作为一个整体,经系统分析和有机整合,形成对整个东亚地区构造背景和构造演化的系统认识。研究表明,东亚地区构造演化过程可划分为3个阶段,即前寒武纪稳定陆壳形成阶段、古生代陆洋分化对立阶段和中新生代盆山对峙发展阶段,尤其以中新生代以来的构造演化对东亚大陆具有重要意义。以燕山期以来东亚地区所受地球动力学背景及其在不同地区作用的差异为主要参考指标,可将东亚地区划分为7个构造域:西部挤压构造域、西部相对稳定构造域、青藏—羌塘构造域、中部克拉通构造域、俯冲边缘构造域、东部环太平洋构造域和兴安—蒙古构造域,构造域的划分对于研究区内沉积盆地的成盆演化历史、进行盆地类型划分和盆地油气资源潜力类比分析具有重要的指导意义。Eastern Asia continent is a compound continent composed of some blocks,numerous micro-landblocks and fold belts or orogenic belts.In this article,the tectonic background and evolution of Eastern Asia as a whole are studied from the results of numerous authors relative to different sub-regions.Our synthetic study shows that the tectonic evolution of Eastern Asia can be divided into three stages： the generation stage of Precambrian epeirocratons,divergence and convergence stage of continental and oceanic crusts during the Paleozoic and basin-mountain development stage in the Meso-Cenozoic,with the tectonic evolution since Meso-Cenozoic particularly significant for the formation of most petroliferous basins in Eastern Asia.According to the geodynamical background since Yanshan of Eastern Asia experienced and the distinction among the different areas,Eastern Asia can be divided into 7 tectonic domains： western compressive tectonic domain,western pediocratic tectonic domain,Qingzang-Qiangtang tectonic domain,centeral cratonic tectonic domain,subducted margin tectonic domain,eastern clroum-Pacific tectonic domain and Xing＇ an-Mengolia tectonic domain.This division is meaningful for understanding basins forming mechanism as well as for analogue analysis between basins for prediction of petroleum resources.

关 键 词：东亚 构造演化 构造域 划分 

分 类 号：P548[天文地球—构造地质学]