根据形成地质作用对中国大陆岩石圈作构造分区  被引量:11

Tectonic Divisions of the Chinese Continental Lithosphere Based on Forming Tectonic Processes

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作  者:杨文采[1] 于常青[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4期709-716,共8页Geological Review

基  金:中国地质调查项目(编号12120113093800)的成果

摘  要:在综合评述前人关于大陆板块内部大地构造单元划分的基础上,讨论了以大陆岩石圈地质作用序列对亚欧大陆板块内部二级大地构造单元划分的准则与方法。相邻单元之间地壳生成演化作用序列不同,造成地层和岩石圈构造属性不同。基于板块运动的规律,可以根据地层和构造属性不同特征推断构造单元演化作用序列,并依据岩石测年资料划分大陆岩石圈构造单元。据此,大陆板块可划分为四个二级构造单元,包括克拉通、大陆碰撞造山带、大陆俯冲增生带和叠复构造单元。中国大陆板块的克拉通包括华北、扬子、塔里木和华夏四个;大陆碰撞造山带包括天山—西拉木伦河、昆仑—秦岭—大别、喜马拉雅、萍乡—江山—绍兴和台湾五个。大陆俯冲增生带包括吉黑、准噶尔、柴达木祁连、羌塘—拉萨—松潘和江南五个。这种分区同时把形成时代和区域构造形成地质作用作为区划的主要根据,体现了构造单元的基本属性。After reviewing previous tectonic divisions about continental tectonic units,we discuss the proper rules and method for division of continental lithosphere based on the sequence of regional tectonic processes. The differences of evolutional processes between adjacent tectonic units cause the differences on regional stratigraphic and structural attributes,which can be used in return to infer the sequence of regional tectonic processes under the guide of plate tectonics and geological dating of rocks. As the results,the continental lithosphere can be divided into following four second-order tectonic units: craton,continental collision zones,subduction and accretion zones,and superimposed units. The Chinse continent contains four craton units,they are the North China,Yangtze,Tarim and Cathaysia( Huaxia) cratons. Five continental collisional zones in China can be divided,including Tianshan Mountains—West Lamulun River, Kunlun—Qingling—Dabie, Himalaya, Pingxiang—Jiangshan—Shaoxing and Taiwan. Five subduction and accretion zones can also be divided,including Jilin—Heilongjiang,Jungaria,Qaidam—Qilian,Qiangtang—Lhasa—Songpan and Jiangnan( south Yangtze River). This division of tectonic units characterizes both the geological ages and forming processes,embodying the most important attributes of a second-order tectonic units.

关 键 词:大陆岩石圈 构造分区 中国 克拉通 大陆碰撞造山带 大陆俯冲增生带 

分 类 号:P544[天文地球—构造地质学]

 

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