中国东南地区地壳演化、分区及地震成因特点
|
摘要
本文利用物质分异的理论，阐明了不同地壳类型的相互转化，进而讨论了中国东南地区地壳演化基本特征。在此基础上对该区地壳进行了分区，并分析了各个分区构造特征与地震的关系。结果表明，该区内陆深大断裂带下部地壳和上地慢物质分异微弱，显示出断裂活动强度低，地震活动平静；东部地区物质分异强烈，靠近菲律宾板块消减带，断裂活动和地震活动显著增强。
In the light of the theory of material differentiation,this paper describes the transformation of crustal types from one into the other and discusses the fundamental characteristics of crustal evolution in southeast China,On this basis,southeast China is divided into different crustal divisions,and the relations between tectonic feature and seismology are discussed.The results show that material differentiation has been taking place only weakly in major deep fracture zong of southeast China inland,resulting in a low intensity of fracture activity and in the qui-escency in seismicity;whereas in the eastern part being close to the subduction zone of Philippine Plate,material differentiation is strong,fracture activity and seismicity are significantly strengthening.
In the light of the theory of material differentiation,this paper describes the transformation of crustal types from one into the other and discusses the fundamental characteristics of crustal evolution in southeast China,On this basis,southeast China is divided into different crustal divisions,and the relations between tectonic feature and seismology are discussed.The results show that material differentiation has been taking place only weakly in major deep fracture zong of southeast China inland,resulting in a low intensity of fracture activity and in the qui-escency in seismicity;whereas in the eastern part being close to the subduction zone of Philippine Plate,material differentiation is strong,fracture activity and seismicity are significantly strengthening.
引文
1南京大学地质系．华南不同时代花岗岩类及其与成矿关系．北京：科学出版社，l981．2王鸿桢．中国华南地区地壳构造发展的轮廓，华南地区古大陆边缘构造史论文集．武汉：武汉地质学院出版社，1986．3乔秀夫，等．华南晚前寒武纪古板块构造，中国及其邻区大地构造论文集．北京：地质出版社，1980．4郭令智．华南大地构造格架和地壳演化，第26届国际地质大会构造地质论文集．北京：地质出版社，1980．5陈国达，关尹之，陈家超，等．桂西地槽区．中南矿冶学院学报，1963，校庆专刊．6黄树峰．政和一大浦断裂北段活动历史及控岩作用初探．福建地质，1984，3（2）．7刘光勋，等．中国东部活动断裂的现代构造运动．地震地质，1982，4（2）．8杨森楠．华南燕山阶段古构造特征，华南地区古大陆边缘构造史论文集．武汉：武汉地质学院出版社，1986．9章惠芳．中国东南沿海地区泉汕爆破深地震测深资料的再解释．中国地震，1988，4（2）．10郭增建，秦保燕，等．震中迁移现象．地震战线，1377，（3）．邹和平，海南岛北部晚新生代构造演化，1984．ll陈家超，刘江．地壳下部及上地幔物质分异作用对地震成因机制的影响．西北地震学报，1985，7（1）．12中国科学院南海海洋研究所海洋地质构造研究室．南海地质构造与陆缘扩张．北京：科学出版社，1988．13郭增建，秦保燕，等．新生代以来玄武岩喷发区与震中迁移始发点─—兼论三层模式．西北地震学报，1988，10（增刊）．14刘光勋，等．中国东部活动断裂的现代构造运动．地震地质，1982，4（4）．
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心