河南林县地震区地壳深部构造背景探讨  

The Structure Features of Deep Crustal Structure in Seismic Area of Linxian, Henan Province

作　　者：赵金仁[1] 张先康[1] 张成科[1] 任青芳[1] 祝治平[1] 吴涛 

机构地区：[1]中国地震局地球物理勘探中心,中国郑州450002

出　　处：《中国地震》1999年第3期229-236,共8页Earthquake Research in China

摘　　要：利用菏泽-林县-长治剖面西段与河南省林县微震区有关的6个炮点(分支)的观测资料进行二维处理计算、解释和研究,结果表明:在林县震区的下方存在着M面断裂或构造异常带;壳内存在着明显的速度逆转;林县震区及其东侧的内黄隆起和西侧的太行山隆起壳幔结构与构造具有明显的差异;西浅东深的林县西断裂沿震源深度包络线向深部延伸与震区下方的近垂直的地壳断裂在15km深处交汇。In this paper, by means of two\|dimensional calculation, interpretation and study, the western section of Heze\|Linxian\|Changzhi and six shooting points related to the slight seismic area of Linxian, Henan Province has been used. The result shows as follows: Moho discontinuity fault or structural anomaly zone is existed beneath the seismic area in Linxian; Evident overturned velocity is existed obviously in the crust; There is evident difference of the crust\|mantle structure and tectonics in seismic area of Linxian, the convex of eastern Neihuang and the uprise of western Taihang Mountains; It is gathered at the depth of 15km that the shallow west and the deep east in Linxian extends to depth along the envelope curve and nearly vertical crustal fault beneath the seismic area.

关 键 词：林县 微震区 壳幔结构 深部断裂 地壳深部构造 

分 类 号：P542.5[天文地球—构造地质学] P315.2[天文地球—地质学]