福州地区地壳结构的地震转换波测深研究

地震地质 ›› 1993, Vol. 15 ›› Issue (2): 174-180.

福州地区地壳结构的地震转换波测深研究

邵学钟¹, 顾忠华², 张家茹¹

1. 国家地震局地质研究所, 北京 100029;
2. 福建省物理化学勘探大队地震分队, 福州 350013

收稿日期:1990-08-31 修回日期:1992-11-30 出版日期:1993-06-02 发布日期:2009-11-25

INVESTIGATION OF CRUST STRUCTURE IN FUZHOU AREA BY MEANS OF CONVERTED WAVES OF EARTHQUAKES

Shao Xuezhong¹, Gu Zhonghua², Zhang Jiaru¹

1. Institute of Geology, SSB, Beijing 100029;
2. Geophysical and chemical prospecting brigade of Fujian Provence, Fuzhou 350013.

Received:1990-08-31 Revised:1992-11-30 Online:1993-06-02 Published:2009-11-25

摘要/Abstract

摘要： 地震转换波测深法首次在我国东南沿海的福州地区进行地壳深部构造的探测,得出了该区地壳中的4个主要界面的构造形态图和沿北东方向穿越本区的地壳深部构造剖面图。查明闽江断裂由两条北西向产状较陡的超壳断裂组成,福州断陷盆地的深部上地壳G界面呈条带状下沉,下地壳C、C₁界面和M面及壳内低速层均相对上隆,这一结果为解释本区高地热异常提供了深部依据。

关键词: 福建, 地震转换波测深, 地壳深部构造

Abstract: The method of deep sounding by converted waves of earthquakes was used for the first time in investigation of deep crust structures in Fuzhou area of coast Southeast China. A cross-section of deep crust structure with NE direction and four contour maps of major crust boundaries for the area have been obtained. It is revealed that the Minjiang fault consists of two steep deep-seated faults with NW strike, and that the deep structure of Fuzhou basin is characterized by the belt-shaped subsidence of the boundary G in upper crust and the relative uplift ing of the boundary C, C₁, M and low velocity layer in the middle and lower crust. The results obtained have been served as a basis for the interpratation of the anomaly of high heat flow in Fuzhou region.

Key words: Fujian, Deep sounding by converted waves of earthquakes, Deep crust structure

邵学钟, 顾忠华, 张家茹. 福州地区地壳结构的地震转换波测深研究[J]. 地震地质, 1993, 15(2): 174-180.

Shao Xuezhong, Gu Zhonghua, Zhang Jiaru. INVESTIGATION OF CRUST STRUCTURE IN FUZHOU AREA BY MEANS OF CONVERTED WAVES OF EARTHQUAKES[J]. SEISMOLOGY AND GEOLOGY, 1993, 15(2): 174-180.

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