| 山西五台山地区地壳深部结构特征研究 |
| |
| 引用本文： | 赵金仁,张先康,张成科,张建狮,刘宝峰,潘素珍.山西五台山地区地壳深部结构特征研究[J].地球物理学报,2006,49(1):123-129. |
| |
| 作者姓名： | 赵金仁 张先康 张成科 张建狮 刘宝峰 潘素珍 |
| |
| 作者单位： | 中国地震局地球物理勘探中心，郑州〓450002 |
| |
| 基金项目： | 国家自然科学重点基金项目（40334040）资助.中国地震局地球物理勘探中心论著编号RCEG200403. |
| |
| 摘 要： | 利用穿过山西断陷带及五台山区的宽角反射/折射地震测深剖面所获得的资料对该区地壳结构进行研究，结果表明：五台山地区地壳呈明显的分层结构，上下地壳的分界是以壳内较为连续可靠的反射波P3所反映的界面为标志的，上地壳的厚度为23～28km，莫霍界面的深度为39～43km，五台山区是本区M界面最深的地区；地壳结构非均匀变化强烈的地区发生在五台山及其邻近地区，上地壳内较大范围低速异常体的存在和壳内强反射波组的出现可视为地壳深部岩浆活动的一种标志；壳内界面的中断、Pm波的局部不连续和地壳深断裂的存在等诸多现象均表明该地区地壳结构发生了强烈的挤压、变形和构造活动，从而形成了该地区复杂的地形地貌和地壳深浅部异常的结构特征.
|
| 关 键 词： | 山西断陷带及五台山 地壳深部异常结构 地震测深 |
| 文章编号： | 0001-5733（2006）01-0123-07 |
| 收稿时间： | 2004-12-10 |
| 修稿时间： | 2004-12-102005-10-13 |
Features of deep crustal structure beneath the Wutai mountain area of Shanxi province |
| |
| ZHAO Jin-Ren,ZHANG Xian-Kang,ZHANG Cheng-Ke,ZHANG Jian-Shi,LIU Bao-Feng,PAN Su-Zhen.Features of deep crustal structure beneath the Wutai mountain area of Shanxi province[J].Chinese Journal of Geophysics,2006,49(1):123-129. |
| |
| Authors: | ZHAO Jin-Ren ZHANG Xian-Kang ZHANG Cheng-Ke ZHANG Jian-Shi LIU Bao-Feng PAN Su-Zhen |
| |
| Institution: | Geophysical Exploration Center, China Earthquake Administration, Zhengzhou 450002, China |
| |
| Abstract: | The crustal structure was investigated with Deep Seismic Sounding(DSS) data obtained from wide angle reflection/refraction profiles which extent through the Shanxi faulted depression belt and the Wutai mountain area. The results show that the crust represents obviously layered structures in the areas. The boundary interface between lower and upper crust is determined by means of reliable reflected wave group P3, which can be traced continuously in the crust. The thickness of the upper crust is 23～28km and the depth of Moho is 39～43km. The deepest Moho of this region located beneath the Wutai mountain area. In the Wutai mountain and its adjacent areas, the crust structures have strong inhomogeneous characteristics. The existence of abnormal low velocity bodies in the uppercrust in a larger scope and strong reflected wave groups in the crust maybe regarded as a sign of magma activity in the deep crust. Based on breaking of interior crust interfaces and local discontinuation of the seismic wave group Pm along with existence of deep faults, it is suggested that the crust in this region has experienced violent pressure, deformation and tectonic activities, which resulted in complex topography and anomalous structural features within the crust. |
| |
| Keywords: | Shanxi faulted depression belt and Wutai mountain Anomalous structure in deep crust Deep seismic sounding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
