| 昆仑山脉和喀喇昆仑山脉地区的地壳上地幔电性结构特征 |
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| 引用本文： | 秦国卿,李海孝.昆仑山脉和喀喇昆仑山脉地区的地壳上地幔电性结构特征[J].地球物理学报,1994,37(2):193-199. |
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| 作者姓名： | 秦国卿 李海孝 |
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| 作者单位： | 1. 国家地震局地质研究所, 北京 100029;
2. 河北省地震局怀来地震台, 河北省怀来 075400 |
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| 摘 要： | 本文简介从新疆叶城至西藏狮泉河的大地电磁测深剖面．它北起塔里木盆地，横跨昆仑山脉和喀喇昆仑山脉地区到冈底斯西段，全长８００余公里．探测结果表明，不同测点的地壳内部有的有两个低阻层，有的则只有一个低阻层，壳内第１低阻层的埋藏深度约１０－３５ｋｍ，第２低阻层的埋藏深度约３０－６５ｋｍ。在南昆仑缝合带以南，壳内低阻层的埋藏深度有从南向北不断加深的趋势；而在其以北的壳内低阻层的埋藏深度则与此相反．上地幔第１低阻层的埋藏深度约在１００－１５０ｋｍ之间，第２低阻层的埋藏深度约在３５０－５５０ｋｍ之间．
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| 关 键 词： | 大地电磁测深 地壳上地幔电性结构 昆仑山脉和喀喇昆仑山脉地区 |
| 收稿时间： | 1993-02-10 |
THE CHARACTERISTICS OF THE ELECTRICAL STRUCTURE OF THE CRUST AND UPPER MANTLE IN THE REGION OF THE KUNLUN AND THE KARAKORUM MOUNTAINS |
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| QIN GUO-QING, CHEN JIU-HUI, LIU DA-JIAN, GU QUN, XIONG YANG-WU.THE CHARACTERISTICS OF THE ELECTRICAL STRUCTURE OF THE CRUST AND UPPER MANTLE IN THE REGION OF THE KUNLUN AND THE KARAKORUM MOUNTAINS[J].Chinese Journal of Geophysics,1994,37(2):193-199. |
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| Authors: | QIN GUO-QING CHEN JIU-HUI LIU DA-JIAN GU QUN XIONG YANG-WU |
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| Institution: | 1. Institute of Geology, State Seismological Bureau, Beijing 100029;
2. Huailai Observatory, Hebei Seismological Bureau, Huailai 075400 |
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| Abstract: | A profile of magnetotelluric sounding is presented in this paper, which travels from Yecheng, Xinjiang province to Shiquanhe, Tibet. The profile crosses the Kunlun Mountains and Karakorun Mountains from the Tarim basin to the western Gandisi. The total length of the profile is more than 800 km.The results of the investigation show that there are two low resistive layers in the crust (LRLC) in some area under the profile, but only one in other area. The buried depth of the first LRLC ranges from 10 km to 35 km, while that of the second from 30 to 65km. The buried depth of LRLC for the three tectonic units located on the south of Mazar-Kagsiwa main fault increases from the south to the north, while for the two tectonic units to the north of the fault, on the contrary,it decreases from the south to the north. The buried depth for the first low resistive layer in upper mantle (LRLUM) is about 100 to 150 km, and for the second LRLUM, it is about 350 to 500km. |
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| Keywords: | Magnetotelluric the Region of the Kunlun and the Karakorum Mountains the Electrical Structure of the crust and the upper mantle |
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