| 攀西地区地壳和上地幔中的电性结构 |
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| 引用本文： | 孔祥儒,刘士杰,窦秦川,张建军,苏先英,李宗舜,周成炳.攀西地区地壳和上地幔中的电性结构[J].地球物理学报,1987,30(2):136-143. |
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| 作者姓名： | 孔祥儒 刘士杰 窦秦川 张建军 苏先英 李宗舜 周成炳 |
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| 作者单位： | 中国科学院地球物理研究所, 北京 |
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| 摘 要： | 攀西地区大地电磁测深结果表明,这一地区可划分为三个条带:丽江至华坪、华坪至会理和会理至巧家。三个条带内电性结构有明显差异,反映出本地区地质构造十分复杂。测区内沉积层厚度为3-5km,其电阻率小于30Ωm。在地壳中约33km深处有一低阻层,厚度为5-12km。在红格和华坪两测点之下,深度为82-90km处出现第二个低阻层,它们指示出软流层顶部埋深。
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| 关 键 词： | 攀西裂谷 大地电磁测深 电导率结构 低阻层 |
| 收稿时间： | 1986-02-24 |
ELECTRICAL CONDUCTIVITY STRUCTURE IN THE CRUST AND UPPER MANTLE IN THE REGION OF PAN-XI RIFT |
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| KONG XIANG-RU LIU SHI-JIE DOU CHING-CHUAN ZHANG JIAN-JUN SU XIAN-YINGLI ZONG-SHUN ZHOU CHENG-BIN.ELECTRICAL CONDUCTIVITY STRUCTURE IN THE CRUST AND UPPER MANTLE IN THE REGION OF PAN-XI RIFT[J].Chinese Journal of Geophysics,1987,30(2):136-143. |
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| Authors: | KONG XIANG-RU LIU SHI-JIE DOU CHING-CHUAN ZHANG JIAN-JUN SU XIAN-YINGLI ZONG-SHUN ZHOU CHENG-BIN |
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| Institution: | Institute of Geophysics, Acadtmia Sinica, Beijing |
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| Abstract: | The Pan-Xi area can be divided into three zones according to MT results: Lijian to Hua-ping, Huaping to Huili and Huili to Qiaojia. In these three zones the quite different electrical structures indicate very complicated geological structure. In this area there is a sediment top layer with 3-5 km thicknesses and low resistivity less 30 ohm-m. In the crust there is a low resistivity layer with 5-12 km thickness at 33 km depth. Beneath Hongge and Huaping the second low resistivity layer at 82-90 km depth indicate the depth of the asthenosphere top. |
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| Keywords: | Pan-Xi Rift Magnetotelluric deep sounding Electric conductivity Low resistivity layer |
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