【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。更多还原

【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.更多还原