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通过对拉萨盆地曲水夺底大地电磁测深剖面的研究,揭示了拉萨盆地深部地质构造特征.上地壳广泛分布花岗岩体,莫霍面深度大约70 km.壳内发育一个高导层,其顶界面埋深呈现南深北浅特点,厚度大约20~30 km,桑达附近存在一条深大断裂.
The deep geologic tectonic features of the Lhasa Basin are revealed through the study of the geomagnetic deep-sounding profile of Qushui buried bottom in the Lhasa Basin.The granite body is widely distributed in the upper crust with a depth of about 70 km and a high-conductivity layer is developed in the crust, The buried depth of the interface is characterized by deep north and south shallow with a thickness of about 20-30 km and a deep and large fault near SEDA.