摘要
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.
Through studying of magnetotelluric sounding on Qushui-Duodi profile in Lhasa basin, the deep structures of Lhasa basin are reconstructed. Granite is extensively distributed in the upper crust. The depth of Moho surface is about 70 kilometers. There is a high conductivity layer in the crust, the top surface of the layer rises gradually from south to north, and the thickness of the layer is 20~30 kilometers. There exists a deep fault near Sangda area.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第5期1173-1178,共6页
Chinese Journal of Geophysics
基金
国家发改委城市活断层探测项目
国家973项目(2002CB412604)
国家自然科学基金项目(40774070)资助
关键词
拉萨盆地
MT探测
壳幔结构
Lhasa basin MT exploration Crust-mantle structure
