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详细信息
- 责任者：Huan Rui (Oilfiled Exploration and Development DEPT ; Beijing 100728 ; China) ; Li Aiyong
- 刊名：Northwestern Seismological Journal
- 出版年：2010
- 卷期：32(4)
- 关键词：大地电磁测深 ; telluric electromagnetic sounding ; 地壳结构 ; crustal structure ; 青海 ; Qinghai Province ; 甘肃 ; Gansu Province ; 四川 ; Sichuan Province
- 页码：p.334-338
- 图表：illus., 9 refs.
- 分类号：1600
- issnNo：ISSN1000-0844
- isbnNo：CN62-1048/P
摘要
The magnetotelluric exploration profile of Maqu-Beichuan shows the extent and structure characters of upper crust,lower crust and upper mantle along the sections.First,there exists a large nappe structure from north China block to Longmenshan tectonic belt between the overlying strata of upper crust and basement.Second,the thickness of upper crust,especially the one of crystalline basement,limits the stability of blocks.Third,the relief of low-resistivity layer in the crust and the swell or sag of Moho are close correlative to the stability of blocks.