Details of the Abstract
| Title of paper | Three-dimensional Magnetotelluric Imaging of West Kunlun Tectonic Zone |
| List of authors | Author, Wu, X., Yang, B., Wen, G. |
| Affiliation(s) | School of Earth Sciences, Zhejiang University, Hangzhou, China. |
| Summary | The West Kunlun Tectonic zone(WKTZ) is the collision front of the Asian plate and the Indian plate on the west side of the Tibetan Plateau. In this study, we used 295 MT stations to invert the three-dimensional electrical structure in this area, covering the southwest of the Tarim Basin to the WKTZ. The result model shows that there are three major conductive anomalies (C1, C2 and C3): C1 is the magma chamber of the Cenozoic volcano and has a connecting channel with the deeper C2; C2 is divided into two parts, shallow ( <50km) and deep (50km~150km), the shallow C2 is inclined to the south, which corresponds well to the Jinsha suture, and the deep C2 is inclined to the north, mainly distributed in the lower crust-upper mantle scale. C3 is inclined to the north as a whole, and corresponds well to the Bangong-Nujiang suture. The resistivity data are sensitive to the margin of the crust slab, and there is a large-scale low-angle north-dipping low-resistance anomaly (deep C2) at the lower crust-upper mantle scale in the southern part of the West Kunlun Mountains, which is speculated to be the subducted Indian plate interface, so we presume that the subduction front of the Indian plate may have reached beneath the Kangxiwa fault (about 37°N). |
| Session Keyword | 4.0 Tectonics and geodynamics, including magmatism |
| File upload |
4.0_three-dimensional_magneto_xiaolei.pdf
|