| Abstract Submission No. | ABS-3.1-0210 |
| Title of Abstract | Finite element modelling of tectonic stress and deformation of Himalayan-Tibet to Zagros-Iranian region |
| Authors | R Yadav*, S Singh |
| Organisation | CSIR-National Geophysical Research Institute, Hyderabad, India |
| Address | room no. 142, Extension building, CSIR-National Geophysical Research Institute, Hyderabad Hyderabad, Telangana, India Pincode: 500007 E-mail: shamgpbhu@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | The Himalayan and Zagros regions are continental-continental collision zones that evolved orogenic belts with both diffuse and localized deformation between the Indian-Arabian and Eurasian plates. This study utilized finite element modeling to assess the stresses causing deformation in the Himalaya-Tibet and Zagros-Iran regions, focusing on gravitational potential energy (GPE) and basal drag from mantle convection with thin sheet approximation. Results indicate that in central and eastern Tibet, variations in GPE from topographic load significantly influence stress and deformation, more so than in the Zagros-Iran region. While mantle contributions are crucial for matching observed deformation in southwestern Tibet and the Pamir-Hindu Kush, the simpler Zagros-Iran region can often be explained by mantle contributions alone. However, uncertainties in the structure of the lithosphere and mantle complicate understanding their relative impacts in the Himalaya-Tibet area. |
| Keywords | tectonic stress, deformation, GPE, Mantle convection |