Geophysical imaging of the Reunion plume mantle conduits and imprints of Precambrian structures with Phanerozoic thermal overprints in central-western India
| Autor: | Kizhakkekara Kunjavaran, A., Koppireddy, V., K Patro, P., Manglik, A., Gupta, A., E. Rao, P., Durgam, H., Prabhakar Bhimavarapu, M., Basina Durga Naga, K. |
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| Rok vydání: | 2023 |
| Zdroj: | XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
| DOI: | 10.57757/iugg23-0824 |
| Popis: | The central-western Indian region of the Indian shield encapsulates the Archean to recent tectonic evolution history of the Indian subcontinent. The iconic vast Deccan flood basalt cover, produced by the youngest (~65 Ma) thermal plume (Reunion) uprising under the Indian lithosphere, and Proterozoic to Quaternary sedimentary formations mostly obscure the Precambrian geology and lithosphere scale alterations induced by Phanerozoic tectonothermal events in the region. Therefore, the deep probing magnetotelluric (MT) geophysical tool is employed to image the lithosphere architecture for the purpose of unraveling the mysterious subsurface geology and unfolding the tectonic history of the region. Besides, the study aims to map any major upper mantle pathways of the Deccan magma ascent for which no explicit geophysical revelation yet made. A holistic three-dimensional (3D) lithospheric resistivity model for the central-western India, obtained from 3D inversion of long-period MT and tipper data at 146 stations with ~50 km grid spacing, showed two important high conductive ( The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) |
| Databáze: | OpenAIRE |
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