naa a22 4500 510755178 CHVBK 20180411083120.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s12594-013-0102-y doi (NATIONALLICENCE)springer-10.1007/s12594-013-0102-y Was Archean Dharwar Craton ever stable? A seismic perspective [Elektronische Daten] [O. Pandey, Nimisha Vedanti, R. Srivastava, V. Uma] Indian shield comprising a number of Archean-Proterozoic cratons, forms one of the most dynamic, sheared and deformed continental segment amongst all stable areas of the earth. However, for a long time it has been believed that its lithosphere remained unaffected by episodic tectono-thermal and volcanic perturbations. Using available seismic data, an attempt has been made to study the seismic structure of the south Indian shield in order to examine the effects of such mantle processes on its overall crust-mantle structure. Our study suggests that by and large, Indian crust is intermediate to mafic in composition. On an average, only a couple of kilometers of the initially formed upper (granitic-gneissic) crust now remains in place and a thick chunk of the original lower crust has been consumed by the underlying thermally buoyant mantle due to sub-crustal erosion and then subsequently replaced by possibly as much as about 16 km thick magma layer on either side of the Moho. This study throws a new light on the geologic and geodynamic evolution of this region and contradicts the hitherto believed paleo-stability of the Indian shield. Geological Society of India, 2013 Seismic structure nationallicence Mantle processes nationallicence Underplated Magma nationallicence Crustal Exhumation nationallicence Dharwar Craton nationallicence Pandey O. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut Vedanti Nimisha CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut Srivastava R. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut Uma V. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut Journal of the Geological Society of India Springer-Verlag 81/6(2013-06-01), 774-780 0016-7622 81:6<774 2013 81 12594 https://doi.org/10.1007/s12594-013-0102-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0102-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pandey O. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut NATIONALLICENCE 700 1- Vedanti Nimisha CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut NATIONALLICENCE 700 1- Srivastava R. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut NATIONALLICENCE 700 1- Uma V. CSIR-National Geophysical Research Institute, Uppal Road, 500 007, Hyderabad, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer-Verlag 81/6(2013-06-01), 774-780 0016-7622 81:6<774 2013 81 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer