Regional Bouguer Gravity Analysis for Sub–Surface Topography of the Crustal Configuration in the Southern Part of Deccan Volcanic Province India.

BHAGYA.K; RAMADASS.G

Volume : V, Issue : I, January - 2015

Regional Bouguer Gravity Analysis for Sub–Surface Topography of the Crustal Configuration in the Southern Part of Deccan Volcanic Province India.

Bhagya. K, Ramadass. G

Abstract :

Regional gravity data have been utilized to evaluate the structural trends in parts of Deccan Volcanic Province(DVP) study region .The study area represent the western part of the India, Three deep seated faults, one running N&ndash;S, NW&ndash;SE and four gravity highs and lows were delineated from qualitative analysis of Regional Bouguer Gravity data. Tectonic difference was elucidated on four layer earth and the depth extent and disposition of the supra crustal (Basalt &amp; Sediment), a peninsular gneiss layer that forms the basement to the supra crustal and upper and deep layers of densities 2.65gm/cc,2.72gm/cc,2.82gm/cc and 3.3gm/cc respectively. The crustal configuration of the region is computed down to the Moho. The basaltic layer thickness varying from 0.2 km to 1.3 km and sediment layer thickness varying from 0.2 km to 1.4 km, the peninsular layer thickness varying from 1.6 to 10 km, upper crustal layer, varies between 10 to 22km and deep crustal layer 22 to 39 km respectively. The folded nature of the sub surface layer is evident.