STRUCTURAL INTERPRETATION OF THE KONKAN BASIN, SOUTHWESTERN CONTINENTAL-MARGIN OF INDIA, BASED ON MAGNETIC AND BATHYMETRIC DATA

Magnetic and bathymetric studies on the Konkan basin of the southweste rn continental margin of India reveal prominent NNW-SSE, NW-SE, ENE-WS W, and WNW-ESE structural trends. The crystalline basement occurs at a bout 5-6 km below the mean sea level. A mid-shelf basement ridge, a sh elf margin basin, and the northern extension of the Prathap Ridge comp lex are also inferred. The forces created by the sea-floor spreading a t Carlsberg Ridge since late Cretaceous appears to shape the present-d ay southwestern continental margin of India and caused the offsets in the structural features along the preexisting faults.