The evolution of the Vindhyan basin vis-à-vis the Narmada-Son lineament, central India, from deep seismic soundings
1989; Elsevier BV; Volume: 162; Issue: 3-4 Linguagem: Inglês
10.1016/0040-1951(89)90249-7
ISSN1879-3266
AutoresK. L. Kaila, P.R.K. Murty, D.M. Mall,
Tópico(s)Geological and Geophysical Studies
ResumoThe evolution of the Vindhyan basin has been studied from deep seismic soundings. Block tectonics appear to be active throughout the geological history in this region. The crust is divided into four major blocks by deep faults at Narsinghgarh, Katangi and Jabalpur. The crustal block between Narsinghgarh and Katangi forms a graben in the crystalline basement, giving rise to the great Vindhyan basin in which Precambrian Vindhyan sediments of about 5.5 km thickness are deposited. The crustal block between Katangi and Jabalpur is a horst block which represents the Narmada-Son lineament. A crustal depth section obtained from wide-angle reflections shows a large number of reflector segments up to the Mono boundary, indicating crustal heterogeneity. The boundary faults at the northern and the southern ends of the Vindhyan basin extend up to the Moho. The crustal thickness varies from 39.5 to 45 km.
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