Physics
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pepi...73..153t&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 73, Issue 3-4, p. 153-162.
Physics
2
Scientific paper
Deep crustal exposures on various continental platforms have recently attracted much attention with regard to their evolution and relevance to present-day tectonics. The granulite terrain of the southern part of peninsular India exhibits unique characteristics: the small dimensions bounded by two rifted margins, high relief as a result of recent uplift, and anomalous gravity, magnetic and electromagnetic signatures. The geophysical anomalies over this region have been cohered to produce a tentative geodynamic model in which the break-up of Gondwana (150 my BP), subsequent rifting of the western margin of India (70 my BP) and the collision with Asia and post-collision stresses (50 my BP) play a role in the remobilisation of the crust-mantle regime of South India. The geophysical signatures over this deep crustal cross-section differ markedly from those of its counterparts in other parts of the world and thus may reflect the consequences of recent remobilisation rather than features frozen-in since Proterozoic time. In this sense, deep crustal imaging of southern peninsular India may differ from that in other continental platforms.
Nagarajan Nandini
Thakur N. K.
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