G. Dhanunjaya Naidu's Deep Crustal Structure of the Son-Narmada-Tapti Lineament, PDF

By G. Dhanunjaya Naidu

With a size of approximately 1200 km, the Son-Narmada-Tapti Lineament (NSL) is among the such a lot well-liked geomorphic positive aspects within the Indian subcontinent. Anomalous conductive our bodies are delineated at mid-lower crustal depths less than significant earthquake epicentral zones. The sector has been interpreted because the collision area of the Indian Plate with the Eurasian Plate. The NSL area is for that reason additionally recognized to be the second one most vital tectonic characteristic within the Indian geology, after the Himalayas.

The current thesis describes major new perception into the seismotectonics of this primary India tectonic area, in line with thorough magnetotelluric experiences. the most targets of the current examine are: (i) to delineate subtrappean sediments around the NSL area alongside 4 various traverses, (ii) to appreciate the characterization of geo-electrical constitution of the crust and view the character of geo-electrical signatures of the identified faults, (iii) to combine the consequences with different geophysical facts corresponding to seismicity, gravity and warmth circulation, so as to comprehend the tectonic situation of the zone.

Deep electromagnetic (magnetotelluric) analyses have been built-in during this research with gravity, seismic and warmth stream reviews and detailed, delineated deep crustal positive factors. The ensuing excessive conductivity is justified with the presence of fluids at mid-lower crustal depths. The migration of those fluids from mantle to mid-lower crustal depths via pre-existing brittle fracture/fault zones have been evidently brought on by the plume concerning the Deccan volcanism. Migration of the fluids generated the next fluid strain alongside the faults and led to earthquakes.

Based at the geo-electric sections derived alongside the 4 traverses of the Narmada-Son Lineament quarter, the current examine offers vital clues at the subduction/collision heritage during this very important tectonic zone.

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Deep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India (Springer Theses) by G. Dhanunjaya Naidu

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