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Title: | Upper crustal structure in the Torni-Purnad region, Central India using magnetotelluric studies |
Authors: | Rao, C.K. Gokarn, S.G. Singh, B.P. |
Keywords: | Upper crustal structure Magnetotelluric studies |
Issue Date: | 1995 |
Citation: | J.Geomag.Geoelectr., v. 47/4 , 1995, p.411-420 |
Abstract: | Magnetotelluric studies were conducted over a 100 km long NS profile in the Satpura range and Tapti basin. Data were collected at 18 stations in this region with an interstation spacing of 3-10 km. The geoelectric substructure was obtained using a two dimensional modelling technique and has indicated the presence of Deccan traps and Gondwana sediments overlying a rather complex granitic basement. Two distinct layers of Deccan basalts were delineated with a total thickness varying from 2000 m in the central part to about 300-1000 m on either sides of this NS trending profile. The thickness of the Gondwana sediments below the traps was observed to vary rather strongly in the range, 300-2000 m. Two vertical conductive zones were delineated corresponding to the Khandwa lineament and the Burhanpur tear but the sensitivity studies indicated a large degree of nonuniquness associated regarding the shape and vertical extent of these conductors. An interesting finding of these studies is the presence of a prism shaped body in the central part of the survey profile in the Satpura horst region at depths between 3.5 and 14 km with a resistivity of 20 ohm-m. The body had a lateral extent of 8 km at the top and 40 km at the bottom in the NS direction. This observation is discussed along with the other geophysical results in the Satpura and Tapti regions. |
URI: | http://localhost:8080/xmlui/handle/123456789/18 |
Appears in Collections: | SEG_Reprints |
Files in This Item:
File | Description | Size | Format | |
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RaoCK_GokarnSG_SinghBP_JGG_1995.pdf | 2.48 MB | Adobe PDF | View/Open |
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