000 03948nam a22005295i 4500
001 978-3-642-28442-7
003 DE-He213
005 20140220083312.0
007 cr nn 008mamaa
008 120412s2012 gw | s |||| 0|eng d
020 _a9783642284427
_9978-3-642-28442-7
024 7 _a10.1007/978-3-642-28442-7
_2doi
050 4 _aQC801-809
072 7 _aPHVG
_2bicssc
072 7 _aSCI032000
_2bisacsh
082 0 4 _a550
_223
082 0 4 _a526.1
_223
100 1 _aNaidu, G. Dhanunjaya.
_eauthor.
245 1 0 _aDeep Crustal Structure of the Son-Narmada-Tapti Lineament, Central India
_h[electronic resource] /
_cby G. Dhanunjaya Naidu.
264 1 _aBerlin, Heidelberg :
_bSpringer Berlin Heidelberg,
_c2012.
300 _aXVI, 147p. 91 illus., 85 illus. in color.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5053
505 0 _aMagnetotellurics - Basic theoretical concepts -- MT Data Acquisition and Processing -- Geo-electric Crustal Structure along the Sanawadchopda Traverse across the NSL zone -- Andharwadibalapur Traverse -- Hoshangabadner Traverse -- Galangibrahmana-Wada Traverse.
520 _aWith a length of about 1200 km, the Son-Narmada-Tapti Lineament (NSL) is one of the most prominent geomorphic features in the Indian subcontinent. Anomalous conductive bodies are delineated at mid-lower crustal depths below major earthquake epicentral zones. The region has been interpreted as the collision zone of the Indian Plate with the Eurasian Plate. The NSL zone is therefore also known to be the second most important tectonic feature, after the Himalayas, in the Indian geology. The present thesis describes significant new insight into the seismotectonics of this Central India tectonic zone, based on thorough magnetotelluric studies. The main objectives of the present study are: (i) to delineate subtrappean sediments across the NSL region along four different traverses, (ii) to understand the characterization of geo-electrical structure of the crust and examine the nature of geo-electrical signatures of the known faults, (iii) to integrate the results with other geophysical data such as seismicity, gravity and heat flow, in order to understand the tectonic scenario of the region. Deep electromagnetic (magnetotelluric) analyses were integrated in this study with gravity, seismic and heat flow studies and distinct, delineated deep crustal features. The resulting high conductivity is justified with the presence of fluids at mid-lower crustal depths. The migration of these fluids from mantle to mid-lower crustal depths through pre-existing brittle fracture/fault zones were obviously caused by the plume related to the Deccan volcanism. Migration of the fluids generated a higher fluid pressure along the faults and resulted in earthquakes. Based on the geo-electric sections derived along the four traverses of the Narmada-Son Lineament Zone, the present study gives important clues on the subduction/collision history in this important tectonic zone.
650 0 _aGeography.
650 0 _aGeology.
650 0 _aGeologyxMathematics.
650 0 _aGeology, Structural.
650 0 _aPhysical geography.
650 1 4 _aEarth Sciences.
650 2 4 _aGeophysics/Geodesy.
650 2 4 _aStructural Geology.
650 2 4 _aGeophysics and Environmental Physics.
650 2 4 _aGeology.
650 2 4 _aQuantitative Geology.
710 2 _aSpringerLink (Online service)
773 0 _tSpringer eBooks
776 0 8 _iPrinted edition:
_z9783642284410
830 0 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5053
856 4 0 _uhttp://dx.doi.org/10.1007/978-3-642-28442-7
912 _aZDB-2-EES
999 _c102811
_d102811