Nanda and others published tectonic framework of eastern ghats mobile belt. Implications for gondwana tectonics, gondwana research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Pdf eastern ghats mobile belt egmb, a polycyclic, high grade metamorphic terrane. Belt drives a belt is a looped strip of flexible material, used to mechanically link two or more rotating shafts. All structured data from the file and property namespaces is available under the creative commons cc0 license. The craton is composed of the dharwar batholith dominantly granitic, greenstone belts, intrusive volcanics, and middle proterozoic to more recent sedimentary basins ramakrishnan and vaidyanadhan. Magnetotelluric evidence on the southward extension of the.
The egmb exposes a deep crustal section through a composite orogenic belt that once formed part of the proterozoic mobile belt system within east antarctica and east india. Contrasting pressuretemperaturedeformation history across a vestigial craton mobile belt boundary. Files are available under licenses specified on their description page. Map of the eastern ghats belt showing various domains based on isotopic data of rickers et al. Charnockiteenderbiterocks orthopyroxene granulites of. Architecture and evolution of the central eastern ghats. The northwestern part of the eastern ghats mobile belt comprises a. They are largely undisturbed and free of intrusives. A structural and zircon upb shrimp study of the fold. Evolution of the continental crust in the proterozoic eastern ghats belt, india and new constraints for rodinia reconstruction. Pdf tectonic evolution of the eastern ghats belt, india. Proceedings of workshop on eastern ghats mobile belt. Fill missing links of lithospheric deformation between lambert and mahanadi rifts. Read structural architecture of the northern composite terrane, the eastern ghats mobile belt, india.
About cookies, including instructions on how to turn off cookies if you wish to do so. Pdf tectonic framework of eastern ghats mobile belt. The alkaline plutons are typically confined to the margin of the eastern ghats. Proterozoic age include the limpopo, mozambique, and damaran belts in africa, the labrador trough in canada, and the eastern ghats belt in india. This book summarizes the latest research on the structural geology of the mobile belts of the indian subcontinent including the himalayas, ne himalayas, bangladesh thrust belt, andaman subduction zone, the aravalli. Eastern ghats mobile belt, terrane boundary shear zone, fold thrust belt, rayner. We have collated geological and geochronological evidences from the cratonic blocks and the bounding orogenic belts to trace back the grenvillianage. Timing and dynamics of the juxtaposition of the eastern ghats. Pdf garnet mineral chemistry as a provenance indicator for. The mobile belt is characterised by a nappe structure consisting of the lathore group and turekela group nappes, which display distinctive lithological assemblages and deformational structures. Two major issues concerning the eastern ghats mobile belt egmb. Origin of graphite, and temperature of metamorphism in. Timing and dynamics of the juxtaposition of the eastern ghats mobile belt against the bhandara craton, india.
The western limit of the eastern ghats mobile belt overlying the bastar craton is demarcated by a shear zone, which in fact is a terrain boundary shear zone 16092011 4 16092011 5 16092011 6 gneissic complex with granites granulites belts kotridongargarh orogen isolated fold belts mafic dyke swarms proterozoic purana basins. Petrological evolution of the eastern ghats belt current. Osumilitemelt interactions in ultrahigh temperature. Tectonic evolution of the eastern ghats belt, india.
Tectonic juxtaposition of crust and continental growth during. A reappraisal of polymetamorphism in the eastern ghats belt. The deformation pattern of the western margin of the eastern ghats mobile belt reveals the overthrusting relationship of the mobile belt with the craton. The eastern ghats are made up of charnockites, granite gneiss, khondalites, metamorphic gneisses and quartzite rock formations. Patchy charnockite, arrested growths of charnockite and charnockitic relicts in orthopyroxene free quartzofeldspathic gneisses are significant indicators of tectonic and metamorphic conditions, especially the nature and activity of fluids mainly co. Proterozoic orogenic belts and rifting of indian cratons. Mantle deformation patterns and signatures of rift. Jul 01, 2000 read foldthrust belt geometry of the eastern ghats mobile belt, a structural study from its western margin, orissa, india, journal of african earth sciences on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Reaction textures and metamorphic evolution of sapphirine. Early archaean continental crust in the eastern ghats. A mobile belt is a synonym for orogenic belt, most often used for those earlier i. The mineralogy of nine recently discovered dykes vl1.
Ball, the geological survey of india provided a geological map of the egmb on 1. The sinapalli nappe is the lowermost nappe and rests over a tectonic contact on the archean granites and gneisses of the craton. The provenance of garnets from coastal sediments between the nagavali and vamsadhara river mouths, east coast of india were studied using garnet molecular proportions. The indian shield is a mosaic of few smaller cratons naqvi and rogers, 1987, welded together by major collisional sutures mobile belts.
Aug 10, 20 from the oxford dictionary of earth sciences. Mineralogy of the vattikod lamproite dykes, ramadugu. Geological society of india all rights reserved powered by informatics publishing limited free hits. Mozambique belt geological region, africa britannica. A structural and zircon upb shrimp study of the foldthrust belt and associated nepheline syenite plutons. Sensitive high resolution ion microprobe shrimp upb dating of zircon from basement granite gneisses and nepheline syenites of the sinapalli nappe, occurring along the northwestern margin of the eastern ghats mobile belt, indicate high grade. Read foldthrust belt geometry of the eastern ghats mobile belt, a structural study from its western margin, orissa, india, journal of african earth sciences on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Stratigraphy and tectonics of eastern ghat mobile belt part 14 by prof. Contrasting pressuretemperaturedeformation history. Sapphirine granulites from panasapattu, eastern ghats belt. Madhurawada dome in the eastern ghats mobile belt is formed by a tectonic arrangement with the khondalite suite and quartz archean rocks along the eastern ghats north of visakhapatnam. To the east is the philippine trench and its northern associate, the east luzon trench which subducts philippine sea plate the philippine mobile belt. This mobile belt is considered to lie between the archean indian craton and the eastantarctic craton in gondwanaland.
Pdf evolution of the continental crust in the proterozoic. The proterozoic eastern ghats mobile belt egmb bordering the archaean dharwar. However, recent findings suggest that synkinematic development of granulites took place in a compressional tectonic regime and that granulite facies metamorphism resulted from crustal thickening. It offers essential information on deformational structures in the. Deformation history of the nw salient of the eastern ghats mobile. Archean and proterozoic granitic rocks are the principal record of such changes. Apr 06, 2019 the arcuate eastern margin is marked by a prominent boundary thrust, which is parallel to the nellore schist belt, eastern ghats mobile belt and the east coast. Several small relict areas, spanning a few hundred kilometres across, exist within or against phanerozoic orogenic belts and include. Read large lateral ramp in the foldthrust belts of mesoproterozoic eastern ghats mobile belt, eastern india, gondwana research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The eastern ghats mobile belt egmb is a proterozoic granulite belt extending along the east coast of peninsular india. Orogenic belts during precambrian period formed due to collision of cratons. The data plot in two different clusters on a concordia diagram figure 8.
The zager licence is situated within the neoproterozoic nakfa terrane of the arabian nubian shield, a highly prospective mobile belt of metasedimentary and metavolcanic rocks which stretches across northern and western ethiopia, eritrea, sudan, egypt and across the western gulf. Sep 19, 2019 proterozoic cuddapah basin, on the eastern margin of the dharwar craton is an intracratonic basin of the indian shield fig. Evidence of fossil anisotropy related to collision and rifting episodes of supercontinents. Stratigraphy and tectonics of eastern ghat mobile belt. Mobile belt article about mobile belt by the free dictionary. Foldthrustbelt structure the proterozoic eastern ghats. Pdf patchy charnockites from the eastern ghats mobile.
Magnetotelluric evidence on the southward extension of the eastern. Ahuja 2007, timing and dynamics of the juxtaposition of the eastern ghats mobile belt against the bhandara craton, india. The sinapalli nappe is the lowermost nappe and rests over a tectonic contact on. Ultrahigh temperature metamorphism of metapelitic granulites. Vl8 and vl10 in the vicinity of vattikod village, nalgonda district in telangana state is described. Abstract 1 sensitive high resolution ion microprobe shrimp upb dating of zircon from basement granite gneisses and nepheline syenites of the sinapalli nappe, occurring along. Eastern ghats province indiarayner complex antarctica. Limestone, bauxite and iron ore are found in the eastern ghats hill ranges. The eastern ghats granulite belt of india has traditionally been described as a proterozoic mobile belt, with probable archaean protoliths. Introduction the eastern ghats belt along the east coast of india figure 1. Evolution of eastern ghats granulite belt of india in a compressional.
Sep 15, 2018 there has been a longstanding and scientifically contentious issue, concerning whether or not the eastern ghats mobile belt egmb extends southward beyond ongole in the state of andhra pradesh, in south india. Structural, geochronological and tectonic evolution of the central. Dc e dharwar craton, bc e bastar craton, mr e mahanadi rift, gr e godavari rift, cgb e chhattisgarh basin, and cb e cuddapah basin. This page was last edited on 29 august 2015, at 11. The eastern ghats mobile belt egmb and the adjacent archaean singhbhum and bastar craton contact collisional sutures zones in southeastern india are investigated for seismic anisotropic signatures. This mineral chemical electron micro probe analytical data have been correlated with published garnet chemistry from various litho units of the eastern ghats granulite belt to understand provenance.
Timing and dynamics of the juxtaposition of the eastern. What is the difference between western ghat and eastern ghat. A northplunging lowamplitude asymmetrical synclinorium having a gently dipping western limb bason intensely folded, overfolded and thrusted eastern limb is the major basni element. Evidence collated from different parts of the eastern ghats belt north of the godavari rift barring the western charnockite zone indicates that this sector evolved through a series of compressive structures f1 to f3, with prolific migmatization in quartzofeldspathic and metapelitic gneisses synchronous with f1 shortening, as was the synf1 emplacement of profuse megacrystic k. The eastern ghats run from west bengal state in the north, through orissa and andhra pradesh to tamil nadu in the south. Examination of landsat tm images, reconnaissance field traverses and the published geological maps from the eastern ghats mobile belt egmb, india, reveal a network of major ductile shear zones. Belt belts are looped over pulleys belt drive when a belt is used for power transmission it is called a belt drive. First shear wave splitting measurements from unexplored region of eastern ghats mobile belt and surrounding cratons. Reaction textures and metamorphic evolution of sapphirinespinelbearing and associated granulites from diguva sonaba, eastern ghats mobile belt, india volume 152 issue 2 divya prakash, deepak, praveen chandra singh, chandra kant singh, suparna tewari, makoto arima, hartwig e. The eastern ghats mobile belt of india displays foldthrust belt structure with a prominent salient on its nw margin. Mantle deformation patterns and signatures of rift, beneath. Read a crustal section of eastern dharwar cratongodavari rift eastern ghats mobile belt, india, gondwana research on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The arcuate eastern margin is marked by a prominent boundary thrust, which is parallel to the nellore schist belt, eastern ghats mobile belt and the east coast.
The thrust, known as the terrane boundary shear zone, is associated with two large lateral ramps resulting in a curved outline on the northwestern corner of the mobile belt. Semantic scholar extracted view of zonation of the eastern ghats mobile belt. One example is the alignment of the sri lanka eastern ghats mobile belt of india, east antarctica, and the albany fraser province of southwest australia slegeaaf belt. Western ghats and eastern ghats physical features of india. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. The northwestern part of the eastern ghats mobile belt comprises a fold. Foldthrust belt geometry of the eastern ghats mobile belt, a. Jul 01, 2001 read the eastern ghats mobile belt, india. Evidences of fold superimposition from anakapalle, eastern. The eastern ghats a discontinuous range of mountains along the eastern coast of india. A structural and zircon upb shrimp study of the foldthrust belt and. Ahujatiming and dynamics of the juxtaposition of the eastern ghats mobile belt against the bhandara craton, india. Sri lankaindian eastern ghatseast antarctica and the. Pdf mantle deformation patterns and signatures of rift.
Therefore, this mobile belt played an important role in the construction of gondwanaland. Examination of landsat tm images, reconnaissance field traverses and the published geological maps from the eastern ghats mobile belt egmb, india, reveal a network of major ductile shear zones both within and at the margins. Apart from reconnaissance survey by individual geologists c. There are approximately 50 localities of such rocks, generally restricted to the eastern ghats mobile belt. Some structural observations in the eastern ghats mobile. Eastern ghats belt, grenvillianage tectonics and the. They are eroded and cut through by the four major rivers of southern india, the godavari, mahanadi, krishna, and kaveri. Eastern ghats mobile belt request pdf researchgate. The volume looks at the ethnic diversity, ethnobotany, ethnomedicine, ethnoveterinary medicine, and ethnic food of the region. By continuing to browse this site you agree to us using cookies as described in. In the reassembly of precambrian gondwanaland, many now dispersed precambrian mobile belts appear to be aligned, and this geometrical relationship may be significant.
Pdf deep crustal shear zones in the eastern ghats mobile. They proposed insim biotite dehydration to form orthopyroxene in the presence of a fluid phase with locally different activity of co2 for the metamorphic charnockite and crystallization from calcalkaline magmas derived by partial. Massiftype charnockites in the eastern ghats granulite belt, india, of archean and proterozoic ages mirror the changing conditions andor processes of continental crust for mation. Choose from 500 different sets of eastern and western ghats flashcards on quizlet. The proterozoic eastern ghats mobile belt along the east coast of india shares a thrusted lower contact with the surrounding cratons. The maliya range is located in the northern portion of the eastern ghats. A suite of quartz and corundumbearing metapelitic granulites, intruded by layered gabbronoritepyroxeniteanorthosite at kondapalle, eastern ghats belt, preserves a multitude of reaction textures involving oxide and silicate minerals that attest to several prograde and retrograde reactions. The cuddapah basin in andhra pradesh is a remarkable tectonic and orogenic belt of the unfossiliferous precambrian rocks of peninsular india.
Shear zones are significant in understanding the physicochemical processes, such as mineralization, magmatism, metamorphism, and deformational patterns and bear remarkable influence on many aspects of earth system science. Proceedings of workshop on eastern ghats mobile belt istarna gha. Pdf timing and dynamics of the juxtaposition of the. Delhi, the central india tectonic zone, the singhbhum, the eastern ghats and the southern granulite terrane. Eastern ghats and adjacent deccan, the first of a fivevolume set, provides an informative overview of humanplant interrelationships in this southern area of india. The eastern ghat mobile belt egmb also shows signatures of ew directed. Three major episodes of folding are evident in the eastern ghats terrain. The maliya range generally ranges between elevations of 9001200 m, although some of. Eastern ghats belt of india played a pivotal role in the continental amalgamation process and it evolved in tandem with the central indian tectonic zone and the aravalli delhi mobile belt. The eastern ghats mobile belt is an arcuate belt of the highgrade terrain located along the east coast of peninsular india. The eastern ghats mobile belt egmb derives its name from the mountain of eastern ghats in the east coast of india. Foldthrustbelt structure of the proterozoic eastern ghats mobile. Easily share your publications and get them in front of issuus. The philippine mobile belt is bounded on the west by the manila trench and its associates the negros trench and the cotabato trench, which subducts the sunda plate under the philippine mobile belt.
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