Tectonothermal events in Central Indian Tectonic Zone (CITZ) and its implications in Rodinian crustal assembly

Roy, Abhinaba; Prasad, M. Hanuma

doi:10.1016/s1367-9120(02)00180-3

Cited by 183 publications

(130 citation statements)

References 17 publications

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“…The CITZ lies between Son-Narmada North Fault (SNNF) in north and Central Indian Shear (CIS) in the south (Fig 1) [2,3,4]. Three major Proterozoic supracrustal belts, Mahakoshal, Betul and Sausar occur from north to south in the CITZ.…”

Section: Introductionmentioning

confidence: 99%

“…Three major Proterozoic supracrustal belts, Mahakoshal, Betul and Sausar occur from north to south in the CITZ. The Mahakoshal belt representing the back arc/continental rift exposes a greenstonetype volcano-sedimentary association fringed by high grade anorthositic rocks (Makrohar granulites) near the southern margin [4]. The Betul and Sausar belts are located in the west-central and southern part of the CITZ, representing active continental margin and suture zone, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…2.7 to ca. 0.9 Ga [4,5]. Major regional scale faults and ductile shear zones delineating the CITZ are indications of significant crustal scale tectonism.…”

Section: Introductionmentioning

confidence: 99%

“…Major regional scale faults and ductile shear zones delineating the CITZ are indications of significant crustal scale tectonism. These tectonic activities resulted in rifting, volcanism, polyphase deformation, metamorphism, and magmatism in the CITZ during the suturing of the northern and southern cratonic assemblies [1,4].…”

Section: Introductionmentioning

confidence: 99%

“…The integrated field, petrographic, geochemical data on magmatic rocks can be used as good geodynamic indicators [4,6,7,8]. The trace and REE data are now extensively used to evaluate the various processes of magma generation and their source characteristics [9,10].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Petrography and Geochemistry of Padhar Mafic-Ultramafic Suite Rocks, Betul Belt, Central Indian Tectonic Zone, India: Plausible Arc type Magmatism

Dhillon¹,

Balaram²,

Kishore³

et al. 2017

IOSR JAGG

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…2.7 to ca. 0.9 Ga [4,5]. Major regional scale faults and ductile shear zones delineating the CITZ are indications of significant crustal scale tectonism.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Petrography and Geochemistry of Padhar Mafic-Ultramafic Suite Rocks, Betul Belt, Central Indian Tectonic Zone, India: Plausible Arc type Magmatism

Dhillon¹,

Balaram²,

Kishore³

et al. 2017

IOSR JAGG

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Paleoproterozoic/Mesoproterozoic tectonism in the northern fringe of the Western Dharwar Craton (India): Its relevance to Gondwanaland and Columbia supercontinent reconstructions

Rekha

Bhattacharya

2014

Tectonics

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Early Precambrian mafic dyke swarms from the Central Archaean Bastar Craton, India: geochemistry, petrogenesis and tectonic implications

Srivastava

Gautam

2011

Geological Journal

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The Archaean Bastar craton is known for the presence of different generations of mafic dykes. Less studied many NW-SE trending mafic dykes (intruded into the Archaean supracrustal rocks), encountered from the central part of the Bastar craton, are studied for their petrological and geochemical characteristics. There are many geological evidences which suggest emplacement of these mafic dykes in an intracratonic setting. Two distinct types of mafic dykes are recognized. Petrographically it is difficult to discriminate these two types. Many samples show metamorphic textures and amphibolites facies mineral assemblage but a few samples preserved original igneous texture and mineralogy. Major oxides show sub-alkaline thoeliitic basalt/basaltic andesite nature. High-Fe and high-Mg contents classify them as high-iron and highmagnesium tholeiites. They fall in the gabbronorite field on R1-R2 plot. Geochemical characteristics, particularly high-field strength and rareearth elements, clearly distinguished them into two types: Group 1 and Group 2 mafic dykes. When compared with well-studied mafic dyke swarms of the Southern Bastar craton, the Group 1 is recognized as Meso-Neoarchaean sub-alkaline mafic dykes (BD1-CBC) and the Group 2 as Neoarchaean-Palaeoproterozoic boninite-norite mafic dykes (BN-CBC). The boninite-norite nature of the second group is also corroborated through immobile trace element ratios. BD1-CBC dykes are characterized by a relatively higher concentration of HFSE and REE in comparison to BN-CBC dykes. Some extent of crustal contamination is observed in BN-CBC dykes but BD1-CBC dykes do not show any indication of crustal contamination. Trace element modelling suggest that BD1-CBC mafic dykes are derived from a melt originated through $20% melting of a depleted mantle source, whereas BN-CBC mafic dykes are probably derived from a high-Mg magma generated through $25% melting of a refractory mantle source. Both melts have undergone 30-40% olivine fractionation before the emplacement. Geochemistry also points out involvement of a plume in the genesis of these mafic dykes.

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Tectonothermal events in Central Indian Tectonic Zone (CITZ) and its implications in Rodinian crustal assembly

Cited by 183 publications

References 17 publications

Petrography and Geochemistry of Padhar Mafic-Ultramafic Suite Rocks, Betul Belt, Central Indian Tectonic Zone, India: Plausible Arc type Magmatism

Petrography and Geochemistry of Padhar Mafic-Ultramafic Suite Rocks, Betul Belt, Central Indian Tectonic Zone, India: Plausible Arc type Magmatism

Paleoproterozoic/Mesoproterozoic tectonism in the northern fringe of the Western Dharwar Craton (India): Its relevance to Gondwanaland and Columbia supercontinent reconstructions

Early Precambrian mafic dyke swarms from the Central Archaean Bastar Craton, India: geochemistry, petrogenesis and tectonic implications

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