Geochemistry, U-Pb geochronology and Lu-Hf isotope systematics of a suite of ferroan (A-type) granitoids from the CGGC: Evidence for Mesoproterozoic crustal extension in the east Indian shield

Mukherjee, S.; Dey, Anindita; Ibáñez-Mejía, Mauricio; Sanyal, Shankha; Sengupta, P.

doi:10.1016/j.precamres.2017.11.018

Cited by 41 publications

(38 citation statements)

References 144 publications

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“…(c) The timing of metamorphism of the Sausar sediments between 1.06 and 0.93 Ga (Bhowmik et al, ; Stein et al, ; Chattopadhyay et al, ) also implies that the depositional age of the Sausar sediments can be best bracketed between 1.53 and 1.54 and 1.06 Ga or alternatively between 1.42 (timing of exhumation of granulites?) and 1.06 Ga. Based on the analysis presented above and drawing analogy with c. 1.45‐Ga extension tectonics in the adjoining Chhotanagpur Gneissic Complex (Mukherjee, Dey, Ibanez‐Mejia, et al, ), it has been argued here that opening up of the Sausar Basin is linked with a phase of Middle Proterozoic crustal extension as part of disintegration of the proto‐Greater Indian Landmass . The Sausar basal conglomerate‐sandstone unit near Balaghat area offers an excellent opportunity to undertake detrital zircon geochronology study to further test the validity of this interpretation.…”

Section: Disintegration Of Proto‐greater India Landmass and Mesoprotementioning

confidence: 73%

“…However, the geological significance of these ages—either marking the timing of the BM 5 greenschist to lower amphibolite facies overprint or a late fluid‐mediated metamorphic recrystallization event—is not well understood at this stage. In a regional context, a pervasive high‐temperature, ferroan, A‐type granitoid magmatism has been dated at c. 1.45 Ga in the adjoining Chhotanagpur Gneissic Complex (Mukherjee, Dey, Ibanez‐Mejia, et al, ). The event has been interpreted to mark a phase of lithospheric extension, leading to the disintegration of the Columbia (Mukherjee, Dey, Ibanez‐Mejia, et al, ).…”

Section: Bhandara‐balaghat Granulite Domainmentioning

confidence: 99%

“…In a regional context, a pervasive high‐temperature, ferroan, A‐type granitoid magmatism has been dated at c. 1.45 Ga in the adjoining Chhotanagpur Gneissic Complex (Mukherjee, Dey, Ibanez‐Mejia, et al, ). The event has been interpreted to mark a phase of lithospheric extension, leading to the disintegration of the Columbia (Mukherjee, Dey, Ibanez‐Mejia, et al, ). Seen in that perspective, the 1.47–1.42 Ga monazite ages in the BBG belt can be tentatively correlated with a crustal extension event that led to the final exhumation of the BBG granulites, nearly 100 Myrs after the cratonization event.…”

Section: Bhandara‐balaghat Granulite Domainmentioning

confidence: 99%

“…See text for further details. Data sources are as follows: SMB: Ahmad et al, ; Bhowmik, ; Bhandari et al, ; Bhowmik et al, , , , ; Chattopadhyay et al, , ; Bhowmik & Chakraborty, ; MB: Bora et al, ; Deshmukh, Prabhakar, Bhattacharya, & Madhavan, ; Khanna et al, ; Saikia et al, ; CGC: Chatterjee et al, ; Maji et al, ; Rekha et al, ; Chatterjee & Ghose, ; Karmakar et al, ; Sanyal & Sengupta, ; Dey et al, ; Mukherjee et al, ; Mukherjee, Dey, Ibanez‐Mejia, et al, ; Mukherjee, Dey, Sanyal, & Sengupta, ; NSMB: Roy, Sarkar, Jeyakumar, Aggrawal, & Ebihara, ; Mahato, Goon, Bhattacharya, Mishra, & Bernhardt, ; Reddy, Clark, & Mazumder, ; GSB: Chakraborty et al, ; Vindhyan basin: Ray, Martin, Veizer, & Bowring, ; Rasmussen et al, ; Bickford et al, [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Late Palaeoproterozoic To Early Mesoproterozoic Orogenesis Imentioning

confidence: 99%

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The current status of orogenesis in the Central Indian Tectonic Zone: A view from its Southern Margin

Bhowmik

2019

Geological Journal

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The Central Indian Tectonic Zone, because of its critical position in the tectonic framework of East Gondwanaland, holds insights into our understanding of the assembly and dispersal of Columbia and Rodinia supercontinents through the growth of the Greater Indian Landmass. The tectonic zone, which is now a collage of different supracrustal and granulite‐gneiss belts, bears testimony to a multistage orogenic evolution from Late Palaeoproterozoic to Early Neoproterozoic time. In this contribution, the current status of orogenic evolution in the Central Indian Tectonic Zone has been reviewed using petrological and geochronological constraints from the Sausar Mobile Belt, its southernmost constituent. It reveals a three‐stage evolution leading to the growth of the Greater Indian Landmass: (a) c. 1.6–1.5‐Ga accretionary orogenesis produced the first nucleus of Greater India through the assembly of arc, back arc, and continental margins; (b) a phase of Middle Proterzoic extension led to the disintegration of the Proto‐Greater India; and (c) classical Himalayan‐style continental collision between 1.06 and 0.93 Ga finally stitched the North and South India blocks to produce the final configuration of the Greater Indian Landmass. It is argued that the Late Palaeoproterozoic to Early Mesoproterozoic orogenesis in India and former Gondwanaland and Laurentian fragments is a globally significant amalgamation event separate from the Columbia Supercontinent assembly.

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Section: Disintegration Of Proto‐greater India Landmass and Mesoprotementioning

confidence: 73%

Section: Bhandara‐balaghat Granulite Domainmentioning

confidence: 99%

Section: Bhandara‐balaghat Granulite Domainmentioning

confidence: 99%

Section: Late Palaeoproterozoic To Early Mesoproterozoic Orogenesis Imentioning

confidence: 99%

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The current status of orogenesis in the Central Indian Tectonic Zone: A view from its Southern Margin

Bhowmik

2019

Geological Journal

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“…However, several lines of observations reported by the existing studies raise the possibility that the CGGC experienced one or more phases of high‐grade metamorphism prior to ~1550 Ma. These are (a) the occurrences of older metasedimentary granulites as enclaves within the felsic orthogneiss that crystallized at ~1450 Ma (Mukherjee et al, ; Mukherjee, Dey, Ibanez‐Mejia, Sanyal, & Sengupta, ); (b) the intrusion of ~1550 Ma‐old anorthosites into an older metasedimentary granulitic crust (Chatterjee, Crowley, & Ghose, ); and (c) the presence of ultra‐high‐temperature/UHT metamorphic assemblages within few of the metasedimentary enclaves (reported by Sanyal & Sengupta, ).…”

Section: Introductionmentioning

confidence: 99%

Petrology and geochronology of a suite of pelitic granulites from parts of the Chotanagpur Granite Gneiss Complex, eastern India: Evidence for Stenian‐Tonian reworking of a late Paleoproterozoic crust

et al. 2019

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The north‐eastern part of the Chotanagpur Granite Gneiss Complex (CGGC) in the East Indian shield contains enclaves of migmatitic pelitic granulites (PG) within felsic orthogneiss (FOG). Field observations, petrology and geochronology (LA–MC–ICP–MS U–Pb dating of zircon and EPMA Th–U–total‐Pb dating of monazite) of the PG suggest two distinct metamorphic events. The earliest event M1, which is characterized by high‐temperature (>850°C) granulite facies metamorphism, occurred in the timespan of ~1680–1580 Ma. Extensive dehydration melting of biotite + sillimanite + quartz‐rich protoliths led to stabilization of the restitic assemblage (garnet + alkali‐feldspar + quartz + sillimanite + ferrian‐ilmenite) together with large volumes of felsic melts (leucosomes). Collisional tectonics followed by delamination and asthenospheric upwelling could have triggered the M1 event. Subsequently, at ~1470–1400 Ma, the igneous protolith of the host FOG intruded and hydrated the PG. Thereafter, a second metamorphic event, M2, accompanied by compressional structures, affected both the rock types. A clockwise P–T path that culminated at ≥10 kbar ~760–850°C and is followed by a steeply decompressive retrograde path characterizes this event. The P–T path and the inferred geothermal gradient (<27°C/km) are compatible with a continent–continent collisional setting. Geochronological findings suggest a protracted orogeny for the M2 event with its major pulse during ~970–950 Ma. When combined with the published information, this study supports the view that a large (if not the entire) portion of the Indian shield and the granulite terranes of east Antarctica share similar tectonothermal events that led to the formation of two supercontinents, Columbia and Rodinia.

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Metamorphic evolution of the pelitic and mafic granulites from Daltonganj, Chhotanagpur Granite Gneiss Complex, India: Constraints from zircon U–Pb age and phase equilibria modelling

et al. 2021

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The Daltonganj region is located on the northwestern extension of the Chhotanagpur Granite Gneiss Complex in the eastern Indian Peninsula, which is characterized by pelitic and mafic assemblages of granulite facies rock. The pelitic granulites contain garnet, cordierite, biotite, plagioclase, K‐feldspar, sillimanite, and quartz. Petrographical interpretations divulge prograde and retrograde metamorphic events within mafic granulites, which consist of clinopyroxene, orthopyroxene, amphibole, plagioclase, biotite, and quartz. Field observation, petrography, phase equilibrium modelling, and U–Pb zircon geochronology of the pelitic granulites reveal two stages of metamorphic events along the clockwise P–T path. Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICP‐MS) zircon U–Pb age dating of pelitic granulites shows the detrital zircon ages from ~1,734 Ma to 1,677 Ma, and the possible metamorphic domains show the weighted mean age of 1,638 ± 22 Ma, which represents the timing of metamorphism. Subsequently, the magmatic emplacement of mafic granulites was recorded at 1,629 ± 6 Ma age by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICP‐MS) zircon U–Pb dating which coincide with the timing of metamorphism of the pelitic granulite. Phase equilibrium modelling in the NCKFMASHTO system divulges the pre‐peak metamorphic stage at ~3.2 kbar and ~620°C and the first stage which is characterized by a peak metamorphic condition that ranges from 7.40 to 9.10 kbar and from 815 to 835°C during ~1,638 Ma with the mineral assemblage of garnet + sillimanite + biotite + plagioclase + K‐feldspar + melt + quartz + ilmenite. Sequentially, the retrograde metamorphism is observed by a nearly isothermal decompression stage at ~4.0 kbar/~790°C after 1,638 Ma, due to the appearance of garnet + cordierite + biotite + plagioclase + K‐feldspar + melt + quartz + ilmenite + magnetite. The formation of cordierite is due to the decompression and dehydration melting phases. The Nb, Sr, and Ti negative anomalies suggest their generation from crustal sources. The geochemical analyses constrain that the sedimentation of pelitic sediments was recorded along the convergent margin and encountered by a subduction‐related tectonic setting. The geochemical interpretation provides significant evidence that the protoliths of pelitic granulites were derived from the Singhbhum Mobile Belt, Mahakoshal Supracrustal Belt, and Bundelkhand Craton, while their metamorphism was processed by the continent–continent collision and followed by exhumation.

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Geochemistry, U-Pb geochronology and Lu-Hf isotope systematics of a suite of ferroan (A-type) granitoids from the CGGC: Evidence for Mesoproterozoic crustal extension in the east Indian shield

Cited by 41 publications

References 144 publications

The current status of orogenesis in the Central Indian Tectonic Zone: A view from its Southern Margin

The current status of orogenesis in the Central Indian Tectonic Zone: A view from its Southern Margin

Petrology and geochronology of a suite of pelitic granulites from parts of the Chotanagpur Granite Gneiss Complex, eastern India: Evidence for Stenian‐Tonian reworking of a late Paleoproterozoic crust

Metamorphic evolution of the pelitic and mafic granulites from Daltonganj, Chhotanagpur Granite Gneiss Complex, India: Constraints from zircon U–Pb age and phase equilibria modelling

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