Unravelling the record of Archaean crustal evolution of the Bundelkhand Craton, northern India using U–Pb zircon–monazite ages, Lu–Hf isotope systematics, and whole-rock geochemistry of granitoids

Kaur, Parampreet; Zeh, Armin; Chaudhri, Naveen; Eliyas, Nusrat

doi:10.1016/j.precamres.2016.06.005

Cited by 121 publications

(110 citation statements)

References 143 publications

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“…Our reconnaissance over the craton further suggests that both grey and red granitoids commonly occur side by side, with the grey ones grading into the red ones through a few mm to metre‐scale transition zone (Figure a,b). Kaur et al () also reported presence of enclaves of light to dark grey granitoid within red granitoid (monzogranite to granodiorite) in the craton.…”

Section: Field Aspects Of Grey and Red Granitoidsmentioning

confidence: 93%

“…3560–3200 Ma (Kaur, Zeh, & Chaudhri, ; Mondal et al, , Saha et al, ; Sarkar et al, ), with three distinct phases of Tonalite‐Trondhjemite‐Granodiorite formation at 3.55, 3.44, 3.30, and possibly another phase at ca. 2.67 Ga (see Kaur et al, ). Xenocrystic zircons, dated at ~3.59 Ga, possibly represent a still older felsic crust in the region (Saha et al, ).…”

Section: Geological Settingmentioning

confidence: 99%

“…2.5 Ga (Mondal, Goswami, Deomurari, & Sharma, ; Verma, Verma, Oliveria, Singh, & Moreno, ). Very recently, based on U–Pb single zircon method and Hf‐isotopic study, an intrusion age for granitoids of 2.58–2.50 Ga is suggested by Kaur et al (). Interestingly, one sample of granitoid yielded a still younger crystallization age at about 2358 ± 46 Ma (see in Kaur et al, ) thus further extending the possible duration of granitoid crystallization substantially.…”

Section: Geological Settingmentioning

confidence: 99%

“…The Bundelkhand craton was affected by metamorphic events at ~3.2 Ga (Kaur et al, ) and 2.78 Ga (Saha et al, ). A Pan‐African tectonothermal overprint at 0.5–0.6 Ga is also identified by Kaur et al (). The granitoids are conspicuously affected by brittle shear fractures and ductile shear zones.…”

Section: Geological Settingmentioning

confidence: 99%

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Reddening of ~2.5 Ga granitoid by high‐temperature fluid linked to mafic dyke swarm in the Bundelkhand Craton, north central India

et al. 2017

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The origin of reddening of granitoid is controversial. Red granitoids, occurring spatially with grey granitoids with a thin transitional zone is a volumetrically significant litho‐type in the Bundelkhand Craton, north central India. Using detailed petrography and microstructure study, and phase compositions and elemental X‐ray maps, we demonstrate for the first time that pervasive infiltration of Fe‐Mg‐Na‐K‐rich fluid caused re‐equilibration of ~2.5 Ga grey monzogranite during both brittle and ductile deformation in the craton. The reddening of granitoid is attributed to replacement and precipitation of tiny Fe‐rich particles in porous feldspars by the high temperature Fe‐Mg‐Na‐K‐rich fluid (~950°C), plausibly from crust–mantle depths. The Fe‐Mg‐Na‐K‐rich fluid with high to moderately high FeO (≤27 wt%), MgO (≤19 wt%), Al2O3 (≤20 wt%), Na2O (<1.59 wt%), K2O (<2.74 wt%), low CaO, (≤0.28 wt%), and FeO/MgO (<1) occurs as discrete interconnected network of green colour veins in the rock. We infer that the veins filled with green‐coloured material along deep shear planes/mylonitic fabric in granitoids and grain boundaries and fractures of felsic minerals (feldspar and quartz) acted as highly permeable network conducive for pervasive fluid activity in the area that influence the normative mineralogy of granitoids yielding pyroxene in the norm. Replacement of original K‐feldspar by plagioclase (albitization), and again by K‐feldspar (K‐feldspathization) by deep fluid took place during which Al2O3 was broadly conserved, with no significant gain or loss in alkalies, a marginal loss in CaO and, but a huge gain in FeO and MgO. The Fe‐Mg‐Na‐K‐rich fluid (with normative olivine + pyroxene) is responsible for near isochemical subsolidus alteration and replacement–precipitation process of feldspars in granitoids. We suggest that the Fe‐Mg‐Na‐K‐rich fluid is of crust–mantle derivation and could intrinsically be linked to Paleoproterozoic dolerite dyke swarm activity in the craton.

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Section: Field Aspects Of Grey and Red Granitoidsmentioning

confidence: 93%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 2 more Smart Citations

Reddening of ~2.5 Ga granitoid by high‐temperature fluid linked to mafic dyke swarm in the Bundelkhand Craton, north central India

et al. 2017

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“…All of those rock units are intruded by N‐E trending quartz reefs followed by N‐W trending dolerite dike swarms in a large part of the craton [ Basu , ; Sharma , ; Mondal et al ., ; Singh et al ., ; Basu , ; Bhattacharya and Singh , , and references there in]. Detailed work on geochronology in the Bundelkhand massif has been carried out by several workers [ Sarkar et al ., ; Mondal et al ., , ; Rao et al ., ; Kaur et al ., ]. The available data suggest that the oldest event of granitic magmatism in the region took place around 3500 Ma by the tonalite‐trondhjemite‐granodiorite (TTG) gneisses [ Kaur et al ., ] and the emplacement of Bundelkhand granitoids took place in quick succession at the end of the Neo‐Archaean, i.e., ~2.5 Ga [ Mondal et al ., ].…”

Section: Geological Settingmentioning

confidence: 99%

Heat flow, heat production, and crustal temperatures in the Archaean Bundelkhand craton, north‐central India: Implications for thermal regime beneath the Indian shield

et al. 2017

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Heat flow and heat production data sets constrain the crustal thermal structure in the 2.5–3.5 Ga Bundelkhand craton, the oldest cratonic core in northern Indian shield, for the first time and allow comparisons with the southern Indian shield. Temperature measurements carried out in 10 boreholes at five sites in the craton, combined with systematic thermal conductivity measurements on major rock types, yield low heat flow in the range of 32–41 mW m−2, which is distinct from the generally high heat flow reported from other parts of the northern Indian shield. Radioelemental measurements on 243 samples of drill cores and outcrops reveal both large variability and high average heat production for the Neo‐Archaean to Palaeo‐Proterozoic granites (4.0 ± 2.1 (SD) μW m−3) relative to the Meso‐Archaean tonalite‐trondhjemite‐granodiorite (TTG) gneisses (2.0 ± 1.0 (SD) μW m−3). On the basis of new heat flow and heat production data sets combined with available geological and geophysical information, a set of steady state, heat flow‐crustal heat production models representative of varying crustal scenarios in the craton are envisaged. Mantle heat flow and Moho temperatures are found to be in the range of 12–22 mW m−2 and 290–420°C, respectively, not much different from those reported for the similar age Dharwar craton in southern India. This study reveals similar mantle thermal regimes across the northern and southern parts of the Indian shield, in spite of varying surface heat flow regimes, implying that much of the intraprovince and interprovince variations in the Indian shield are explained by variations in upper crustal heat production.

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Characteristic landforms and geomorphic features associated with impact structures: Observations at the Dhala structure, north‐central India

Singh

Pati

Sinha

et al. 2021

Earth Surf Processes Landf

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Geomorphological study of some of the just more than 200 known terrestrial impact structures has demonstrated that despite extensive degradation, important geomorphological keys, such as drainage pattern, topographic signatures, erosional landforms, and depositional features, can still be assessed. They can provide possible indicators to assist in the recognition of further impact structures, especially on Precambrian shields and cratonic landmasses. This study documents the surface features and landforms of the Paleoproterozoic, about 11 km diameter Dhala impact structure in India. The Dhala structure has an estimated age that is constrained stratigraphically between 1.7 and 2.5 Ga. This structure is deeply eroded, and barely has a morphological resemblance to other known terrestrial or extraterrestrial impact structures.We have analyzed the operative surface-forming processes for the Dhala area.We demand to continue the in-depth study of all terrestrial impact structures, especially the pre-Paleozoic ones, so that geomorphological criteria can be rigorously constrained and applied in conjunction with a priori remote sensing and field data to support the identification of new structures prior to their ultimate confirmation using diagnostic evidence of shock metamorphism.

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Unravelling the record of Archaean crustal evolution of the Bundelkhand Craton, northern India using U–Pb zircon–monazite ages, Lu–Hf isotope systematics, and whole-rock geochemistry of granitoids

Cited by 121 publications

References 143 publications

Reddening of ~2.5 Ga granitoid by high‐temperature fluid linked to mafic dyke swarm in the Bundelkhand Craton, north central India

Reddening of ~2.5 Ga granitoid by high‐temperature fluid linked to mafic dyke swarm in the Bundelkhand Craton, north central India

Heat flow, heat production, and crustal temperatures in the Archaean Bundelkhand craton, north‐central India: Implications for thermal regime beneath the Indian shield

Characteristic landforms and geomorphic features associated with impact structures: Observations at the Dhala structure, north‐central India

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