Pressure–temperature-deformation history for a part of the Mesoproterozoic fold belt in North Singhbhum, Eastern India

Ghosh, Manua; Mukhopadhyay, D.; Sengupta, P.

doi:10.1016/j.jseaes.2004.11.007

Cited by 12 publications

(22 citation statements)

References 39 publications

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“…An Early Mesoproterozoic age was also recorded from the bounding SSZ at the southern margin of the NSMB, based on U-Pb uraninite dating (Rao et al, 1979). Ghosh et al (2006) additionally documented a low-P, intermediate T, andalusite facies metamorphism, predating the kyanite facies regional metamorphism.…”

Section: Discussionmentioning

confidence: 88%

“…The intermediate slope of the MFG in P-T space, on the other hand, is consistent with burial of a relatively hot crust. That the Early Mesoproterozoic compression involved attenuated, thermally perturbed crust also finds support from the record of an early andalusite facies thermal metamorphism, which was coincident with voluminous mafic magmatism in the belt (the Dalma Igneous suite; Ghosh et al, 2006). Such voluminous mafic magmatism is generally linked to lithospheric extension, caused by mantle-scale thermal perturbation.…”

Section: Discussionmentioning

confidence: 89%

“…Intermediate pressure greenschist facies metamorphic conditions (P$4.4-5.3 kbar, T$450-5808C, Sini area, Lal et al, 1987;P$6.4 kbar, T$4808C, Surda, Sengupta et al, 2005; P$5.5 kbar, T$5508C, Dhalbhumgarh, Ghosh et al, 2006) are uniformly recorded all along the southern part of the belt, whereas high-P amphibolite facies (P$10 kbar; T$6258C) metamorphism has been established from the central sector . For both these sectors, a clockwise metamorphic P-T path has been proposed (Ghosh et al, 2006;Mahato et al, 2008). Mahato et al (2008) recently assigned an Early Mesoproterozoic age ($1.5 Ga) for this high-P metamorphism, based on detailed EMP dating of monazites.…”

Section: Discussionmentioning

confidence: 99%

“…The majority of these models envisage an early N-S extension, leading to the opening of a volcano-sedimentary basin (cf. NSMB) either in ensialic (Gupta et al, 1980;Mukhopadhyay, 1984;Sarkar et al, 1992;Ghosh et al, 2006;Acharyya et al, 2006), or marginal basin (Bose and Chakrabarty, 1981;Bose et al, 1989) settings, and succeeded by compressional deformation, causing basin inversion following either intraplate subduction (Sarkar and Saha, 1977), microcontinental subduction (Sarkar, 1982) or collision (Ghosh et al, 2006;Mahato et al, 2008). Available geochronological data, however, do not support an intracontinental rift related setting for the evolution of the NSMB, as Archaean ancestry of the CGC, which is required for a uniform cratonic basement across the NSMB, has not been established.…”

Section: Discussionmentioning

confidence: 99%

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∼1.6 Ga ultrahigh‐temperature granulite metamorphism in the Central Indian Tectonic Zone: insights from metamorphic reaction history, geothermobarometry and monazite chemical ages

et al. 2011

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In this study, we present precise pressure-temperature (P-T) and age constraints of ultrahigh-temperature (UHT) metamorphism of the Bhandara-Balaghat granulite (BBG) domain at the southern margin of the Central Indian Tectonic Zone (CITZ). Supracrustal and metaigneous granulites of this domain, which lie as detached pods and lenses of various sizes within felsic gneiss-migmatite association record protracted high-T crustal anatexis events, broadly synchronous with and/or punctuated with felsic and mafic plutonism. Magnesian metagreywacke protolith of the supracrustal suite records extensive biotite melting and subsequent melt extractions at deep crustal, UHT metamorphic conditions (T ! $9008C at P$8 kbar), producing restitic mineral assemblages of garnet þ rutile, garnet þ cordierite and garnet þ aluminous orthopyroxene. The diversity of the mineral assemblages is related to the domainal-scale variation of the bulk rock composition. In situ chemical age dating of five monazite grains, which occur in the different textural settings of the garnet þ cordierite þ orthopyroxene þ rutile-bearing granulite reveals two age domains: (1) Pervasive $1.6 Ga domain, which is recorded in monazites occurring as inclusions in garnet and in the leucosome matrix is correlated with the timing of the UHT metamorphism. (2) $1.47 Ga domain reflects a fluid-mediated recrystallization event leading to dissolution and re-precipitation of older monazite. The $1.6 Ga monazite chemical ages provide robust constraints on the timing of the earliest stage of tectonothermal processes in the CITZ (defined here as the 'Central Indian Orogeny'). The significance of the $1.6 Ga hot orogenesis in interorogen correlation is discussed.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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∼1.6 Ga ultrahigh‐temperature granulite metamorphism in the Central Indian Tectonic Zone: insights from metamorphic reaction history, geothermobarometry and monazite chemical ages

et al. 2011

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“…The Chaibasa Formation is built of repeated alternations of quartzites (metamorphosed sandstones), heterolithic units (very fine sandstone/shale intercalations) and mica schists (metamorphosed shales) (Bhattacharya, 1991;Bose et al, 1997;Mazumder, 2005). The rocks are metamorphosed to lower greenschist to amphibolite facies (Naha, 1965;Saha, 1994;Ghosh et al, 2006).…”

Section: Geological Settingmentioning

confidence: 99%

Geochemical and Sm–Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India: Implications for provenance, and contemporary basin tectonics

Mazumder

Ohta

et al. 2015

Precambrian Research

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a b s t r a c tIn significant contrast to other cratonic blocks of India, the Singhbhum cratonic successions record continuous depositional record from the Palaeoarchaean to Mesoproterozoic. Although the sedimentary facies characteristics and mode of stratigraphic sequence building of the Dhanjori and Chaibasa Formations are well known, sedimentary geochemistry, provenance and tectonic milieu of deposition of these two formations are hitherto unknown. The current manuscript presents geochemical and Sm-Nd isotopic data from the Dhanjori and Chaibasa Formations for the first time and combine previous sedimentological data with the goal to expand the framework for understanding the depositional and tectonic setting of these two formations. The Sm-Nd isotopic data for the Chaibasa clastics is unambiguous with respect to provenance. Average ε Nd (t = 2.2 Ga) = −0.8 ± 1.0 and average Nd model age (TDM) = 2.51 ± 0.08 Ga with average 147 Sm/ 144 Nd ratios = 0.1114 ± 0.0041 for phyllites and quartzites indicate an extremely homogeneous source signature consistent with a late Archaean "juvenile" crustal provenance, possibly a dominantly upper crustal provenance. The Sm-Nd isotopic data from the older Dhanjori Formation also indicate broadly similar provenance as comparable lithologies in the younger Chaibasa Formation. Our Sm-Nd isotopic data is entirely consistent with the previous sedimentological data and confirms a terrestrial, riftdominated tectonic setting for the Dhanjori Formation (proximal sources, poorly mixed provenance) and a marginal marine to offshore setting for the more homogeneous Nd isotopic signature of the Chaibasa Formation (distal sources, well mixed provenance).

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Does AMS data from micaceous quartzite provide information about shape of the strain ellipsoid?

Mamtani

Vishnu

2011

Int J Earth Sci (Geol Rundsch)

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Pressure–temperature-deformation history for a part of the Mesoproterozoic fold belt in North Singhbhum, Eastern India

Cited by 12 publications

References 39 publications

∼1.6 Ga ultrahigh‐temperature granulite metamorphism in the Central Indian Tectonic Zone: insights from metamorphic reaction history, geothermobarometry and monazite chemical ages

∼1.6 Ga ultrahigh‐temperature granulite metamorphism in the Central Indian Tectonic Zone: insights from metamorphic reaction history, geothermobarometry and monazite chemical ages

Geochemical and Sm–Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India: Implications for provenance, and contemporary basin tectonics

Does AMS data from micaceous quartzite provide information about shape of the strain ellipsoid?

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