Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, Central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics

Khanna, Tarun C.; Bizimis, Michael; Barbeau, David L.; Krishna, A. Keshav; Sai, V. V. Sesha

doi:10.1016/j.earscirev.2018.11.014

Cited by 36 publications

(13 citation statements)

References 60 publications

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“…The above observation is also supported by the disposition of these samples in the Hf/Sm vs. Ta/La plot (Figure 8B). The available detrital zircon age data from the Bastar Craton indicates very older provenance, as old as extending from the Paleoproterozoic to Paleoarchean (1.75-3.67 Ga) (Khanna et al, 2019). Thus, the mantle enrichment, as evident in the case of Kanker sanukitoids, is possibly an outcome of sediment melting associated with earlier episode(s) of subduction.…”

Section: Petrogenesis Of the Kanker Granites Sourcementioning

confidence: 99%

“…The Dongargarh Supergroup, constituting the supracrustals and granites, is further divided into Nandgaon and Khairagarh groups being separated by the Dongargarh granite (Deshpande et al, 1990). The Nandgaon Group consists of Bijli rhyolite and Pitapani basalts and andesites, whereas the Khairagarh Group consists of basalts interlayered with sandstone and arenites (Khanna et al, 2019). The volcanic rocks of the Dongargarh Supergroup, referred to as the Kotri-Dongargarh Mobile Belt (KDMB), are interpreted to have erupted by ∼2.5 Ga (Asthana et al, 2016;Manikyamba et al, 2016;Khanna et al, 2019), and are considered to have evolved in an arc setting (Asthana et al, 2018).…”

Section: Geology Of the Bastar Cratonmentioning

confidence: 99%

“…There has been widespread granitic magmatism in the Indian shield, as seen in the Aravalli, Bundelkhand, Dharwar, and Bastar cratons during the Archean-Proterozoic boundary (Jayananda et al, 2020). The Bastar Craton (Figure 1), with abundant Archean-Proterozoic supracrustals and granitoids, hold critical clues reflecting the significant changes that occurred during this period (Khanna et al, 2019;Mondal et al, 2019;Santosh et al, 2020). Malanjkhand, Dongargarh, and Kanker are the three major granitic plutons emplaced during the Archean-Proterozoic transition in the Bastar Craton.…”

Section: Introductionmentioning

confidence: 99%

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Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

et al. 2020

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Archean-Proterozoic boundary represents a significant transitional phase in the Earth's history. Bastar Craton is one of the major Archean cratons in the Indian subcontinent with voluminous granites, supracrustal rocks, and tectonic belts. Malanjkhand, Dongargarh, and Kanker are the three major granitic plutons emplaced during the Archean-Proterozoic transition in the Bastar Craton, and this study is confined to the granites of Kanker pluton. Based on geochemical systematics, the Kanker granites are classified into sanukitoids, biotite and two-mica granites, and hybrid granites. The compositional diversity of the Kanker granites is attributed to two end-member sources, i.e., the enriched mantle and an older felsic crust, and the interactions between them. The sanukitoids were derived from an enriched mantle source that was metasomatized by the subducted sediments. Heat supplied by the sanukitoid magmas induced the crustal melting to form the biotite and two-mica granites. The interaction between these two mutually end-member sources, i.e., the enriched mantle and an older felsic crust, resulted in the formation of hybrid granites. The evolution of the Kanker granites can be accounted for a transitional geodynamic environment, involving subduction, and collisional tectonics during the Archean-Proterozoic transition.

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Section: Petrogenesis Of the Kanker Granites Sourcementioning

confidence: 99%

Section: Geology Of the Bastar Cratonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

et al. 2020

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“…3.38-3.60 Ga) and −8.8 to −4.3 (model ages, T DM C : 3.27-3.54 Ga) for volcanic units and granitoids, respectively, indicating a Palaeoarchaean crustal source (Manikyamba et al 2016), likely in a continental margin setting. On the basis of bulk-rock geochemistry and Hf-Nd systematics, the Dongargarh volcanic rocks represent an Andean-type magmatic arc developed along the northern part of the Bastar Craton (Khanna et al 2018).…”

Section: T Deshmukh and N Prabhakarmentioning

confidence: 99%

Linking collision, slab break-off and subduction polarity reversal in the evolution of the Central Indian Tectonic Zone

Deshmukh

Prabhakar

2020

Geol. Mag.

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The Central Indian Tectonic Zone demarcates the zone of amalgamation between the North Indian Craton and the South Indian Craton. Presently, the major controversies in the existing tectonic models of the Central Indian Tectonic Zone revolve around the direction of subduction and the precise timing of accretion between the North Indian Craton and the South Indian Craton. A new model for the tectonic evolution of the Central Indian Tectonic Zone is postulated in this contribution, based on recent geological and geophysical evidence, combined with previously documented tectonic configurations. The present study employs the slab break-off hypothesis and subsequent polarity reversal to explain the tectonic processes involved in the evolution of the Central Indian Tectonic Zone. We propose that the subduction initiated (c. 2.5 Ga) in a S-directed system producing island-arc sequences on the South Indian Craton. The southward subduction regime culminated with slab break-off underneath the South Indian Craton between c. 1.65 Ga and 1.55 Ga, which subsequently induced subduction polarity reversal and set the course for N-directed subduction (<1.55 Ga). The final closure along the Central Indian Tectonic Zone is governed by the collisional regime during the Sausar Orogeny (1.0–0.9 Ga).

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“…The intracratonic orogeny occurs as a narrow orogenic belt and known as Kotri‐Dongargarh orogeny (KD) within the Bastar Craton. The KD orogeny made of successive cycles of sedimentation and volcanism consists of Bailadila, Nandagaon, and Khairagarh groups (Khanna, Bizimis, Barbeau, Krishna, & Sai, ). Large bodies of granitoids, namely Dongargarh, Malanjkhand, and Kanker are formed during the Neoarchean/Paleoproterozoic era, which intrudes the gneisses and supracrustal rocks.…”

Section: Introductionmentioning

confidence: 99%

Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India

et al. 2019

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The interaction between the coeval mafic and felsic magmas result in mixing, mingling, and chemical exchanges between both the end‐member magmas. We document the features relevant to the magma chamber processes and quantify the extent of mixing by means of detailed field, petrographic, mineral, and whole‐rock geochemistry from one of the less known granitic plutons from the Pithora region that forms part of the Kanker granite, Bastar Craton. The study area is composed of granite, granodiorite (mixed zone), and quartz diorite microgranular enclaves (MEs). The occurrence of syn‐plutonic mafic dykes, cuspate contact, magmatic flow textures, and hybridization suggest the coeval emplacement of end‐member magmas. Petrographic evidence such as disequilibrium textures such as resorption, quartz ocelli, and spikes in plagioclase, acicular apatites, and mafic clots are formed by magma mixing. Plagioclase from MEs and the mixed region exhibit disequilibrium textures such as normal, reverse, and oscillatory zoning suggestive of magma mixing. Whole‐rock geochemical data indicates the metaluminous to peraluminous host granites and metaluminous ME. The broadly linear trend of geochemical variation diagrams for these granitoids and MEs showcase the hybridization of two end‐member magmas. The mineral chemistry of the biotites and hornblende show subduction affinity, being further constrained by whole‐rock trace elemental systematics. The granitoids of Pithora region were formed in a subduction setting where large‐scale mantle‐ and crustal‐derived magmas were generated and subsequently mixed at crustal emplacement level.

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Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, Central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics

Cited by 36 publications

References 60 publications

Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

Linking collision, slab break-off and subduction polarity reversal in the evolution of the Central Indian Tectonic Zone

Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India

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Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, Central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics

Cited by 36 publications

References 60 publications

Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

Petrogenesis of the Kanker Granites From the Bastar Craton: Implications for Crustal Growth and Evolution During the Archean-Proterozoic Transition

Linking collision, slab break-off and subduction polarity reversal in the evolution of the Central Indian Tectonic Zone

Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India

Contact Info

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Resources

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Evolution of ca. 2.5 Ga Dongargarh volcano-sedimentary Supergroup, Bastar craton, Central India: Constraints from zircon U-Pb geochronology, bulk-rock geochemistry and Hf-Nd isotope systematics