The Bastar craton, central India: A window to Archean – Paleoproterozoic crustal evolution

Santosh, M.; Tsunogae, Toshiaki; Yang, Cheng‐Xue; Han, Yue-Sheng; Hari, K.R.; Prasanth, M.P. Manu; Uthup, Sam

doi:10.1016/j.gr.2019.09.012

Cited by 68 publications

(14 citation statements)

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“…The major Neoarchaean granitic plutonism in the Aravalli Craton (e.g., Dey et al, 2019; Kaur et al, 2019; Roy & Kröner, 1996; Wiedenbeck et al, 1996 this study; see Figure 1b) has counterparts elsewhere in the Indian Shield (Figure 1a). Coeval granitoids occur in the adjacent Bundelkhand Craton in northern India (Kaur, Zeh, Chaudhri, & Eliyas, 2016; Mondal, Goswami, Deomurari, & Sharma, 2002; Singh et al, 2019), the Bastar Craton in central India (Santosh et al, 2020), and the Dharwar Craton in southern India (Bhaskar Rao, Sivaraman, Pantulu, Gopalan, & Naqvi, 1992; Jayananda et al, 1995; Ram Mohan et al, 2014). Such Neoarchaean magmatism is also observed in other cratons of the world, including the Congo Craton as noted (Tchameni et al, 2000), the Kaapvaal, Pilbara, and North China cratons, and the Superior Province (Laurent et al, 2014; Singh et al, 2019, and references therein).…”

Section: Discussionmentioning

confidence: 99%

“…In the Bundelkhand Craton, extensive anatexis of older TTG crust during the Neoarchaean is inferred to have produced granodioritic gneisses with ε Hf t values of 1.3 to −14.8 (Kaur et al, 2016), voluminous potassic granites with ε Hf t values of 0.3 to −11.4 (Kaur et al, 2016) and ε Nd t values of −6.8 to −8.5 (Pandey et al, 2011), and sanukitoids with ε Nd t values of −1.7 to −3.6 (Singh et al, 2019). In the Bastar Craton, ~2.7 Ga zircons in a trondhjemite have yielded ε Hf t values of −9.9 to −12.5 (Santosh et al, 2020). In the Western Dharwar Craton, the Neoarchaean Gadag granites have ε Hf t values ranging from +6.7 to −13.0 (Ram Mohan et al, 2014), and a Sargur granite and a Biligirirangan Hills granodiorite, thought to have been derived from anatexis of Palaeoarchaean mafic crust, have ε Hf t values of +0.4 and +0.7, respectively (Ranjan, Upadhyay, Abhinay, & Srikantappa, 2020).…”

Section: Discussionmentioning

confidence: 99%

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Neoarchaean crustal reworking in the Aravalli Craton: Petrogenesis and tectonometamorphic history of the Malola granite, Bhilwara area, northwestern India

D’Souza

Sheth

et al. 2020

Geological Journal

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The Banded Gneissic Complex of the Aravalli Craton of northwestern India comprises Palaeo‐ to Neoarchaean (3.3–2.7 Ga) gneisses, including tonalite–trondhjemite–granodiorite (TTG) gneisses, intruded by Neoarchaean (2.6–2.5 Ga) TTGs, sanukitoids, and potassic granites. The latter include the Malola granite that crops out near Bhilwara and forms the basement for the Mesoproterozoic Pur‐Banera mineralized belt. The granite has experienced three deformation events, represented by an S1 foliation and superimposed open folds and dextral shears. Textural evidence and thermobarometry indicate that prograde metamorphism initially forming actinolite and subsequently diopside, and culminating in the upper amphibolite facies, was followed by retrograde metamorphism in the greenschist facies with fluid influx, forming zoisite. Zircon geochronology yields a crystallization age of 2,538 ± 11 Ma and indicates a prominent metamorphic overprint in the region at 1,307 ± 9 Ma. The Malola granite has low Sr–Nd isotopic ratios, enrichments in fluid‐mobile elements (Cs, Rb, Ba, Th, and Pb), and depletions in alteration‐resistant elements (Nb, Ta, and Ti). These characteristics combined with mineralogical evidence suggest that the granite was derived by anatexis of older crystalline crust (possibly granulitic lower crust) in the same subduction zone setting inferred previously for other Neoarchean granitoids in this region. Geochemical and Sr–Nd–Hf isotopic similarities between the Malola granite and Neoarchaean granitoids of the Aravalli, Bundelkhand, Bastar, Dharwar, and Congo cratons indicate a major role for anatectic crustal reworking in their genesis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Neoarchaean crustal reworking in the Aravalli Craton: Petrogenesis and tectonometamorphic history of the Malola granite, Bhilwara area, northwestern India

D’Souza

Sheth

et al. 2020

Geological Journal

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“…The geochemical signatures including REEs and trace elements (Figure c,d), and low compatible element abundance (Table S2), suggest an enriched mantle as the potential source for the mantle‐derived member (J. J. Chen, Wei, et al, ; Xiong et al, ; Santosh et al, ). The adjacent Bairiqili and Annage gabbros provide examples of enriched mantle magmatism during Early–Middle Triassic in the EKLO (Xiong et al, ; X. Zhao et al, ).…”

Section: Discussionmentioning

confidence: 99%

Anisian granodiorites and mafic microgranular enclaves in the eastern Kunlun Orogen, NW China: Insights into closure of the eastern Paleo–Tethys

Wei

Santosh

et al. 2020

Geological Journal

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Granitoids and their mafic microgranular enclaves (MMEs) provide important insights into magmatic activity and tectonic evolution associated with accretionary orogens. Here we investigate the origin of Middle Triassic granodiorites and MMEs in the central segment of the eastern Kunlun Orogen (EKLO) in NW China, which is an important region to evaluate the history of closure of the Paleo–Tethys, through zircon U–Pb geochronology, major and trace element geochemistry, and Sr–Nd–Hf isotopes. Zircon U–Pb ages indicate the coeval formation of granodiorites and their MMEs during the Anisian (ca. 245 Ma). The granodiorites are calc‐alkaline and metaluminous with high SiO2 contents and Mg# values. They are characterized by enrichment of LREEs and LILEs, and depletion of Nb, Ta, and Ti. Their Sr–Nd –Hf isotopic compositions indicate that the magmas were derived from enriched mantle and Paleoproterozoic basement. The monzodioritic‐dioritic MMEs exhibit low SiO2 contents and high Al2O3 and MgO with high Mg# values, enrichment in LREEs and LILEs, and depletion in HFSEs with negative Nb, Ta, Ti, and P. In contrast, the gabbroic MMEs show higher Mg# values and Cr contents. Both types of MMEs have Sr–Nd–Hf isotopic compositions similar to the host granodiorites, and originated from mixing of lower crust‐ and enriched mantle‐derived magmas. The mantle‐derived sources were metasomatized by slab‐derived melts. The Middle Permian to Middle Triassic magmatism, metamorphism, sedimentation, and tectonics in the EKLO suggest northward subduction of the Paleo–Tethys Ocean as represented by the A'nyemaqen Ocean. The magma mixing that generated the Anisian granodiorites and MMEs was likely associated with slab break‐off of the Paleo–Tethys Ocean. The formation of the Anisian magmatic rocks in the EKLO suggest that the cessation of subduction of the Paleo–Tethys Ocean and onset of collision took place during the late stage of Middle Triassic.

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“…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%

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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The Bastar craton, central India: A window to Archean – Paleoproterozoic crustal evolution

Cited by 68 publications

References 94 publications

Neoarchaean crustal reworking in the Aravalli Craton: Petrogenesis and tectonometamorphic history of the Malola granite, Bhilwara area, northwestern India

Neoarchaean crustal reworking in the Aravalli Craton: Petrogenesis and tectonometamorphic history of the Malola granite, Bhilwara area, northwestern India

Anisian granodiorites and mafic microgranular enclaves in the eastern Kunlun Orogen, NW China: Insights into closure of the eastern Paleo–Tethys

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

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