Tectonothermal evolution of the Banded Gneissic Complex in central Rajasthan, NW India: Present status and correlation

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

“…(d) Finally, can the Proterozoic sedimentary record in the Indian shield be taken as a marker event to delink the Early Mesoproterozoic orogenesis from the Columbia event? It is now well recognized that the Late Palaeoproterozoic to Early Mesoproterozoic orogenesis, often producing granulite‐facies rocks is an integral feature of the Indian Shield (Sarkar, Ray Barman, & Corfu, ; Dasgupta, Guha, Sengupta, Miura, & Ehl, ; Buick, Allen, Pandit, Rubatto, & Hermann, ; Chatterjee et al, ; Chatterjee, Mazumder, Bhattacharya, & Saikia, ; Saha, Bhowmik, Fukuoka, & Dasgupta, ; Kaur, Chaudhri, Racsek, Kroner, & Hofmann, ; Kaur, Zeh, & Chaudhri, ; Bhowmik et al, , , , ; Upadhyay, Gerdes, & Raith, ; Bhandari et al, ; Bose, Dunkley, Dasgupta, Das, & Arima, ; Rekha et al, ; Vijaya Kumar, Leelanandam, & Ernst, ; Bhowmik & Dasgupta, ; Sanyal & Sengupta, ; Dharma Rao, Santosh, & Chmielowski, ; Dasgupta, Bose, Bhowmik, & Sengupta, ; Dasgupta, Bose, & Das, ; Bora, Kumar, Yi, Kim, & Lee, ; Henderson, Collins, Payne, Forbes, & Saha, ; Sarkar, Schenk, & Berndt, ; Sarkar, Schenka, Appel, Berndt, & Sengupta, ; Ozha et al, ; Dey et al, ; Saikia et al, ) and also former Gondwanaland (Cutts, Hand, & Kelsey, ; Cutts, Kelsey, & Hand, ; Gibson, Rubenach, Neumann, Southgate, & Hutton, ) and Laurentian fragments (Nunn, Gower, & Thomas, ; Gower, Schurer, & Heaman, ; Gower, ; Connelly, Rivers, & James, ; Wardle, Gower, & Kerr, ; Wardle, Ryan, Philippe, & Schärer, ; Åhäll & Gower, ; Åhäll, Persson, & Skiöld, ). Therefore, it can be safely stated that orogenesis in this time period was more widespread than previously recognized.…”

Chapter 3 The Archaean and Proterozoic history of Peninsular India: tectonic framework for Precambrian sedimentary basins in India

“…In part this was due to a lack of high-quality geochronological data for the different metamorphic complexes and in part owing to the obscured nature of the contacts between the separate regions (Roy et al 2005Buick et al 2006Buick et al , 2010Ramakrishan & Vaidyanadhan 2008;Bhowmik & Dasgupta 2012). The current status of this debate is described below.…”

Study of Calc-Silicate Rocks of Hammer-Head Syncline from Southern Sandmata Complex, Northwestern India: Implications on Existence of an Archaean Protolith

“…The debated status of the basement rocks from the Sandmata Complex has recently received considerable attention (Roy et al, 2012;Bhowmik and Dasgupta, 2012;Rao et al, 2011;Bhowmik et al, 2010;Saha et al, 2008). Debate among these workers has mostly centred on the evolutionary pattern and age.…”

“…More U-Pb zircon ages point to granulite facies metamorphism at 1.725-1.72 Ga in several areas of the Sandmata Complex (Biju-Sekhar et al, 2003;Buick et al, 2006;Bhowmik et al, 2009;Saha et al, 2008;Sarkar et al, 1989). Disagreeing with this preposition other workers stated that the granulite facies metamorphism occurred later and synchronous with the Neoproterozoic magmatism at ~940-950 Ma (Buick et al, 2006;Bhowmik et al, 2010;Bhowmik and Dasgupta, 2012). The geochronological controversy related to granulite facies mostly centred around Mesoproterozoic vs Neoproterozoic, whilst the protolith which escaped metamorphism remained unidentified.…”