The Archaean Nucleus of Singhbhum: The Present State of Knowledge

New U-Pb zircon ages from Paleo-Mesoarchean TTG gneisses of the Singhbhum Craton, Eastern India

“…1). Rb-Sr ages of 3.1-3.2 Ga (Saha, 1994;Mukhopadhyay, 2001) obtained from SBG and other suites of rocks record a widespread thermal event possibly coinciding with the emplacement of the SBG-B. Zircon ages also indicate a widespread metamorphic event at 3.2 Ga.…”

Mineralogical and geochemical characteristics of scheelite-bearing skarns, and genetic relations between skarn mineralization and petrogenesis of the associated granitoid pluton at Sargipali, Sundergarh District, Eastern India

“…The texture of the igneous rock is not observed in these exoskarns. The dominant minerals are clinopyroxene (up to 65%) and garnet (5-10%) as prograde assemblages, green amphibole Mukhopadhyay, 2001) showing the area of investigation. (b) Geological map of the area around Sargipali (modified after Chowdhury, 2002).…”

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

“…From south to north, these are: (1) the southern Archaean nucleus encompassing various granitoids, Iron Ore Group of rocks, and Late Archaean siliciclastics (cf. Mukhopadhyay, 2001;Mazumder et al, 2012b) (2) the almost 200 km long North Singhbhum Fold Belt comprising the Dhanjori, Chaibasa, Dhalbhum, Dalma and Chandil Formations (cf. Sarkar and Saha, 1962;Basu, 1991, 2000;Acharyya, 2003), and (3) the extensive granite-gneiss and migmatite terrain in the north, known as the Chottonagpur Gneissic complex (Figs.…”

“…1) is among one of the few Precambrian terrains in the world that reportedly records sedimentation and volcanism in a changing tectonic scenario ranging from Palaeo-archaean to Mesoproterozoic (Saha, 1994;Mazumder et al, 2000Mazumder et al, , 2012aMukhopadhyay, 2001;Mazumder, 2005;Eriksson et al, 2006;Prabhakar and Bhattacharya, 2013; Mukhopadhyay, 2001). The Singhbhum granitoid and the eastern (E), western (W) and southern (S) Iron Ore Group of rocks constitute the Archaean Singhbhum nucleus (see Mukhopadhyay, 2001 andMazumder et al, 2012 for details). Mukhopadhyay et al, 2014;Nelson et al, 2014).…”