Structural framework for the emplacement of the Bolangir anorthosite massif in the Eastern Ghats Granulite Belt, India: implications for post-Rodinia pre-Gondwana tectonics

Geological evolution of the northern and northwestern Eastern Ghats Belt, India from metamorphic, structural and geochronological records: An appraisal

“…These anorthosite complexes resulted by crystallization of anorthositic magma at~0.98-0.93 Ga (Krause et al, 2001;Raith et al, 2014;Dharma Rao et al, 2014) and subsequently metamorphosed during~0.90-0.88 Ga. Structural analyses of Bolangir anorthosite complex (Nasipuri and Bhadra, 2013) moreover suggest that the emplacement of anorthosite pluton was syn-tectonic with respect to the regionally pervasive D 3 deformation (~1.0-0.9 Ga). Late Neoproterozoic to early Paleozoic zircon U-Pb ages from the above complexes additionally indicate thrusting of Khariar and Rampur areas over westerly placed BC during the Pan-African event (Raith et al, 2014 and references therein, Ravikant, 2019).…”

In situ U–Th–Pbtotal dating of polychronous monazite in the Koraput anorthosite pluton, Eastern Ghats Granulite Belt (India), and implications

“…In the Grenvillian-age EGP comprising the WKZ, CMZ and EKZ, massif anorthosites occur at Chilka Lake (Sarkar, B hanumathi & B alasubrahmanyan, 1981; Bhattacharya, Sen & Acharyya, 1994; Mukherjee, Jana & Das, 1999; Krause et al . 2001; Dobmeier & Simmat, 2002; Chatterjee et al 2008), Bolangir (Tak, Mitra & Chatterjee, 1966; Tak, 1971; Mukherjee, Bhattacharya & Chakravorty, 1986; Raith, Bhattacharya & H oernes, 1997; Bhattacharya et al 1998; Mukherjee, Jana & Das, 1999; Krause et al 2001; Prasad et al 2005; Nasipuri & Bhattacharya, 2007; Nasipuri, Bhattacharya & Satyanarayanan, 2011; Nasipuri & Bhadra, 2013), Turkel (Maji, Bhattacharya & Raith, 1997; Maji & Sarkar, 2004; Raith et al 2014; Dharma Rao, Santosh & Zhang, 2014 a ), Jugsaipatna (Mahapatro, Nanda & Tripathy, 2010; Dharma Rao, Santosh & Zhang, 2014 b ), Koraput (Bose, 1960, 1979) and Udaigiri (Mahapatro et al 2013). The central parts of the plutons are dominated by anorthosite, whereas leuconorite and noritic anorthosite dominate the pluton margins.…”

Gondwana collision

“…(13) Nasipuri and Bhadra (2013) discuss the tectonic evolution of the Bolangir belt-like anorthosite complex and the adjoining granulites from the Eastern Ghats Granulite Belt. The guest editors of the issue tried to choose contributions to cover the whole of Gondwana; however, to cover a supercontinent, many more contributions would have been required.…”