Recognition of Pre-Grenvillian and Grenvillian Tectonothermal Events in the Central Indian Tectonic Zones: Implications on Rodinian Crustal Assembly

Co and postseismic characteristics of Indian sub-continent in response to the 2004 Sumatra earthquake

“…In the Indian region, it is clear that the magnitude of the coseismic displacements decreases with increasing latitude and fits best into the modeled values. It seems CITZ has no role in limiting the coseismic displacement to its north, despite it is well known that the mantle region in the CITZ region, especially the central part, is reported to be anomalous in nature, owing to elastic strength variations across CITZ and magmatic under-plating as postulated by several workers (Roy et al, 2001;Stephen et al, 2005). We could not delineate the postseismic transient at POND due to paucity of data.…”

Comparative petrogenesis and tectonics of Paleoproterozoic Malanjkhand and Dongargarh granitoids, Central India

“…It bisects the Peninsular Indian subcontinent into two halves (Yedekar et al, 1990;Acharyya, 2003). The CITZ lies in the north-northwestern contact formed because of accretion of the Bundelkhand Craton and Bastar Craton (Yedekar et al, 1990;Roy et al, 2001Roy et al, , 2006. The southern boundary of the CITZ is associated with granulite belt with high strain ductile shear zone called Central Indian Suture (CIS) is $500 km in length trending ENE-WSW from southeast of Nagpur to south of Korba (Jain and Yedekar, 1989;Jain et al, 1991;Mall et al, 2008).…”

Fractal analysis of quartz grain boundary sutures in a granite (Malanjkhand, Central India) — Implications to infer regional tectonics

“…This would also imply that the suggestion by other earlier workers (e.g. Roy et al 2001) that CIS formation is related to the 1.5 Ga tectonothermal rejuvenation of the CITZ needs to be reconsidered. In contrast to the above, if the granite followed path-b, then stage-1 to 2 (path-b, Fig.…”

“…Therefore, they concluded that the collision between the Bundelkhand and Bastar cratons took place between 2500 and 1800 Ma. According to Roy et al (2001), the CITZ represents a Proterozoic mobile belt, which evolved between 2.4-1.8 Ga. According to these workers, the CITZ has experienced at least three tectonothermal events at ~1.8 Ga, ~1.5 Ga and 1.0 Ga; each event is characterized by collisional tectonism and crustal recycling and the final suturing of the Bundelkhand and Bastar cratons occurred at ~1.5 Ga (also see Collins and Pisarevsky, 2005).…”

“…Thus, the process of emplacement and initial fabric development followed by solidification of the granite along path-b would have taken place at ~2.48 Ga, which is the age of the granite. It is known from past studies that the CITZ underwent tectonothermal rejuvenation at 1.8, 1.5 and 1.1 Ga and it has been suggested that the final collision of the BKC and BC that led to CIS formation took place during the 1.5 Ga event (Yedekar et al 1990;Roy et al 2001;Yoshida, 2001;Collins and Pisarevsky, 2005). Therefore, it is likely that after stage-2, the granite, especially its northern part was rejuvenated to allow ductile deformation synchronously with the formation of the CIS (stage-3 along path-c in Fig.…”