Shallow marine and coastal eolian quartz arenites in the Neoarchean-Palaeoproterozoic Karutola Formation, Dongargarh Volcano-sedimentary succession, central India

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

“…The Dongarhgarh volcanic rocks have Rb -Sr ages of 2465 + 22 and 2270 + 90 Ma (Sarkar et al 1981;Krishnamurthy et al 1988). Chakraborty & Sensarma (2008) largely dismiss the inconsistency within the Rb -Sr data and argue, on the basis of correlation with well-dated units in the Singhbhum Craton, that the Nandgoan Group was developed c. 2.5 Ga. We view all these age estimates as tentative until more precise U -Pb ages are acquired.…”

Precambrian crustal evolution of Peninsular India: A 3.0 billion year odyssey

“…The Dongargarh volcanic rocks have Rb-Sr ages of 2465 ± 22 Ma and 2270 ± 90 Ma (Sarkar et al, 1981;Krishnamurthy et al, 1988). Chakraborty and Sensarma (2008) largely dismiss the inconsistency within the Rb-Sr data and argue, on the basis of correlation with well-dated units in the Singhbhum Craton, that the Nandgoan Group was developed $2.5 Ga. We view all these age estimates as tentative until more precise U-Pb ages are acquired.…”

Chapter 11 Palaeoproterozoic supracrustals of the Bastar Craton: Dongargarh Supergroup and Sausar Group

“…On the other hand, the latter shows I-type character and geochemical signatures of volcanic-arc to syncollision granite . The arenites of this formation contain adhesion structures, indicating aeolian contribution to shallow-marine deposition environment (Chakraborty & Sensarma 2008). However, there are two schools of thought regarding the tectonic setup of this granite.…”

“…The former shows characteristics of A-type granite with sporadic development of rapakivi texture, geochemical signatures of within-plate granite. Process-based facies analysis of this unit has led to identification of five facies: (a) inner shelf; (b) shoreface; (c) delta mouth/lower delta plain; (d) tidal flat; and (e) foreshore/backshore (Chakraborty & Sensarma 2008). Geochemical discrimination indicates that the Malanjkhand granite is an I-type (Pandit & Panigrahi 2012).…”