Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

S. Ray ¹, P. Chakrabarti ²

Affiliations
1 Department of Geology, G. C. College, Silchar (Assam), IN
2 Department of Geology, Presidency College, Calcutta, IN

Abstract

During the Upper Vindhyan times there was a northwesterly flow of current prevailing throughout the Great Vindhyan Basin of Northern India.

Full Text

   

P. Chakrabarti ¹

Affiliations
1 Geological Survey of India, Orissa Circle (N), Bhubaneswar-14, IN

Abstract

The Lower Rewa Sandstone is medium to fine grained, moderate to well sorted, mature, symmetrical to positively skewed, mesokurtic to leptokurtic, quartz-arenite. Ripple marks are present whereas cross-stratifications are not common. Vector analysis indicates a north-westerly palaeocurrent direction. From the study of the petrological characters, elongation quotient of the quartz grains, C-M pattern distribution of the quartz grains and palaeocurrent azimuthal pattern, a beach environment of deposition with a steady supply of sediments from a granitic source area is postulated.

Full Text