1991-92 - Birbal Sahni Institute of Palaeobotany

1991-92veals presence of Karharbari to Raniganj palynoassemblages. Existence of twocoal horizons - Early and Late Permian has been established. The younger coalhorizon pertaining to Late Permian is correlated to the "Sondila" Seam ofRamagundam area. Seam "A" (split seam) shows Karharbari affinity while thickseam and Seam "B" (top seam) corresponds to Lower Barakar. Presence ofLeiosphaeridia, Singraulipol/enites and lnaperturopol/enites in high percentage inUpper Permian palynoassemblages is significant as Leiosphaerids are consideredto indicate marine incursions.NeerjaJhaProgramme 2.12Objective: Organic petrographic evaluation of coals fromGodavari Basin,To assess the rank and quality of coal fromMailaram and other areasThe reflectance analysis of coals from Mulug coal bell has been carried OUI.The study revealed that these coals have a reflectance value ranging between0.70-0.75 per cent. Thus these coals can be grouped with the high volatile bituminouscoals according to the· AS T M System of coal classification.O.S.SarateProgramme 2.13Objective: Organic petrographic evaluation of coal seamsfrom Talcher Coalfield,To assess quality of coals for coking propertyand other industrial applicationsA geological study of the two working seams from Talcher Coalfield has showna complete dominance of durain rich coals in this area. However, a few prominentvilrain bands are present in the coal seams at various levels. The lower workablescam is better in quality as compared to the upper seam, as it contains more vitrainrich bands. Thc samples collected from South-Belanda, Bharatpur and Anantacollieries, are bcing processed for microscopic investigations. Besides, a detailedmegascopic study of various coal bands has also been carried out, which indicatesthat the Talchir coals are mostly composed of hard dull bands. They also soil thefinger due to the presence of fusion at various levels, suggesting fluctuatinghydrological conditions in the basin.Anand-Prakash and Rakcsh SaxenaPROJECT 3Programme 3.1Objective,CENOZOIC PLANT BIOGEOGRAPHY OFPENINSULAR INDIA,Florstics and plants megafossil biostratigrahy ofthe Deccan 1ntertrappean sediments., To study and understand the Deccan Intertrappeanfossils,To determine their age for reconstruction of vegetationalhistory and phytogeography of Peninsular21