1996-97 - Birbal Sahni Institute of Palaeobotany

BSIP
Palynological investigations of outcrop samples from Mangra Ohara Nala (near
Chal\i Village) and Moran River (near Wadrafnagar) revealed a dominance of striate
disaccates mainly represented by Fallllipo/lelli/e.\', Slria/opodoclirpiles, Striatite.\ and
Crescl'Jllipo/leJ1ill's. Good representation oflrilclcs is aha seen. The palynoasscmblagc
is comparable to the SlriatopodocarfJileS~CreSCe1l1ip()"el1i{es Assemblage Zone
representing Upper Raniganj (Late Permian) palynozone. Palynofloristically. the two
sections are comparable.
Palynological studies of coal-carbonaceous shale samples outcropping just north
of hore hole TRM-I in the Banki River were carried out to correlate the surface exposures
with that of the upper part of the sequence in bore hole TRM-I. Dominance of striate
disaccatcs (FWUlipol/l'llileS - Striariles - Striatopodocarpites) along with Dellsipo/lellill'S
l1Ia~llir(}rpIfS has heell recorded which represent Raniganj PalYllozonc.
Samples from conglomerate beds occurring in different formations, and from
Panchet mudstone sequence (below Juba Pahar on Manikpur road) were collected
during the Field workshop organised by Coal Wing, G.S.'-, and macerated for
palynodat ing. However, all the ahove samples were found to be devoid of palynofossi Is.
Visited Tatapani-Ramkola Coalfield and studied ;n detail various Gondwana
formations exposed in the area in relation to structural and lithological characteristics.
Collected coal and carhonaceous shale samples from bore-holes TRDM-2 and TRSS­
I and from various outcrop sections for palynological studics.
Programme 2.17: Evolutionary diversification of Cretaceous flora of
Pranhita·Godavari Graben
A. Rajanikanth
Morphotaxonomy of conifer strobilii, COllilCS and Pot/ostro!JlfS has been
analysed. the latter being the first report from the Gangapur Formation. S/achrolaxlIs
has been described for the first time from the Gangapur Formation. Taxa assigned to
Taelliopleris, AIIOm()~Wl1ites, Ptilophyllum, Pagiophyllum and E/atoc!adlls have been
systematically describcd. The entire assemblagc of Gangapur ,Formation has been
compared with floral assemblages known from the pericratonic east-coast basins.
Taphonomic bias in the interpretation of fossil plant evidences has been evaluated.
Visited Wardha-Pranhita·Godavari Valley and collected a number of fossil
specimens and sediment samples.
Programme 2.18 : Petrographic evaluation of coals from Ramkola· Tatapani
Coalfield, Madhya Pradesh
Anand Prakash & Shinjini Sarana
Maceral and microlithotype analyses of coals from hore-holes TRS-15 and
TRS-16 were completed. A brief report on the petrological assessment of coals from
bore-hole TRS·15 was sent to GSI. Coal Wing. Calcutta. Rcyaluat ion of reflectance is
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