1996-97 - Birbal Sahni Institute of Palaeobotany

1996-97
LlIIulbladispora, Arcualipolleniles pellucidus, Alisporites spp., Brachysaccus indicates
the transitional phase from Permian to Triassic.
Visited easternmost part of Panagarh-Deocha, West Bengal and Rajmahal Basin
for the collection of rock samples for palynological studies. Also visited Geological
Survey of India, Calcutta for scientific discussions and consultation of literature.
Programme 2.9
Organic petrographic evaluation of Permian coal seams
from Rajmahal Basin, Bihar
B.K. Misra & B.D. Singh
Prepared 58 coal pellets from bore-hole RJP-II which encountered nine coal
seams in Pachwara Coalfield. Quantitative study under normal incident light revealed
that the coals contain variable proportions of macerals of vitrinite and inertinite groups.
Whereas, liptinite macerals are poor. In fact, inherent argillaceous mineral matter
intimately associated with liptinites tend to mask them, at times completely, rendering
their identification difficult. However, study under fluorescence mode (blue light
excitation) shows manifold increase in relatively hydrogen-rich liptinite contents, and
is chiefly constituted by sporinite (spores-pollen), alginite (algae) and liptodetrinite
(detritus). Reflectance measurements taken on vitrinite particles suggest that Pachwara
coal; are of sub-bituminous A to high-volatile bituminous Crank (Ro max. 0.42-0.56%).
Visited Central Mine Planning and Design Institute Limited (CMPDlL), Ranchi,
Central Fuel Research Institute (CFRI) and Indian School of Mines (ISM) Dhanbad
for consultation and scientific discussions. Dakra and Piparwar collieries were also
visited along with the scientists of CMPDlL. The samples were collected for organic
petrological studies from these collieries.
Programme 2.10
Pramod
Kumar
Palynology of the Gondwana Sequence in Satpura Basin
Palynology of Almod Beds in Satpura Basin has been studied. The
palynoassemblage is dominated by Striatopodocarpiles (24-27%) followed by
Fatlllipolleniles (4-13%), which continue from the Late Permian, Bijori Formation in
Satpura Basin. The presence of the significant palynotaxa, viz., Arcuatipollenites,
Play[ordiaspora, Lundbladispora, Chordasporites, Klausipollellites, Alisporiles,
Salsallgisacciles, Falcisporites, Goubillispora, Dellsoisporites, Cycadopites, etc. in
the palynoassemblage indicates onset of Early Triassic age.
Palynostratigraphic study of the sediments exposed at Tamia Scarp (Pachmarhi
Formation) near Chota Mahadeva and Tamia Ghat Road at Tamia in Chhindwara District,
Madhya Pradesh has been continued. The palynoassemblage contains the dominance
of Falcisporites (25-28%) followed by Satsallgisaccites (14-15%). The other significant
forms are NidipollellileS, Podocarpidites, Alisporites, Klausipollellites, Goubillispora.
Tmchosporites. LUlldbladispora, Brachysaccus, Staurosaccites, Weylalldites, etc. It has
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