1996-97 - Birbal Sahni Institute of Palaeobotany

BSIP
Discovered for the first time a diagnostic suit of Nannoceratopsis species, viz.,
N. dictyoambonis, N. ambon is and N. plegas in the subsurface sequence of Lakhpat
bore hole, Kutch Basin suggesting Late Aalenian-Early Bajocian age. The detailed
morphological study of dinoflagellate cyst assemblages from supratrappean outcrop
sequence belonging to the lower part of Naredi Formation was done. Dinoflagellate
cyst productive levels from Harudi Formation are being identified.
PROJECT 5
PALAEOFLORISTIC DIVERSIFICATION IN HIMALAYA
Programme 5.2
Vijaya
Palynofloras of the Tethyan sediments of Himalaya, their
provenance and regional relationship
Benchmark palyno-events at the transition of Permo-Triassic in the marine
sequence of Tethys Himalaya were studied and tagged them with those in continental
sediments in Raniganj Coalfield of Damodar Basin.
Programme 5.3 Palynostratigraphic studies, evaluation of rank and properties
of coal and associated sediments in eastern Himalaya
Suresh C. Srivastava
& A.P. Bhattacharyya
The samples from Kalijohra. Gish and Lish River sections in Darjeeling District
were remacerated. The samples were tried with various techniques. The bore-hole
samples from Bhutan were studied palynologically. Striate disaccate along with
Dmsipollenites are dominant in the assemblage. The presence of sulcate palynofossils
are common in the assemblages.
Programme 5.4 : Palynological history of the Tertiary sediments of Jammu
area
Samir Sarkar
& Vandana Prasad
Palynostratigraphical study of Subathu sediments, collected from 7 measured
sections in the Kalakot and its adjoining areas, has been completed. The palynoflora
comprises 35 genera and 48 species and are distributed in several palynoassociations.
Dinoflagellate cysts and fungal spores/ascostromata constitute an important part of the
assemblage, though pteridophytic spores and angiospermous pollen have also been
recorded. Palaeocene dinocyst taxa were recorded for the first time from the Beragua
Formation. On the basis of palynological assemblage, it is postulated that the basin
was very shallow and the sediments were deposited in marine condition.
Palynological study of the Siwalik sediments of three measured sections. viz.,
Papar-Mansar, Parmandal-Uttarbaini and Jajarkotly-Bantala has also been completed.
All the samples of the Jajarkotly-Bantala Road section proved to be barren, whereas
the samples from Mansar and Uttarbaini areas have yielded very poor palynoassemblage.
34