1995-96 - Birbal Sahni Institute of Palaeobotany
1995-96 - Birbal Sahni Institute of Palaeobotany
1995-96 - Birbal Sahni Institute of Palaeobotany
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BSIP<br />
Programme 5.7 Palynology, palaeoecology and palaeogeography <strong>of</strong> the Tertiary<br />
sediments <strong>of</strong> Nepal Himalaya<br />
Objective<br />
To study palyn<strong>of</strong>ossils from the Mio-Pliocene sediments<br />
To carry out palynozonation and age determination <strong>of</strong> assemblages<br />
together with reflections on the past vegetation and environment<br />
<strong>of</strong> deposition<br />
A Late Miocene palyn<strong>of</strong>loral assemblage recovered from Siwalik sediments exposed<br />
at Bhalubong area <strong>of</strong> western Nepal has been studied. It contains a variety <strong>of</strong> spores,<br />
pollen grains and algal remains. Pteridophytic spores and gymnospermous pollen grains<br />
dominate the assemblage followed by algal remains and angiosperm pollen grains. Based<br />
on quantitative analysis several palyn<strong>of</strong>loral associations have been recognised. The overall<br />
palyn<strong>of</strong>loral evidences point out the prevalence <strong>of</strong> subtropical climate in the area.<br />
Seven forms <strong>of</strong>fossil zygospores referable to the family Zygnemataceae (Algae)<br />
were recovered from the Siwalik sediments <strong>of</strong> Surai Khola and its adjoining areas <strong>of</strong><br />
western Nepal. The occurrence <strong>of</strong> zygospores in the assemblage indicates that the basin <strong>of</strong><br />
deposition experienced clean, stagnant, shallow fresh water which must have been fairly<br />
warm to allow the zygospore formation.<br />
Samir Sarkar<br />
Programme 5.8<br />
Objective<br />
Palyn<strong>of</strong>loral study <strong>of</strong> Siwalik sediments<br />
Himachal Pradesh<br />
from Punjab and<br />
To study morphotaxonomy <strong>of</strong> spore-pollen from the Miocene<br />
Pliocene sediments<br />
To attempt palynozonation, age determination and correlation<br />
To determine the palaeoclimate and environment <strong>of</strong> deposition<br />
prevailing at the time <strong>of</strong> sedimentation<br />
Consulted pertinent literature to find out the existing<br />
sedimcnts in the area <strong>of</strong> investigation.<br />
Programme 5.9<br />
Objective<br />
Literature<br />
existing gaps.<br />
gaps <strong>of</strong> knowledge on Siwalik<br />
M.R. Rao<br />
Palynological investigations <strong>of</strong> Siwalik sediments exposed<br />
in Ambala District, Haryana<br />
To determine the Neogene vegetational composition and vegetational<br />
history <strong>of</strong> this area based on palynological studies<br />
To conduct phytogeographic study <strong>of</strong> recorded palynotaxa<br />
zonation and correlation <strong>of</strong> the inves<br />
To attempt palynological<br />
tigated sediments<br />
related to Siwalik sediments <strong>of</strong> the area was consulted to find out the<br />
S.K.M. Tripathi<br />
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