1994-95 - Birbal Sahni Institute of Palaeobotany

BSIP
Another set ofliptinite-rich samples has been selected for spectral fluorescence measurements
on sporinite and alginite macerals. Spectral fluorescence behaviours o[ sporinite
and alginite in these Tertiary coals and in coals [rom an Upper Permian seam reveal that
Lambda max. and spectral Quotients (Q) of sporinite have relation wi[b age, whereas [bose
of alginite with rank. The plotting of Clu'omaticity Coefficients, calculated from the corresponding
fluorescence colours, on Chromaticity Diagram of International Colourimetry
System (DIN 6164 D 65.2") has been found helpful in differentiating sporinite types and
fluorescence colour.
B.K
Misra
Programme 6.11
Palynostratigraphy and correlation of Tertiary sediments
of Meghalaya
Objective
To carry out morphotaxonomic
study of recorded palynotaxa
To determine stratigraphically significant palynotaxa and their
application in zonation, correlation and dating
To infer palaeoclimate and environment of deposition
lineages of stud­
To trace botanical affinity and evolutionary
ied palynotaxa
Processing of 24 samples from the Oligocene-Lower Miocene sequences of
Boldamgiri Formation of Adugiri-Purakhasia road section in Garo Hills was completed.
Morphological studies of palynomorphs of this section have been taken up.
R.K Saxena & M.R. Rao
Processing or 75 samples [rom Palaeocene-Eocene sequences of Nongwalbibra
and Siju-Baghmara sections in Garo Hills was completed. Morphological studies of
palynofossils from these sections have been taken up.
PROJECT 7
Programme 7.1
R.K
Saxena, S. KM. Tripathi & Vandana Prasad
RECONSTRUCTION OF QUATERNARY VEGETATIONAL PATTERNS
History of vegetation and climate in tropical montane
forests in south India
Objective To build up a complete palynofloral succession of the Shola
forest/grassland in Annamalai Hills, Palni Hills and Silent Valley
Twenty soil samples from Berijam Lake profile, Palni Hills, dating back to 20,000
yrs B.P. have been pollen analysed and one pollen diagram prepared. Three vegetational
stages have been phased out in order to record all possible events and episodes which [be
vegetation has witnessed in time and space.
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