1996-97 - Birbal Sahni Institute of Palaeobotany
1996-97 - Birbal Sahni Institute of Palaeobotany
1996-97 - Birbal Sahni Institute of Palaeobotany
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BSIP<br />
Chemical processing <strong>of</strong> the Tertiary sediments from Kundra, Quilon and Warkalli<br />
in the state <strong>of</strong> Kerala was done. Morphotaxonomic study <strong>of</strong> the spores and pollen from<br />
different stratigraphic levels has been done. Some pollen were also studied under SEM.<br />
The assemblage recovered is rich and diverse and consists <strong>of</strong> 36 genera and 48 species<br />
<strong>of</strong> pollen-spores, besides some fungal and din<strong>of</strong>lagellate remains. In general,<br />
angiospermic pollen are the most dominant elements followed by pteridophytic spores.<br />
Several ecological floral communities were recognised in the assemblage, <strong>of</strong> which<br />
back-mangrove floral community along with din<strong>of</strong>lagellate cysts are important. The<br />
assemblages <strong>of</strong> the surface samples indicate Oligocene to Lower Miocene age, whereas<br />
the assemblage <strong>of</strong> the subsurface section at Quilon ranges from Eocene to Miocene.<br />
Visited Quilon, Varkala, Cannanore and Cochin areas to collect Tertiary rock<br />
samples for palynological studies.<br />
PROJECT 4<br />
Programme 4.1<br />
PHYTOPLANKTON BIOSTRATIGRAPHY OF MARINE<br />
SEDIMENTARIES OF INDIA<br />
Phytoplankton biostratigraphy <strong>of</strong> Cretaceous-Palaeogene<br />
sequences <strong>of</strong> South Shillong Plateau, Meghalaya with emphasis<br />
on time boundaries and palaeoceanography<br />
Rahul<br />
Garg<br />
Photodocumentation <strong>of</strong> some stratigraphically significant holococcoliths<br />
discovered across KIT Boundary was done. Besides, a manuscript on integrated<br />
phytoplankton stratigraphy across KIT Boundary at Um Sohryngkew, Meghalaya was<br />
prepared.<br />
Rahul Garg & Khowaja-Ateequzzaman<br />
Two draft manuscripts entitled "Stratigraphic significance <strong>of</strong> Late Palaeocene<br />
din<strong>of</strong>lagellate cyst assemblage from Lakadong Sandstone" and "Morphological and<br />
taxonomical studies on Late Maastrichtian-Early Danian din<strong>of</strong>lagellate cyst genus<br />
Disphaerogena from Khasi Hills" were prepared.<br />
Besides, scanning <strong>of</strong> slides to check din<strong>of</strong>lagellate cyst productivity <strong>of</strong> Late<br />
Cretaceous sequence <strong>of</strong> Mawsynram area was carried out. Type slides <strong>of</strong> Jain, Sah and<br />
Singh (1<strong>97</strong>9) from coeval Dawki sequence representing abundance <strong>of</strong> Dinogymllium<br />
species are being restudied.<br />
Programme 4.2 : Cretaceous phytoplankton biostratigraphy and<br />
palaeoceanographic set up <strong>of</strong> East Coast petroliferous ba·<br />
sins<br />
Khowaja-Ateequzzaman & Rahul Garg<br />
Compiled data on Cretaceous din<strong>of</strong>lagellate cyst bioevents in Cauvery Basin,<br />
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