1994-95 - Birbal Sahni Institute of Palaeobotany
1994-95 - Birbal Sahni Institute of Palaeobotany
1994-95 - Birbal Sahni Institute of Palaeobotany
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BSIP<br />
Pollen analysed five soil samples received from Indira Gandhi National Center for<br />
ll1e Arts, Janpath, New Delhi (Consultancy Service). The studies indicated tropical moist<br />
environment wherein Madhuca indica and Azadirachta indica colonised forming a forest.<br />
H.P. Gupta & S. K. Bera<br />
A pollcn diagram from 1.5 m deep pr<strong>of</strong>ile from Andaman and Nicobar Islands<br />
dated back to 20,000 yrs B.P. was prepared. Three broad vegetational phascs have been<br />
recognised depicting shifts in vegctation, viz., brackish water Heriliera forest-salt marshes<br />
- brackish watcr Heriliera forest.<br />
Asha Khandelwal & H.P. Gupta<br />
Pollen analysis <strong>of</strong> a one metrc deep soil pr<strong>of</strong>ilc from Sithikhar Swamp, Spiti Valley,<br />
Himachal Pradesh has revealed that around 2,500 years B.P. lhis region had alpine<br />
scrub vegetation, chiefly constituted by grasses, sedges, Asteraceae together wi111Junipems,<br />
Ephedra, Betula, etc. The overall vegetational assemblage reflects ll1e prevalcnce <strong>of</strong> cold<br />
and dry climatc in the region. Around 1,900 years B.P. the decline in ll1e number and<br />
frequencies <strong>of</strong> most <strong>of</strong> ll1eplant taxa indicates the detcrioration <strong>of</strong> climate.<br />
Pollcn analysis <strong>of</strong> 4 samples cach from a 2 meter deep Takchc Trench (ST-I) and<br />
Takche Calcareous Tuffa (TCT) from Spiti Valley, Himachal Pradesh was carTied out. All<br />
the samples wcre palynologically barTcn, except stray pollen <strong>of</strong> grasses, sedges and Pinus.<br />
M.S. Chauhan & Chhaya Sharma<br />
A report on pollen content <strong>of</strong> various surface samples in relation to the vegetation<br />
at Ookriani Glacier, Uttar'kashi was prepar'ed and submitted to OST's Annual Rcport.<br />
S.K. Bera<br />
A manuscript on "Trilatiporate pollen from Indian Palaeogene and Neogene sequences<br />
: Evolution, migration and continental drift" was finalized.<br />
B.K. Misra & Alpana Singh [& C.G.K. Ramanujam,<br />
Hyderabad]<br />
Compiled maceral data <strong>of</strong> cel1ain Lower Gondwana coals from Son. Oamodar,<br />
Rajmahal, Pench-Kanhan and Godavar'i basins under fluoresccncc mode for highlighting<br />
the application <strong>of</strong> biopetrological mcll10ds in ascertaining Il1csuitability <strong>of</strong> coal seams for<br />
their liquefaction potential. Also collected relevant details about their chemical nature.<br />
B.K. Misra & B.D. Singh<br />
Consultcd literature per1aining to the geology or coal and lignite and madc index<br />
car·ds. Got aquainted with ll1esampic prcparation tcchniques and made few particulate lignite<br />
pellcts li'om Panandtu·o and Kapurdi lignitefields. Lear'ned ll1e procedures relating to<br />
identi fication <strong>of</strong> macerals and microlithotypes and determination <strong>of</strong> coal rank by reflectivity<br />
measurement,.<br />
132<br />
Shinjini Sar'ana
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