1994-95 - Birbal Sahni Institute of Palaeobotany

1994-95
Programme 2.15
Palynostratigraphy of Gondwana sequence in Tatapani­
Ramkola Coalfield, Madhya Pradesh
Objective
To develop lithostratigraphic
subsurface sequences
set up from various surface and
To reconstmct standard palynological succession, age determination
and correlation with special reference to coal-bearing
horizons
To recognise range of stratigraphically significant taxa and
evolutionary trends of various palynofloras
To demarcate time boundaries
bow,dQlY
with special reference to PITr
To document phytogeographic and palaeoenvironmelllal events
Quantitative palynological invcstigations of bore-holes TRP-6. TRM-l. TRM-2
and TRS-12. have been completed. Bore-hole TRP-6 contains Talchir palynoOora
(Parasaccites-Plicatipollenites assemblage) at the base and is succeeded by Lower Karharbari
palynollora (CallulI/ispora-Jayantisporites assemblage) in the younger part of the Qorecore.
Three palynoassemblage zones have been demarcated in bore-hole TRM- I. The
oldest assemblage is represenled by Scheuringipollenites barakarensis assemblage zone
(Lower Barakar) and is succeeded by the dominance of striate bisaccate pollen. chieOy
Striatopodocarpites, Hindipollenites, Verticipollenites, Faunipollenites. Striatites. ell'. representing
Upper Barakar. The youngest assemblage is represented by Densipollenites indicus
and Densipollenites invisus in association with striate bisaccate pollen representing Kulli
pal ynozone.
In bore-holes TRM-2 and TRS-12. the palynoassemblages compare with the
Scheuringipollenites barakarensis assemblage zone representing Lower Barakar. The palynological
rep0l1s of these bore-holes have been sent to the Coal Wing. Geological Survey
of India.
Processing of samples collected from surface exposures is continued. Sediments
from Uro Naja have yielded rich Talchir palynoOora dominated by radial monosaccates
(Plicatipollenites-Parasaccites assemblage). Carbonaceous shale and coal samples from
Banki River section have yielded Late Permian (Raniganj) palynoOora. having a dominance
of striate bisaeeates.
Suresh C. Srivastava & Ratan Kar
Programme 2.16 Palynological investigation of coal-bearing sequence in
Deocha-Pachami area of Birbhum District, West Bengal
93