Annual Report 2011-2012 - Birbal Sahni Institute of Palaeobotany

EBIRBAL SAHNI INSTITUT
Annual Report 2011-2012
1946
OF PALAEOBOTANY
Project 3.2:
Palynostratigraphy of Late Palaeozoic and Mesozoic sequence in Singrauli and Tatapani-
Ramkola coalfields and adjacent areas in Madhya Pradesh
Compiled the palynological data generated from
coal-bearing horizons encountered in different bore-holes
of the Singrauli and Tatapani-Ramkola coalfields, as per
MoU between BSIP and GSI (Coal Wing).
Vijaya (superannuated w.e.f. 30.09.2011) & Archana Tripathi
(superannuated w.e.f. 31.07.2009)
Project 3.3:
Palynostratigraphy and palaeoclimatic studies on Gondwana sediments of Sohagpur
and Mand Raigarh coalfields
Quantitative analysis palynoflora
recovered from strata between 6.60 to 514.06
m encountered in bore-hole JNN-1 (Parsora
Formation) has revealed the dominance of
non-striate bisaccate pollen– Minutosaccus,
Falcisporites, Klausipollenites,
Satsangisaccites and Alisporites in
association with Lundbladispora,
Kraeuselisporites, Densoisporites,
Brachysaccus, Staurosaccites and
Lunatisporites. Two palynozones have been
identified in the above sequence.
Enzonalasporites ignacii-Minutosaccus
crenulatus zone (391-399.5 m) and
Rimaesporites potoniei-Samaropollenites specious
zone (309.7-324.15 m) suggesting Late Triassic age of
the strata. Two manuscripts have been finalized on the
aspects. Additionally, undertook field work for the
Late Triassic palynoflora recovered from Parsora Formation.
collection of outcrop samples from Sohagpur and Umaria
coalfields (MP). Plant fossils have also been collected
from Umaria Coalfield.
Ram Awatar
Project 3.4:
Morphotaxonomy, floristics evolution, biostratigraphy and palaeoenvironmental studies
of Ib-River Coalfield (Odisha)
The surface and subsurface samples collected from
the Belpahar area, Kuraloi block: A (Jharsuguda district)
has been thoroughly studied to understand the composition
of the palynomorphs to assign its age. The two
palynoassemblages have been recorded from the surface
samples of Lilahari nala section, Belpahar area. The
Palynoassemblage- I resulted with the dominance of
Faunipollenites and sub dominance of
Scheuringipollenites in the presence of Rhizomaspora,
Verticipollenites, Striapollenites, Cyclogranisporites
and Ephedripites, etc.; suggesting resemblance with
Upper Barakar palynoflora of late Early Permian age.
Palynoassemblage- II marked with dominance of
Striatopodocarpites and subdominance of
Faunipollenites in the presence of Rhizomaspora,
Verticipollenites, Striapollenites, Cyclogranisporites,
Ephedripites, Distriates, Distrimonosaccites,
Microbaculispora, Parasaccites, Callumispora, D.
magnicarpus, etc., and the appearance of
Arcuatipollenites, Densoisporites, Lundbladispora,
Densisporites, D. magnicarpes shows the younger
affinities equal to Upper Raniganj palynoflora (early Late
Permian age) (worked jointly with SSK Pillai). Triassic
palynoassemblage has been reported for the first time
from the samples of bore-hole IBKAN-2. This
palynoassemblage consisted of Kamthisaccites
kamtheinsis, Goubinispora indica, Indospora, etc.
shows the affinity of middle Triassic palynoflora indicating
the late Late Permian age. Additionally, collected more
surface and sub-surface samples from the coalfield for
the palynological studies.
K.L. Meena
www.bsip.res.in
13