1996-97 - Birbal Sahni Institute of Palaeobotany

BSIP
sequence is well exposed at Kashia Mine. The dolomite sequence is seen as a lenticular
body within Iron Ore Group. This lithostratigraphic unit is named as the Kashia Dolomite
with a rank of Formation after the name of the mine where it is best exposed. It is
dominantly represented by dolomite with subordinate shale. Its lower contact is sharp
with overlying areno-argillaceous unit. The areno-argillaceous unit is conformably
overlain by banded hematite-jasper horizon containing iron and manganese ores.
The Kashia Dolomite is subdivided into six lithostratigraphic members referred
as A, B, C, D, E and F. The lowermost Member A is 30 m thick lithounit made up of
grey to greyish-black silicified dolomites. Member B is the most characteristic horizon
made up of greyish-black chert and red shales and is 2-4 m thick. Both upper and lower
contacts of this unit are sharp. Member C is represented by ca 5 m thick dolomite with
papery thin whitish-grey shales. A few horizons show development of cyanobacterial
mat. Member D is 6 m thick grey to greyish white shale horizon with subordinate
violet coloured dolomite. It shows gradational contact with the overlying members.
Member E is 12 m thick, light grey to greyish-black dolomite, which shows development
of Conophyton. The youngest horizon of Kashia Dolomite is the Member F which is
made up of a grey to greyish-black dolomite with minor shale partings. Cyanobacterial
mat horizons are quite common. Member F also shows presence of sandstone dyke.
Sedimentary structures are well preserved. On the basis of sedimentary structures
the environment of deposition of Kashia Dolomite can be suggested as inter-tidal to
subtidal region of a lagoon.
To study biological remains thin sections of chert were prepared. Rich organicwalled
microfossils composed of spheroidal cells are preserved as algal mat. Many of
the specimens in mat show distinct vegetative reproduction by means of binary fission.
Two distinct types of filamentous forms are identified. Stromatolites were studied in
thin sections by obtaining three dimensional diagram. The stromatolites are small in
sIze.
S.P. V
Aeroallergens and human health: An aero-biological study
(Ministry of Environment & Forest No. 42114/94-RE
dt. 30.03.94)
Asha Khandelwal, Rashmi Tewary, Deepak Kohli, Shantanu Chatterjee, Alka
Srivastava & Lily Misra
Three samplers - Burkard, Andersen and Rotorod were employed for
aeropalynological surveys at different places in Lucknow as follows:
1. Rotorod samples:
S6
(A) Continuous sampling (October 1996 - March 1997)
Rotorod samples from Kursi Road exhibited 18 types of pollen grains and
24 types of fungal spores.
(B) Spot sampling (October 1996 - March 1997)