AR 1978-79.pdf - Birbal Sahni Institute of Palaeobotany

20
samples including anthracite background, Radiocarbon
standard preparation (35) and sediment ,am pIes for which
carbon content was determined but could not be dated due
to lack of enough organic carbon. Nearly hair the number
of samples dated relate to various research projects of the
Quaternary Palynology Department of the rnstitute.
The Laboratory has also dated 28 samples pertaining
to geological, geophysical and archaeological investigations
sent from G. S. I.; N. r. 0., Goa; Deccan College, Punc, and
other Institutions in the country. Dredge corc samples
collected by R. V. Gaveshani in a collaborative work with
the G. S. 1. and X 1. O. have been dated. The samples of
coral reef formations along Minicay Island coasts have also
been dated.
6.2. Fission track dating progranune
The equipments for sample mounting, grinding and
polishing have been set up. Etching and counting of track
have been standardized, using apatite crystals as specimens.
Thus the preliminary work on the fission track dating method
has been started.
PAPERS
PUBLISHED
Banerji, J., Kumaran, K. P. :"J'. & Maheshwari, H. K.
(1978). L"pper Triassic sporae dispersae from the
Tiki Formation-I. Megaspores from the Janar Nala
Section, South Rewa Gondwana Basin. Palaeobotanist,
25: 1-26.
Barale, G., Bassoullet, J. P. & Bose, M N. (1978). On a
coIIection of Mesozoic plants from Kagbeni-Muktinath,
Thakkhola Valley, Nepal. Po/atototonist, 25:
32-38.