1996-97 - Birbal Sahni Institute of Palaeobotany

1996-97 - Birbal Sahni Institute of Palaeobotany 1996-97 - Birbal Sahni Institute of Palaeobotany

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BSIP Transverse section of a fossil wood, Megaporoxylon maheshwarij sp. nav., from Garu Formation. Arunachal Pradesh showing spiral to scalariform thickenings in primary xylem. exposed in Arunachal Pradesh has been described. The wood is characterised by the presence of distinct growth zones, endarch primary xylem and a single, large, circular or oval, irregularly oriented pits in the cross-field. These features are diagnostic of the genus Megaporoxylon. As the wood does not match with any of the known species of the genus, it is named as Megaporoxylon maheshwarii sp. novo 54

1996-97 Sponsored Projects S.P. I Holocene palynostratigraphy and palynoenviron-ment of Chilka Lake: An inter-disciplinary approach (DST NO. ES/44/019/90) H.P. Gupta & Deepak Kohli The project accomplished and the project report has been submitted to DST, New Delhi. S.P. II Palaeogene floral diversity-biostratigraphy and palaeoenvironmental implications (DST NO. ES/44/037/93) K. Ambwani (Co-investigator) A detailed report was compiled and submitted to the Department of Science and Technology, New Delhi. S.P. III Reconstruction of past climatic changes in eastern Himalayan region using tree-ring data (DST No. ES/44/018/90) A. Bhattacharyya, R.R. Yadav & Vandana Chaudhary Tree-ring samples of Abies densa, Tsuga dumasa, Larix griffithii, Pinus waLLichiana, Pill us raxburghii and JUlliperus sp. collected from Arunachal Pradesh have been processed. Tree-ring sequences of these samples have been dated to the accuracy of calendar year and measured. From the ring-width measurements, chronology of Larix griffithii has been found to be of excellent potential for climatic studies. Climatic reconstruction using this chronology is in progress. A. Bhattacharyya & Vandana Chaudhary Visited Tawang, Lungroba, Bomdila, Dirang and other sites in Arunachal Pradesh and collected tree-ring samples of Abies densa, Tsuga dumasa, Larix griffithii, Pillus wallichialla, Pinus roxburghii and Juniperus sp. S.P. IV Palaeo biological investigations across Archaeozoic-Early Proterozoic transition (DST NO. ESS/CA/A4-09/93) P.K. Maithy, R. Babu, S. Kumar (L.U.) & S. Sharma Further field observations were done on the Iron Ore Group exposed in Barbil - Noamundi area about ± 10 km east of Barbil, Orissa. About 107 m thick dolomite 55

<strong>1996</strong>-<strong>97</strong><br />

Sponsored Projects<br />

S.P. I<br />

Holocene palynostratigraphy and palynoenviron-ment <strong>of</strong><br />

Chilka Lake: An inter-disciplinary approach (DST NO.<br />

ES/44/019/90)<br />

H.P. Gupta & Deepak Kohli<br />

The project accomplished and the project report has been submitted to DST,<br />

New Delhi.<br />

S.P. II<br />

Palaeogene floral diversity-biostratigraphy and<br />

palaeoenvironmental implications (DST NO. ES/44/037/93)<br />

K. Ambwani (Co-investigator)<br />

A detailed report was compiled and submitted to the Department <strong>of</strong> Science<br />

and Technology, New Delhi.<br />

S.P. III<br />

Reconstruction <strong>of</strong> past climatic changes in eastern Himalayan<br />

region using tree-ring data (DST No. ES/44/018/90)<br />

A. Bhattacharyya, R.R. Yadav & Vandana Chaudhary<br />

Tree-ring samples <strong>of</strong> Abies densa, Tsuga dumasa, Larix griffithii, Pinus<br />

waLLichiana, Pill us raxburghii and JUlliperus sp. collected from Arunachal Pradesh<br />

have been processed. Tree-ring sequences <strong>of</strong> these samples have been dated to the<br />

accuracy <strong>of</strong> calendar year and measured. From the ring-width measurements, chronology<br />

<strong>of</strong> Larix griffithii has been found to be <strong>of</strong> excellent potential for climatic studies. Climatic<br />

reconstruction using this chronology is in progress.<br />

A. Bhattacharyya & Vandana Chaudhary<br />

Visited Tawang, Lungroba, Bomdila, Dirang and other sites in Arunachal<br />

Pradesh and collected tree-ring samples <strong>of</strong> Abies densa, Tsuga dumasa, Larix griffithii,<br />

Pillus wallichialla, Pinus roxburghii and Juniperus sp.<br />

S.P. IV<br />

Palaeo biological investigations across Archaeozoic-Early<br />

Proterozoic transition (DST NO. ESS/CA/A4-09/93)<br />

P.K. Maithy, R. Babu, S. Kumar (L.U.) & S. Sharma<br />

Further field observations were done on the Iron Ore Group exposed in Barbil<br />

- Noamundi area about ± 10 km east <strong>of</strong> Barbil, Orissa. About 107 m thick dolomite<br />

55

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