1991-92 - Birbal Sahni Institute of Palaeobotany
1991-92 - Birbal Sahni Institute of Palaeobotany
1991-92 - Birbal Sahni Institute of Palaeobotany
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<strong>1991</strong>-<strong>92</strong>: To find out relationship <strong>of</strong> the Neyveli Formationwith other lignite-bearing formations: To trace lateral continuity <strong>of</strong> the biozones establishedin Jayamkondacholapuram area: To deduce palaeoclimate and environment <strong>of</strong> de·position: To solve the controversy regarding the age <strong>of</strong> theNeyveli ligniteMorphotaxonomic study <strong>of</strong> the palyn<strong>of</strong>lora obtained from the Neyveli Mine·Iis being carried out. The assemblage consists <strong>of</strong>26 per cent <strong>of</strong> pteridophytic spores,64 per cent <strong>of</strong> angiospermous pollen and 10 per cent <strong>of</strong> fungal remains. Theassemblage is correIa table to the upper zone <strong>of</strong> the Neyveli Formation, viz.,Trilatiporites sellingii Cenozone <strong>of</strong> Jayamkondacholapuram area.R.K. SaxenaProgramme 3.8Objective: Organic petrological study <strong>of</strong> Rajasthan lignites: To carry out petrological evaluation <strong>of</strong> Rajasthanlignites: To prepare basinal models showing deposition' <strong>of</strong>lignite beds and their coalification trendsThe proposed work in the project could not be undertaken.Anand-Prakash and R. SaxenaProgramme 3.9Objective: Organic petrology <strong>of</strong> Kutch lignites, Gujarat: To evaluate Panandhro lignite for various industrialuses: To understand genesis <strong>of</strong> lignite and palaeoenvironmentalconditionsThe lignite <strong>of</strong> Panandhro lignitefield is compact and massive in nature andamorphous in texture. It is brown to dark brown in colour and sparingly banded inappearance. Granules, specks and lenses ( 1 mm to 5 cm in size) <strong>of</strong> yellow andviolet-red coloured resins are present as persistent or impersistent bands throughoutthe seams. Each resin-rich band varies in thickness from 3 cm to over 7 cm andoccurs generally at the intervals <strong>of</strong> 15 to 40 cm in the lignite seam and also in theshaly lignite, lignitic shale and lignitic clay beds. Occasionally, the bands may beover 1 m apart. The resins are also dispersed randomly throughout the seam. S<strong>of</strong>ar, no other coal or lignite seam is known [rom India which contains this much <strong>of</strong>resin concentration.G.K.B. Navale, B.K. Misra and Alpana SinghPROJECT 4: PHYTOPLANKTON BIOSTRATIGRAPHY OF25
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