1995-96 - Birbal Sahni Institute of Palaeobotany
1995-96 - Birbal Sahni Institute of Palaeobotany
1995-96 - Birbal Sahni Institute of Palaeobotany
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<strong>1995</strong>-<strong>96</strong><br />
lutionary trendl' <strong>of</strong> various palyn<strong>of</strong>loras<br />
7b demarcate time boundaries with special reference to PITr<br />
boundary<br />
To document phytogeographic and palaeoenvironmental<br />
events<br />
Field work was carried out in Tatapani-Ramkola Coalfield with main emphasis on<br />
section measurements along different outcrops, preparation <strong>of</strong> Iitholog and photography.<br />
Preparation <strong>of</strong> geological sections based on field study has been complctcd.<br />
Palynological studies <strong>of</strong> surface samples (TRS 16 OW & TRAG) from Barren<br />
Measurcs - Raniganj Fonnation (GSI) have been completed. Howevcr, in TRS 16 OW the<br />
palynoassemblage compares with the Faunipollenifes varius asscmblage zone representing<br />
Upper Barakar; while in TRAG the samples show a dominance <strong>of</strong> striate disaccates<br />
and arc comparable to the Striatites-Striasulcites assemblage zone representing Raniganj<br />
Palynozone.<br />
Bore-core <strong>of</strong> TRDM-l and surface samples (TRDMS) from a nala cutting nearby<br />
were macerated for possible Barren Measures palyn<strong>of</strong>lora. However, all palynomorphs<br />
were found to be charred due to dolerite intrusion.<br />
Penno-Triassic boundary has been demarcated across 2 sections: Ledho nala and<br />
Iria nala. In Ledho nala, Panchet palynozone is marked by the presence <strong>of</strong> Brachysaccus,<br />
Playfordiaspora, Goubinispora, Guttatisporifes, Falcisporiles, Lunatisporites while<br />
Raniganj sediments show a dominance <strong>of</strong> striate disaccates and are comparable to<br />
Fallnipollenites-Striatites-Striatopodocarpiles assembrnge zone. In !ria Nala Raniganj<br />
Panchct transition has been marked by Densipollenites magnicorpus assemblage zone<br />
and Klausipollenites asscmblage zone respectively. A palynological rcport has been<br />
prepared and sent to Coal Wing, Geological Survey <strong>of</strong> India.<br />
Palynological studies <strong>of</strong>8 surface samples from tlus coalfield, sent by M.E.C.L.,<br />
Ranchi, was completed. All the yielding samples showed a dominance <strong>of</strong> striate disaccates<br />
and are comparable to the Faunipolleniles-Striatites-Striatopodocarpites assemblage zone<br />
representing Raniganj palynozone. Palynological report on ti,e study has been submitted.<br />
Suresh C. Srivastava & Ratan Kar<br />
Programme 2.16 Palynological investigation <strong>of</strong> coal-bearing sequence in<br />
Deocha-Pachami area <strong>of</strong> Birbhum District, West Bengal<br />
Objective To study the morphological diversity <strong>of</strong> spores and pollen<br />
To find out palynostratigraphic relationships between the coalbearing<br />
and associated strata from various sectors <strong>of</strong> this newly<br />
established coal sub-basin and to compare them with corre<br />
.Iponding strata <strong>of</strong> other coal basins in India<br />
Microscopic observation between the depth <strong>of</strong> 100 to 102 m in bore-hole OPD-IS<br />
reveals occurrence <strong>of</strong> Aeqllilriradites, Janlla.lporites, Leptolepidites, and prominence <strong>of</strong><br />
97
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