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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BSIP<br />
volatile bituminous A rank.<br />
O.S. Sarate<br />
Programme 2.13<br />
Organic petrographic evaluation <strong>of</strong> coal seams from Talcher<br />
Coalfield<br />
Objeclive To assess coal characterisotion in Talcher Coalfield<br />
A detailed biodiagenetic study <strong>of</strong> coals from Bharatpur, South Belanda and Ananta<br />
quarries has indicated that vitrinite group <strong>of</strong> macerals ranges between 13.6 to 76.8'1",<br />
exinite 1.2 to 17.2%, inertinite 9.2 to 60.6% and mineral matter 4.0 to 57.8%. The relatively<br />
higher percentage <strong>of</strong> exinite contents characterizes the South Belal1da and Ananta<br />
coals.<br />
The general distribution pattern <strong>of</strong> macerals suggests the prevalence <strong>of</strong> reducing<br />
conditions. However, oxidizing and transitional phases were also present during the genesis<br />
<strong>of</strong> Talcher coals. Thus, four micropetrographic facies were identified, viz., vitric, fusovitric<br />
and vitro-fusic transitional/intermediate conditions. Study in fluorescence mode<br />
further indicates high incidence <strong>of</strong> Iiptinite group <strong>of</strong> macerals, perhydrous vitrinite and<br />
fluorescing inertinite in selected coals, imparting suitability for liquefaction. The presence <strong>of</strong><br />
pyro-fusinite and degrad<strong>of</strong>usinite is the characteristic feature <strong>of</strong> some coals. Well-preserved<br />
wood structures particularly middle lamella indicate the formation <strong>of</strong> ccrtain fusinites<br />
due to peat fire.<br />
A gcneral megascopic study (45 samples) <strong>of</strong> coals from Kalinga and Gopal Prasad<br />
areas indicates that the coal is rich in thick and persistent durain bands. Viuail1 bands are<br />
much less represented. Further work is in progress.<br />
Anand-Prakash,<br />
Rakesh Saxena & Jyotsana Rai<br />
Programme 2.14 Palynostratigraphy <strong>of</strong> recently explored subsurface Gondwana<br />
sequence in Tamil Nadu and Pondicherry (V.T.)<br />
Objeclive To establish palynological succession in Ihe subsurface<br />
Gondwana sedimenls. their palynodaling and correlation<br />
Samples from bore-hole PBS-l were processed for recovery <strong>of</strong> palyn<strong>of</strong>ossils. Scout<br />
anaJysis <strong>of</strong> palyn<strong>of</strong>lora from yielding samples was done. Important taxa were photographed.<br />
The study is in progress.<br />
R.S. Tiwari, Archana Tripathi & Vijaya<br />
Programme 2.15<br />
Objective<br />
Palynostratigraphy <strong>of</strong> Gondwana sequence in Tatapani<br />
Ramkola Coalfield, Madhya Pradesh<br />
To develop lilhostratigraphic set up from various surface and<br />
subswjace sequences<br />
To reconstruct slandard palynological succession, age delermina/ion<br />
and correlation wilh special reference 10 coal-bearing<br />
horizons<br />
To recognise range <strong>of</strong>slraligraphically significanl laxa m!d evo-<br />
<strong>96</strong>