Sporological Correlations of Coal Seams in Saunda and Gidi Areas of South Karanpura Coalfield, Bihar, India

Abstract

Sixty-seven coal samples out of six bore-holes in the Saunda and Gidi areas of South Karanpura Coalfield, Bihar, have been palynologically investigated. The various forms of dispersed spores and pollen grains are assigned to forty-three genera. On the basis of generic percentage frequency and their distribution, nine miospore genera have been considered representing the dominant association. They are Leiotriletes, Lopltotriletes, Horriditriletes, Microbaculispora, Cyclobaculisporites, Striatopodocarpites, Faunipollenites, Vesicaspora and Sulcatisporites. Along with them two rare genera Indotriradites and Dentatispora are also included due to their characteristic distribution. On the basis of qualitative and quantitative miofloristic values, the samples fall in to 3 major coal seams out of which one is met with only in two boreholes representing the youngest deposition, second is represented in all the bore-holes, and the seam occupying the position of oldest deposition is struck in five of the six bore-holes and is variously split. Apart from this, there are two samples which stand apart and are supposed to be of local importance.