Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

G. K. B. Navale ¹, R. S. Tiwari ¹

Affiliations
1 Department of Coal, Birbal Sahni Institute of Palaeobotany, Lucknow, IN

Abstract

Microscopic examination of polished pellets of Churcha coals reveals the nature of microfragmental constituents comprising mostly Durains. Petrological analysis has been made so as to assess the nature and distribution of different microconstituents. The miospore assemblage in this seam is a diversified one, consisting of 36 genera of triletes, monoletes, monosaccates, disaccates and others. The percentage frequencies of various genera have been determined. Petro-palynological constituents of this coal have been compared with those of other comparable beds in the Lower Gondwana of India.

Full Text

     

R. S. Tiwari ¹, Vijaya ¹, Archana Tripathi ¹

Affiliations
1 Birbal Sahni Institute of Palaeobotany, Lucknow-226 007, IN

Abstract

The palynoflora of subsurface coal-bearing sequence in cores from boreholes TC-1 and TC-2 in Kandmanglam and Marakkanam area, Tamil Nadu and Pondicherry Union Territory has been found to be rich in pteridophytic spores. The palyno-assemblage is assignable to the Coptosporo cauveriana Zone of Aptian age. The findings add to our knowledge of Gondwana coal deposits along the east coast of India.

Keywords

Palynostratigraphy, Gondwana, Tamil Nadu and Pondicherry.

Full Text