Permian-Triassic miofloras from the Raniganj coalfield, India

Authors

  • D.C. Bharadwaj Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India
  • R.S. Tiwari Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India

DOI:

https://doi.org/10.54991/jop.1975.971

Abstract

Core samples from the Bore hole NCRD-6 in Dishergarh-Asansol Region, Raniganj Coalfield have been palynologically analysed. The sporae dispersae have been assigned to 35 genera and 43 species, out of which 12 species are new. Statistical analysis of these samples suggests a 3-zone miofloral succession. The oldest zone is dominated by the striate-disaccates and corresponds to the mioflora of the Raniganj Stage (Upper Permian); the youngest zone is characterized by the decline of the striate forms alongwith the prominent incoming of new trilete organizations in the Panchet (Lower Triassic); the middle zone contains a mixed mioflora representing a transition between the youngest and the oldest. It has been concluded that as compared to the Upper Permian, the palynoflora changes in the Lower Triassic where the striate-disaccates appreciably decline and the triletes prominently take their place; the transitional palynoflora shows mixed elements. Comparison with the contemporary miofloral sequence from Ondal area of Raniganj Coalfield has revealed that the middle and upper zones encountered in NCRD-6 are absent there, substantiating thereby a sedimentological break between the Raniganj and Panchet formations in that area.

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Published

1975-12-31

How to Cite

Bharadwaj, D., & Tiwari, R. (1975). Permian-Triassic miofloras from the Raniganj coalfield, India. Journal of Palaeosciences, 24(1-3), 26–49. https://doi.org/10.54991/jop.1975.971

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