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

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Mesozoic-Cainozoic Boundary in Assam


Affiliations
1 Wadia Institute of Himalayan Geology, Dehradun, India
2 Birbal Sahni Institute of Palaeobotany, Lucknow, India
     

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The vertical distribution of significant phytoplankton, spore-pollen and foraminiferal guide fossils are detailed with special reference to palyno-stratigraphic investigations in the South Shillong Plateau. The diagnostic features of the Maestrichtian-Danian-Palaeocene intervals are summarised. Biostratigraphic evidences favour the placing of the Mesozoic-Cainozoic boundary between the Mahadeo Formation (Maestrichtian) and the overlying Langpar Formation (Danian).
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  • Mesozoic-Cainozoic Boundary in Assam

Abstract Views: 165  |  PDF Views: 2

Authors

S. C. D. Sah
Wadia Institute of Himalayan Geology, Dehradun, India
R. Y. Singh
Birbal Sahni Institute of Palaeobotany, Lucknow, India

Abstract


The vertical distribution of significant phytoplankton, spore-pollen and foraminiferal guide fossils are detailed with special reference to palyno-stratigraphic investigations in the South Shillong Plateau. The diagnostic features of the Maestrichtian-Danian-Palaeocene intervals are summarised. Biostratigraphic evidences favour the placing of the Mesozoic-Cainozoic boundary between the Mahadeo Formation (Maestrichtian) and the overlying Langpar Formation (Danian).