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

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Calcareous Nannofossils Across the K/T Boundary and the Age of the Deccan Trap Volcanism in Southern India


Affiliations
1 Geological Institute ETHZ, 8092 Zurich, Switzerland
2 Palynology Laboratory, KDM Institute of Petroleum Exploration, ONGC, Dehra Dun-248 195, India
     

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The distribution of calcareous nannofossils across the Cretaceous/Tertiary (K/f) boundary in well PLK-A in the Krishna-Godavari Basin of Southern India has been studied in the interval including sediments above, within and below the Deccan traps. With Micula murus present and M. prinsii missing, the presence of upper, but not uppermost Maastrichtian can be shown. The K/T boundary lies above trap flow 2 and the traps are overlain by sediments of the lower part of NP 3 (Danian). The span of volcanism has here probably lasted not more than 4 Ma.

Keywords

Cretaceous-Tertiary boundary, Deccan Volcanism, Krishna-Godavari Basin, Andhra Pradesh.
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  • Calcareous Nannofossils Across the K/T Boundary and the Age of the Deccan Trap Volcanism in Southern India

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Authors

Katharina V. Salis
Geological Institute ETHZ, 8092 Zurich, Switzerland
R. K. Saxena
Palynology Laboratory, KDM Institute of Petroleum Exploration, ONGC, Dehra Dun-248 195, India

Abstract


The distribution of calcareous nannofossils across the Cretaceous/Tertiary (K/f) boundary in well PLK-A in the Krishna-Godavari Basin of Southern India has been studied in the interval including sediments above, within and below the Deccan traps. With Micula murus present and M. prinsii missing, the presence of upper, but not uppermost Maastrichtian can be shown. The K/T boundary lies above trap flow 2 and the traps are overlain by sediments of the lower part of NP 3 (Danian). The span of volcanism has here probably lasted not more than 4 Ma.

Keywords


Cretaceous-Tertiary boundary, Deccan Volcanism, Krishna-Godavari Basin, Andhra Pradesh.