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

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Magnetic Susceptibility Study of Late Maastrichtian Sediments of Ariyalur Group of Tiruchirapalli Cretaceous, Tamil Nadu


Affiliations
1 Department of Geology, School of Earth and Atmospheric sciences, University of Madras. Gundy Campus, Chennai 600025, India
2 Geological lnstitute, University of Copenhagen, Oster Volgade 10, Copenhagen, Denmark
     

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The present study reports the magnetic susceptibility study of Late Maastrichtian sediments (Kallamedu Formation) of Anyalur Group The Nimyur section exhibits two types of susceptIbility pattern Ie C-zero and C4 The susceptibility pattern of this sectIon fits well with the patterns observed In the mterval of Upper Cretaceous part of the reversed interval (29R) The K/T boundary has been fixed above the C-zero peak 10 most of the studied sections around the world We suggest that the K/T boundary should be placed above the Nimyur section, based on the characteristicc magnetic susceptibility pattern.

Keywords

Magnetic susceptibility, Late Maastrichtian, Kallamedu Formation, Anyalur Group, Tamil Nadu.
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  • Magnetic Susceptibility Study of Late Maastrichtian Sediments of Ariyalur Group of Tiruchirapalli Cretaceous, Tamil Nadu

Abstract Views: 163  |  PDF Views: 2

Authors

J. Madhavaraju
Department of Geology, School of Earth and Atmospheric sciences, University of Madras. Gundy Campus, Chennai 600025, India
H. J. Hansen
Geological lnstitute, University of Copenhagen, Oster Volgade 10, Copenhagen, Denmark
S. Ramasamy
Department of Geology, School of Earth and Atmospheric sciences, University of Madras. Gundy Campus, Chennai 600025, India
S. P. Mohan
Department of Geology, School of Earth and Atmospheric sciences, University of Madras. Gundy Campus, Chennai 600025, India

Abstract


The present study reports the magnetic susceptibility study of Late Maastrichtian sediments (Kallamedu Formation) of Anyalur Group The Nimyur section exhibits two types of susceptIbility pattern Ie C-zero and C4 The susceptibility pattern of this sectIon fits well with the patterns observed In the mterval of Upper Cretaceous part of the reversed interval (29R) The K/T boundary has been fixed above the C-zero peak 10 most of the studied sections around the world We suggest that the K/T boundary should be placed above the Nimyur section, based on the characteristicc magnetic susceptibility pattern.

Keywords


Magnetic susceptibility, Late Maastrichtian, Kallamedu Formation, Anyalur Group, Tamil Nadu.