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

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Late Miocene-Early Pliocene Discoaster from Neill Island, South Andaman


Affiliations
1 Institute of Petroleum Exploration, Oil & Natural Gas Commission, Dehra Dun, India
2 Department of Geology, University of Lucknow, Lucknow, India
     

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The Eastern Coast Mudstone, exposed in Neill island, has yielded a rich assemblage of Late Miocene-Early Pliocene nannoplankton represented by the genera: Discoaster Tan Sin Hok, 1927 and Coccolithus Schwarz, 1894. The genus Discoaster constitutes about ninety-eight per cent of the assemblage and is represented by seventeen species including four new species and two new subspecies. A biostratigraphic zone named as Discoaster brouweri-Discoaster variabilis Assemblage-zone is recognized and correlated.
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  • Late Miocene-Early Pliocene Discoaster from Neill Island, South Andaman

Abstract Views: 201  |  PDF Views: 2

Authors

Pratap Singh
Institute of Petroleum Exploration, Oil & Natural Gas Commission, Dehra Dun, India
K. P. Vimal
Department of Geology, University of Lucknow, Lucknow, India

Abstract


The Eastern Coast Mudstone, exposed in Neill island, has yielded a rich assemblage of Late Miocene-Early Pliocene nannoplankton represented by the genera: Discoaster Tan Sin Hok, 1927 and Coccolithus Schwarz, 1894. The genus Discoaster constitutes about ninety-eight per cent of the assemblage and is represented by seventeen species including four new species and two new subspecies. A biostratigraphic zone named as Discoaster brouweri-Discoaster variabilis Assemblage-zone is recognized and correlated.