Proceedings of XXIII Indian Colloquium on Micropaleontology and Stratigraphy and International Symposium on Global Bioevents in Earth’s History
Palaeocene to early Eocene Planktonic Foraminifera of the Pondicherry area, South India
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Published:January 01, 2013
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N. Malarkodi, Chingakham Usharani Devi, C.S. Bhargava Sharma, 2013. "Palaeocene to early Eocene Planktonic Foraminifera of the Pondicherry area, South India", Proceedings of XXIII Indian Colloquium on Micropaleontology and Stratigraphy and International Symposium on Global Bioevents in Earth’s History, N. Malarkodi, Gerta Keller, A. N. Reddy, B.C. Jaiprakash
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Abstract:
Planktonic foraminifera from several outcrops and sections in the Pondicherry area, South India, were analyzed to determine their age. Preliminary analysis of the samples collected from various outcrops and sections of Pondicherry area yielded abundant well preserved planktonic foraminifera belonging to Globoanomolina, Parasubbotina, Subbotina Praemurica, Igorina, Acarinina, Morozovella, Pseudohastigerina and Astrorotalia occurring in part of the sequence in association with abundant Discocyclinids. Fifty-two planktonic foraminiferal species of these genera are recorded from and interval spanning from the early Palaeocene zone P1b to the early Eocene zone P9. The stratigraphic distribution of the planktonic foraminifera from these samples do not allow identification of individual biozones, undifferentiated zone intervals can be recognized, including P1b-P2, P3a-P5 and P6-P9. Species are illustrated based on SEM microphotographs. More detailed biostratigraphic work is needed and will be carried out to identify individual zones and determine the completeness of the sections.