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

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Orbulina universa d' Orbigny in Late Pleistocene Sediments of Northern Indian Ocean


Affiliations
1 Palaeontology Laboratory, KDM Institute of Petroleum Exploration, ONGC, Dehra Dun 248 195, India
     

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The genus Orbulina d' Orbigny 1839 in the Late Pleistocene sediments of the Northern Indian Ocean is represented by abundant population of O. universa d' Orbigny 1839 and rare O. bilobara d' Orbigny 1846. Temporal variation in the abundance and test size or O. universa has been analysed for their inter-relationship and paleoclimatological implications. The results suggest an inverse relationship between abundance and test growth which corroborates Allan Be's (1973) observations on Recent O. universa from Indian Ocean.

Keywords

Palaeontology, Foraminifera, Pleistocene, Indian Ocean.
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  • Orbulina universa d' Orbigny in Late Pleistocene Sediments of Northern Indian Ocean

Abstract Views: 226  |  PDF Views: 1

Authors

B. C. Jaiprakash
Palaeontology Laboratory, KDM Institute of Petroleum Exploration, ONGC, Dehra Dun 248 195, India

Abstract


The genus Orbulina d' Orbigny 1839 in the Late Pleistocene sediments of the Northern Indian Ocean is represented by abundant population of O. universa d' Orbigny 1839 and rare O. bilobara d' Orbigny 1846. Temporal variation in the abundance and test size or O. universa has been analysed for their inter-relationship and paleoclimatological implications. The results suggest an inverse relationship between abundance and test growth which corroborates Allan Be's (1973) observations on Recent O. universa from Indian Ocean.

Keywords


Palaeontology, Foraminifera, Pleistocene, Indian Ocean.