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

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Foraminiferal Evidence for Sediments of Santonian Age Occurring on Baratang Island, Andaman, India


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1 M. A. C. S. Research Institute, Pune-411 004, India
     

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The paper incorporates systematic descriptions of ten planktonic foraminiferal species recovered from the ejected material of mud volcanoes active on the Baratang Island, Andaman. The species are Pseudotextularia browni Masters, P. carseyae (Plummer, Globotruncana aegyptiaca Nakkady, G. arca (Cushman), G. concavata (Brotzen), G. coronata (Bolli), G. fornicata Plummer, G. gansseri Bolli, G. renzi Gandolfi and G. schneegansi Sigal.

Appearance of Rugoglobigerina rugosa, Ventilabrella glabrata, Globotruncana concavata and simultaneous extinction of G. schneegansi indicate Santonian as a lower age limit of Cretaceous rocks on the Baratang Island.


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  • Foraminiferal Evidence for Sediments of Santonian Age Occurring on Baratang Island, Andaman, India

Abstract Views: 180  |  PDF Views: 4

Authors

C. Rajshekhar
M. A. C. S. Research Institute, Pune-411 004, India

Abstract


The paper incorporates systematic descriptions of ten planktonic foraminiferal species recovered from the ejected material of mud volcanoes active on the Baratang Island, Andaman. The species are Pseudotextularia browni Masters, P. carseyae (Plummer, Globotruncana aegyptiaca Nakkady, G. arca (Cushman), G. concavata (Brotzen), G. coronata (Bolli), G. fornicata Plummer, G. gansseri Bolli, G. renzi Gandolfi and G. schneegansi Sigal.

Appearance of Rugoglobigerina rugosa, Ventilabrella glabrata, Globotruncana concavata and simultaneous extinction of G. schneegansi indicate Santonian as a lower age limit of Cretaceous rocks on the Baratang Island.