Late Oligocene-Early Miocene foraminiferal biostratigraphy and paleoenvironments of the Maibong-Jagdi Area, North Cachar Hills of Assam, India

On the basis of planktic and benthic, foraminiferal assemblages the Oligocene/Miocene boundary has been recognized at the base of the Lower Bhuban Formation (Maibong-Jagdi area, Cachar Hills). The underlying Renji Formation consists exclusively of arenaceous foraminifera of Late Oligocene age. A det...

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Bibliographic Details
Published in:Marine micropaleontology 1995-12, Vol.26 (1-4), p.281-285
Main Author: Rao, Datti C.
Format: Article
Language:English
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Summary:On the basis of planktic and benthic, foraminiferal assemblages the Oligocene/Miocene boundary has been recognized at the base of the Lower Bhuban Formation (Maibong-Jagdi area, Cachar Hills). The underlying Renji Formation consists exclusively of arenaceous foraminifera of Late Oligocene age. A detailed biostratigraphic analysis has lead to the identification of the Lower Bhuban Formation in both the Mikir shelf and the Schuppen Belt. Renji and Lower Bhuban Formations are separated by a conglomerate bed. The sediments of the Renji Formation have been deposited under marginal marine-deltaic conditions. Sediments of the Bhuban Formation were deposited in a shallow marine environment.
ISSN:0377-8398
1872-6186
DOI:10.1016/0377-8398(95)00029-1