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

Prabha Kalia ¹, Amit Banerjee ¹

Affiliations
1 Department of Geology, University of Delhi, Delhi 110 007, IN

Abstract

Late Eocene strata bearing Pellatispira crassicolumnata, Silvestriella tetrahedra, Nummulites fabianii, Nummulites striatus and Asterocyclina stellata have been identified in the subsurface samples from Tanot-I well 145 km northwest of Jaisalmer Earlier in the Rajasthan region, the sea was considered to have finally withdrawn by the Late-Middle Eocene. The present record of strata of Late Eocene age supports the hypothesis of oceanic subduction followed by obduction of the Indus Basin. The presence of Late Eocene in Kirthar and Sulaiman Ranges, Pakistan, and Jaisalmer, India and their absence in Kutch can thus be explained.

Keywords

Pellatispira, Eocene, Jaisalmer, Rajasthan.

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Prabha Kalia ¹, Prabhas Pande ¹

Affiliations
1 Department of Geology, University of Delhi, Delhi 110 007, IN

Abstract

The Upper Permian index species Cyclolobus walkeri is recorded and described from the base of C-Member, Zewan Formation, Guryul ravine, Sri nagar, Kashmir. On the basis of the present record of the Upper Permian C. walkeri (Diener, 1903), C-Member is correlated with the mid-Dzulfian Chhidruan Stage. By extension, the units above and below belong to the Dzulfian series though the existing record of fauna is inconclusive regarding the age of the members B and D.

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