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Authors
Affiliations
1 Geological Survey of India, Bandlaguda, Hyderabad 500660, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 39, No 1 (1992), Pagination: 39-49
Abstract
The Raghavapuram Formation, as demarcated now, consists of shale and micaceous sandstone and contains Early Cretaceous (Neocomian-Aptian age) palynofossil assemblage-represented by Microcachryidites antarcticus, Contignisporites sp., Callialasporites sp, Lycopodiumsporites sp, Impardecispora sp, and Concavissimisporiles sp. The Tirupati Formation consists of conglomerate, ferruginous sandstone and sandstone. The hitherto considered 'Gollapalli sandstone' in Adamilli-Gopalapuram area of West Godavari district forms part of the continental Gondwana sequence (Kota Formation). Therefore, the present study has revealed that there is no stratigraphic unit called Gollapalli Formation in the Upper Gondwana of the Krishna-Godavari coastal tract and the revised stratigraphic succession consists of only two units, namely, the Raghavapuram and Tirupati Formations.
Keywords
Stratigraphy, Gondwana, Krishna-Godavari, Andhra Pradesh.
