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Gorges du Verdon, France
The Kolbay section comprises approximately 90 m of mid-Cretaceous (upper Albian and lower Cenomanian) strata, overlain unconformably by the Neogene limestones of the Ustyurt Plateau. The section and its ammonite fauna have been described by Kennedy et al. (2008). A part of the shark teeth assemblage has been described by Siversson et al. (2013). Three beds yielded shark teeth, at 44.5, 47.4 and 51.6 m above the base of the section. The lowest of these beds is a phosphatic lag yielding abundant, slightly abraded, teeth of small shark and ray species. The two higher beds comprise fine sandstones with well-preserved medium to large shark teeth, and fish and marine reptile remains. Teeth are mostly found on the steeper slopes or where the mid-Cretaceous sands were protected from weathering by overlying Neogene limestones. Along the 6 km section, only a few hundred metres were unweathered and yielded vertebrate remains, principally the south and southwest facing slopes. The shark tooth bearing beds are sandwiched between two ammonite-yielding levels. The fauna of the lower bed, the ‘Placenticeras bed’ is indicative of the Mortoniceras (Subschloenbachia) perinflatum Zone (Kennedy et al. 2008), indicating a late Albian age. The upper bed, the ‘Schloenbachia bed’ yields ammonites, principally Mantelliceras lymense and Algerites ellipticus, typical of the Neostlingoceras carcitanense Subzone of the early early Cenomanian Mantelliceras mantelli Zone. Thus, the Kolbay fossil faunas are dated as being latest Albian or earliest Cenomanian, pending further detailed work on the section.
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The Kolbay section is situated approximately 75 to the northeast of the hamlet of Uzen, on the western flanks of the Ustyurt Plateau.Drag the map and zoom in or out for the best view of this locality.
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