Изотопы углерода и кислорода в раковинах нуммулитид и известняках переходного ипрско-лютетского интервала бахчисарайского разреза (Крым). Палеогеографическая интерпретация
Journal: Вестник института геологии Коми научного центра Уральского отделения РАН
Year: 2011

For the first time the ratio of carbon and oxygen isotopes in the large benthic foraminifera shells (Nummilites and Assilina nummulitides), Simferopol and lower Novopavlovsk formation limestones in the Crimean Bakhchisaray section have been analyzed. δ13C and δ18O variation curves have been constructed. It was demonstrated that the nummulitides and limestones. shells formation terms are reflected in their carbon and oxygen isotopic composition. Thus, the cooling in the early Middle Eocene was de