Integrated palaeontological characteristics (ammonites, ostracods, foraminifers, dinocysts) of the Berriasian deposits of central Crimea
Journal Title: Volumina Jurassica - Year 2014, Vol 12, Issue 1
Abstract
The Berriasian deposits of the central Crimea have been studied in order to compose a composite sequence of the stage with detailed palaeontological characterization. The Berriasian includes the Bedenekyrskaya Formation (packstones), Bechku Formation (siltstones, sandstones) and Kuchkinskaya Formation (sponge packstones, clays, siltstones, and coral-algal bioherm framestones). The Jacobi, Occitanica and Boissieri zones were identified based on ammonites found in the sections. A micropalaeontological analysis determined the following: 6 foraminiferal assemblages, the [i]Costacythere khiamii[/i] – [i]Hechticythere belbekensis[/i] and [i]Costacythere drushchitzi[/i] –[i] Reticythere marfenini[/i] ostracod assemblages, and a [i]Phoberocysta neocomica[/i] dinocyst assemblage. Palaeoecological analysis of the ostracod and foraminiferal associations indicates a moderately warm marine basin with normal salinity and shallow depths (tens of meters). Only the sponge horizon was probably deposited in a deeper-water environment.
Authors and Affiliations
Julia N. SAVELIEVA, Anna A. FEDOROVA, Olga V. SHUREKOVA, Vladimir V. ARKADIEV
Keywords
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- EP ID EP67973
- DOI 10.5604/17313708 .1125288
- Views 72
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