Biostratigraphy of larger foraminifera in the Eocene (upper Ypresianlower Bartonian) sequences of the Southern Slope of the Western Caucasus (Russia, NE Black Sea). Correlation with regional and standard planktonic foraminiferal zones
Keywords:
Lower/Middle Eocene, Larger and planktonic foraminifera, Biostratigraphy, Caucasus, PerithetysAbstract
The biostratigraphic analysis of two Eocene (Upper Ypresian-Lower Bartonian) sections located on the Southern Slope of the Western Caucasus (Inal and Loo sections in the Tuapse and Sochi districts, respectively) was carried out using planktonic and larger foraminifera. The planktonic foraminiferal assemblages recorded in these southern sections were similar to those recorded in the North Caucasian region and enabled to recognize the lower Ypresian to lower Bartonian zones of the local Caucasian biostratigraphic scale. The turbiditic sedimentary processes recorded in these sections affected the composition of larger foraminiferal assemblages, which is mostly represented by nummulitids and orthophragmines. Although the larger foraminiferal assemblages are typical of the Peritethys and also resemble those reported in the Northern Caucasian region, the Tethyan SBZ zonal scheme could be applied and SBZ11 to 15/16 zones were identified (at least late Ypresian to middle Lutetian). This integrated study improves the correlation between the planktonic and benthonic local biostratigraphic scales in the Caucasus and allows their correlation with the standard and other biostratigraphic scales in neighbouring Tethyan regions.Downloads
Published
Issue
Section
License
Copyright
The commercial rights of the printed and online versions of Geologica Acta are property of the UB, ICTJA, IDAEA and UAB, and Geologica Acta must be cited for any partial or full reproduction.
The opinions and conclusions stated in each article are the exclusive responsability of the authors and do not necessarily coincide with those of the above mentioned institutions UB, ICTJA, IDAEA and UAB.
Author Rights
Authors retain the copyright on their papers (accepted manuscript, uncorrected proof and published paper) and are authorized to post them on their own Web page or their institutional repositories. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission of Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.
Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows others to alter, remix or build upon a paper and the resulting work may be distributed under the same or similar license to this one.