Maastrichtian-Thanetian planktonic foraminiferal biostratigraphy and remarks on the K-Pg boundary in the southern Kocaeli Peninsula (NW Turkey)

dc.creatorSarigül, Volkan (TTU)
dc.creatorHakyemez, Aynur
dc.creatorTüysüz, Okan
dc.creatorGenç, Şengül Can
dc.creatorYilmaz, İsmaıl Ömer
dc.creatorÖzcan, Ercan
dc.date.accessioned2022-08-31T16:27:02Z
dc.date.available2022-08-31T16:27:02Z
dc.date.issued2017
dc.descriptionThis Article is brought to you for free and open access by TÜBİTAK Academic Journals. It has been accepted for inclusion in Turkish Journal of Earth Sciences by an authorized editor of TÜBİTAK Academic Journals. This work is licensed under a Creative Commons Attribution 4.0 International License.en_US
dc.description.abstractThe Kocaeli Peninsula (NW Turkey) provides one of the best exposed deep marine Upper Cretaceous-Palaeocene sections in north-western Anatolia. The biostratigraphic framework from three sections, namely Belen, Bulduk, and Toylar, in the southern part of the Kocaeli Peninsula is established by means of planktonic foraminifera. A very rich planktonic foraminiferal assemblage analysed both in thin sections and washed residues records a biozonation ranging from the Contusotruncana contusa (CF6) Zone (Maastrichtian) to the Globanomalina pseudomenardii (P4) Zone (Thanetian). Although a major part of the biozones in the studied interval is clearly defined, the upper three zones (CF1-3) of the latest Maastrichtian and the P0 and P1a zones of the earliest Palaeocene cannot be recognised. These unrecorded biozones are either completely missing or occurred within a very condensed interval in the studied sections. A hardground layer characterised by oxidation and extensive bioturbation might indicate a possible biostratigraphic gap spanning the CF1-3 zones of the uppermost Maastrichtian in the Belen and Bulduk sections. In the Toylar section, on the other hand, the CF1-3 zones still cannot be detected although a hardground layer is not observed. The biostratigraphic resolution across the Cretaceous-Palaeogene (K-Pg) boundary in the studied sections cannot be improved due to the condensed and well-cemented pelagic carbonates of the boundary interval.en_US
dc.identifier.citationSARIGÜL, VOLKAN; HAKYEMEZ, AYNUR; TÜYSÜZ, OKAN; GENÇ, ŞENGÜL CAN; YILMAZ, İSMAİL ÖMER; and ÖZCAN, ERCAN (2017) "Maastrichtian-Thanetian planktonic foraminiferal biostratigraphy and remarks on the K-Pg boundary in the southern Kocaeli Peninsula (NW Turkey)," Turkish Journal of Earth Sciences: Vol. 26: No. 1, Article 1. https://doi.org/10.3906/yer-1602-23en_US
dc.identifier.urihttps://doi.org/10.3906/yer-1602-23
dc.identifier.urihttps://hdl.handle.net/2346/90097
dc.language.isoengen_US
dc.subjectKocaeli Peninsulaen_US
dc.subjectNW Turkeyen_US
dc.subjectUpper Cretaceousen_US
dc.subjectPalaeoceneen_US
dc.subjectPlanktonic Foraminiferaen_US
dc.subjectBiostratigraphyen_US
dc.titleMaastrichtian-Thanetian planktonic foraminiferal biostratigraphy and remarks on the K-Pg boundary in the southern Kocaeli Peninsula (NW Turkey)en_US
dc.typeArticleen_US

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