Öz
Thanetian-early Ypresian (middle Ilerdian) limestones from the northern part of Isparta Angle (Keçiborlu, Isparta, SW Turkey) contain rich benthic foraminiferal assemblage. Ilerdian beds of the Büyükkırtepe formation are characterized by high diversity of the following Alveolina species: Alveolina (Glomalveolina) karsica, A. (G.) aff. karsica, A.(G.) lepidula, A.(G.) cf. subtilis, A. (Alveolina) aragonensis, A. (A.) cemali, A. (A.) corbarica, A. (A.) cf. coudurensis, A.(A.) decipiens, A.(A.) dedolia, A.(A.) ellipsoidalis, A.(A.) erki, A.(A.) guidonis, A.(A.) cf. ilerdensis, A.(A.) montanarii, A.(A.) moussoulensis, A.(A.) pasticillata, A.(A.) pisella, A.(A.) rotundata kazancii, A.(A.) trempina, A.(A.) varians, and A.(A.) vredenburgi. In this study, 30 different Alveolina species including two new species and a new subspecies namely as A. (A.) acari n. sp., A. (A.) ozbahcensis n. sp., and A.(A.) avsari fusunae n. ssp. were identified for the first time. Besides, some probable new subspecies that were unnamed yet due to the insufficient number of individuals were also defined and proposed. Despite having close stratigraphic distributions with coeval assemblages described in different regions of Tethyan Province, Alveolina assemblages of the study area exhibit some stratigraphical range differences and present SBZ 3-SBZ 8 biozone intervals. The obtained data show that the study area was a lagoon to low en rgy shallow marine paleoenvironment with normal salinity in Thanetian – middle Ilerdian interval.
Destekleyen Kurum
Geological Researches Department of General Directorate of Mineral Research and Exploration
Teşekkür
This article was prepared from a part of the first author's PhD thesis. In the sample collecting, facilities of the project no 2016-30-14-05 of Geological Researches Department of General Directorate of Mineral Research and Exploration (MTA) were benefited. We would like to thank Dr. Şükrü Acar (MTA) for his supports to the laboratory studies and foraminiferal descriptions. Prof. Dr. Wojciech Nemec (University of Bergen) made valuable contributions with his opinions on regional paleogeographic evaluations. We are thankful to Prof. Dr. Atike Nazik (Çukurova University), Prof. Dr. Marcelle BouDagher- Fadel (University College London) and the other two anonymous referees for their constructive criticism which improved the article.