The Oligocene Argyrotopos profile in the external lonian basin (Epirus, Greece): Microfacies and microfossilsThe Oligocene Argyrotopos profile in the external lonian basin (Epirus, Greece): Microfacies and microfossils Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-311995enThe Argyrotopos profile of the Oligocene Ayii Pantes Formation in the NW Greece was studied using litho- and biofacies-analysis. The exposed sequence is mainly composed of monotonous marls and sandy marls. A rich fossil content, e.g. calcareous nannoplankton, is recorded. Some sandstone beds and two graded limestone beds with abundant lepidocyclinids and globigerinids are intercalated. The nannofossil assemblages from the measured profile of the Ayii Pantes Formation are attributed to theSphenolithus distentus Zone (NP 24) which is equivalent to theCyclicargolithus floridanus Subzone (CP 19a) of the Chattian, Upper Oligocene. The deposition took place in an euphotic subtidal environment situated on the eastern margin of the Apulian Platform. The lepidocyclinids were derived from this platform and were transported basinwards. The formation of the marls is influenced by sediment flux from the west.http://creativecommons.org/licenses/by/4.0/Facies133107-119 Manoutsoglou Emmanouil Μανουτσογλου Εμμανουηλ Dorothee Mertmann Jan Bartholdy Dimitris Frydas Spyridon M. Bellas Springer Verlag Geology--Surveys geological surveys geology surveys