GELİBOLU YARIMADASI GEÇ EOSEN YAŞLI CEYLAN FORMASYONU DERİN DENİZ ÇÖKELLERİ İZ FOSİLLERİ (GB TRAKYA, TÜRKİYE)

Bu çalışmada, Gelibolu yarımadası, Fındıklı köyü kuzeybatısı ve Ece Limanı çevresinde yüzeyleyen Ceylan formasyonu iz fosilleri ilk kez tanımlanmıştır. İz fosiller, Trakya Havzası' nda ince tabakalı, paralel ve ripıl laminalı kumtaşları ile gri renkli silttaşı, çamurtaşının baskın olduğu yamaç yakını havza düzlüğü çökel istiflerinde bulunurlar. Geç Eosen yaşlı Ceylan Formasyonu depolanma öncesi (Belorhaphe zickzack, Desmograpton isp., Helicolithus ramosus, Helminthorhaphe flexuosa, Phycosiphon incertum, Paleodictyon majus, Paleodictyon minimum, Paleodictyon strozzii, Saerichnites isp., Spongeliomorpha oraviense, Trichichnus isp., Urohelminthoida appendiculata) ve depolanma sonrasını temsil eden (Planolites isp., Ophiomorpha isp., Ophiomorpha annulata, Scolicia isp., Scolicia prisca (nadir), Thalassinoides isp.) iz fosilleri içerir. Bu iz fosil topluluğu, ince tabakalı türbiditik çökellerin oluşturduğu, normal derin deniz şartlarını yansıtan Nereites (Paleodictyon altiknofasiyesi) iknofasiyesi için tipiktir.

TRACE FOSSILS FROM DEEP SEA SEDIMENTS OF THE LATE EOCENE CEYLAN FORMATION, GELİBOLU PENINSULA (SW THRACE, TURKEY)

In this study, trace fossils of the Ceylan Formation (Late Eocene) in the area NW of Fındıklı village and on the coast of the Ece Bay the Gelibolu Peninsula are identified for the first time. They occur in gray siltstones and mudstones intercalated with thin-bedded, parallel and ripple laminated sandstones, which were deposited on a basin plain in proximilt of a slopes in the Thrace Basin. The Late Eocene Ceylan Formation includes pre-depositionl (Belorhaphe zickzack, Desmograpton isp., Helicolithus ramosus, Helminthorhaphe flexuosa, Paleodictyon majus, Paleodictyon minimum, Paleodictyon strozzii, Saerichnites isp., Urohelminthoida appendiculata) and post-depositional (Phycosiphon incertum, Spongeliomorpha oraviense, Trichichnus isp., Planolites isp., Ophiomorpha isp., Ophiomorpha annulata, Scolicia isp., Scolicia prisca, and Thalassinoides isp.) trace fossils. This trace fossil assemblage is typical of the Nereites ichnofacies (Paleodictyon ichnosubfacies), which characterize deep-sea, thin bedded turbididitic sediments oxygenated sea floor.

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