Biostratigraphic Aspects and Depositional Environments of Eocene Deposits of Northwestern Suluova (Amasya, Northern Turkey)
Calibe K. TASGIN, Meral KAYA, Ibrahim TURKMEN

Abstract
The Eocene deposits which are interpreted as deposits of the northern branch of Neo-Tethys crop out over a wide area in northern Turkey, in an approximately E-W belt. The biostratigraphic characteristics and depositional environments of the Celtek and Armutlu formations in Suluova (Amasya) were investigated. Four stratigraphic sections were measured and analyzed. Eight planktic foraminiferal genera with fourteen species and thirty benthic foraminiferal genera with five species were identified. Two planktic foraminiferal biozones from the Early Eocene (Morozovella aragonensis and Acarinina pentacamerata biozones) and one benthic foraminiferal biozone from the Middle Eocene (Nummulites laevigatus biozone) were defined. The charophytes (with Nitellopsis and Harrisichara) associated with these sediments can be probably attributedto the Disermas-Piveteaui zones. These biozones establish the age of the Armutlu Formation as Early-Middle Eocene. Sedimentological and paleontological data indicate that the Celtek and Armutlu formations were deposited in delta, lagoon, and shallow marine environments.

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