A contribution to the Creaceous biostratigraphy of Kaolos area, NE Iraq

Prilog biostratigrafije krede u oblasti Kaolosa (SI Irak)

Abstract

Paleontological analytical results (prevailing planktonic foraminifera, ammonites) are presented for Cretaceous sediments of Kaolos area (Iraqi Kurdistan, NE Iraq). Cretaceous deposits in the area (high Folded Zone and Imbricated Zone) mainly belong to the Balambo Formation sens lato (Valanginian-Turonian), which have here some specific properties. The necessity is indicated for reconsideration of Balambo Formation because sediments in its upper part (based on the given foraminiferal content) are younger than Turonian. Campanian-Maastrichtian sequence in series of the Imbricated Zone are age equivalent with a part of Schiranish Formation, respectively with lower part of Tanjero Formation.