Stratigraphical study of the Late Jurassic – Early Cretaceous boundary of the Southern part of the Coastal Chain, Syria

Abstract

The stratigraphic studies which we did in the southern part of the coastal chain on the boundary of  Late Jurassic which represent Al-Nasra Formation and Early Cretaceous which represent Bab janh Formation confirm absence of Bortlandian which represent the top of Jurassic and also absence of Neocomian which represent the stages of the base of Cretaceous, and that during the searching of the specific benthic foraminifers of this stages. The micropaleontology studies show in the studied area of the benthic foraminifers the top of the upper Jurassic in the coastal chain ( Al-Nasra Formation) belongs to Kimmeridgia - Oxfordian , and the the base of the Cretaceous (Bab janh) formation belongs to Aptian stage.