New Outlook for the Stratigraphy of Sinjar Formation (Paleocene-Early Eocene) in Sinjar Anticline Northwestern Iraq

Field and facies analyses have revealed the possibility of dividing the reefal Sinjar Formation (PaleoceneEarly Eocene) within Sinjar anticline into three diagnostic stratigraphic units. These are: lagoonal semi Massive lower unit, lagoonal stratified middle unit and massive upper unit, which is lagoonal, reefal and forereefal in its lower, middle and upper parts respectively. The units are characterized by the quick identification and ease lateral correlation across most lithological sections exposed in the area. It has also been revealed that the lower and upper contact surfaces are unconformable.