The majority of the Tulkarm district rocks are comprised of carbonate sediments such as limestone, dolomite, marl and chalk. The age of these rocks ranges from Cretaceous to Quaternary.
Jurassic rocks have no outcrops in the area but they are identified by bore holes.
The general geology of the Tulkarm area is represented in Figure 4.1. It forms the lower part of the lower Cenomanian and is exposed west of the Fara'a anticline. It consists mainly of limestone, dolomite and marl. The limestone is generally massive and thick. This formation refers to the upper part of the lower Cenomanian and is exposed mainly west of the Fara'a anticline, where it consists of dolomite, marly and chalky limestone.