Sulfur deposits are found in several areas of Iraq, the most important of which is at the present time the area between the opening and the Mosul and on both sides of the Tigris River, that is, the area whose terrain is convex Anticline and concave twists and extends from the northwest to the southeast, and sulfur is found in sedimentary rocks belonging to the Miocene formations Al-Asfali "Faris Al-Asfal" which extends and includes large areas of the area. It is also noted that this region has been exposed to effective and severe erosion factors that helped create many outlets that worked to collect sulfur deposits in the middle and upper parts where erosion occurred, and the nature of limestone Al Habsiah is also paved and helped to achieve these gaps by responding to those melting working rocks that formed the Caverns caves in which groundwater flowed and thus facilitated the arrival of that water to those depths that had an effect on the deposition of sulfur, and these gypsum rocks often contain oil, gas or Gear, that is, there is a relationship between the presence of sulfur and oil fields, as sulfur can be obtained from natural gas and this is what is actually present in the sulfur extraction unit in Kirkuk at For example, but not limited to, it is also noticed that all convex twists containing sulfur cross the Tigris River except for the Quliyan twist, which was later found to have traces indicating that he was crossing an ancient river dating back to the fourth time.