The Cement-Chickasha Anticline includes parts of Caddo and Grady counties in southwestern Oklahoma (Fig. 1). The structure is elongated and trends in a northwesterly direction. The town of Cement is located in the central part of the structure. Three major highways intersect the site. The H. E. Bailey Turnpike extends diagonally across the southeastern portion of the site, while U.S. 277/Oklahoma 19 trends east–west through the southern half of the site and connects the towns of Cement and Cyril. Oklahoma 8 trends north-south through the western portion of the site and terminates at the town of Cyril.