sentences:  About 525 million years ago, when northern Arizona was at the bottom of a shallow sea, a thin layer of sediment called the Tapeats Sandstone was deposited over the Cleopatra tuff.Limestones and other sediments accumulated above the sandstone until about 70 million years ago when the Laramide Orogeny created new mountains and new faults in the region.One of these faults, the Verde Fault, runs directly under Jerome along the Jerome anticline.