Fruitland Formation the Colorado-New Mexico state line, and is one of the most productive areas for coalbed methane in the United States. The Fruitland is underlain by the Pictured Cliffs Sandstone, and overlain by the more recent Kirtland Formation. The sequence of rocks represents the final filling of the Cretaceous seaway. The underlying Pictured Cliffs is a marginal marine sandstone, deposited in an environment similar to offshore barrier islands of the southeast United States. As the seaway retreated, the Pictured Cliffs was covered by the Fruitland Formation, which was deposited in near-shore swampy lowlands. The formation is dated to the late Campanian
Raven Rocks (rock formation) Gap. The formation is often referred to as "the rollercoaster" by Appalachian Trail hikers as the trail undulates between these spurs and hollows along the western face of the mountain along this stretch of the ridge. The peak is notable for the Crescent Rock cliffs. The Appalachian Trail crosses the saddle of the ridge. Raven Rocks (rock formation) Raven Rocks is spur of Blue Ridge Mountain in Jefferson County, West Virginia. The peak is located just north of Jefferson County's border with Clarke County, Virginia and west of its border with Loudoun County, Virginia. Raven Rocks is formed by the