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
Brazos Valley Brazos Valley The Brazos Valley ( ) is a region in the U.S. state of Texas (a subsection of the larger Central Texas region) consisting of the counties of Brazos, Burleson, and Robertson (which collectively comprise the Bryan–College Station metropolitan area), and the neighboring counties of Grimes, Leon, Madison, and Washington. The area is centered on Brazos County, the cities of College Station and Bryan, and Texas A&M University. Although the Brazos River lies at the center of the region, not all areas of the region are a part of the Brazos watershed. The population of the region was estimated