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
Trödelsteine (rock formation) Trödelsteine (rock formation) The Trödelsteine, also called the Trödelstein, is a rock formation near Emmerzhausen in the county of Altenkirchen in the German state of Rhineland-Palatinate. It consists of columnar basalt and a basaltic blockfield in the Heller Upland. The rock formation has been designated as a natural monument, about 0.3 hectares in area. The Trödelsteine lies about 1.2 kilometres northeast of Emmerzhausen, 3.6 km southwest of Burbach and 2.6 km northwest of Lippe, which are both in the neighbouring county of Siegen-Wittgenstein in North Rhine-Westphalia. The rocks extend up to the summit of the mountain on which they are