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The Ouachita Mountains (/ ˈ w ɒ ʃ ɪ t ɔː /), simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma.They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thrust Belt, one of the important orogenic belts of North America. [3]
The Ouachita orogeny was a mountain-building event that resulted in the folding and faulting of strata currently exposed in the Ouachita Mountains. The more extensive Ouachita system extends from the current range in Arkansas and Oklahoma southeast to the Black Warrior Basin in Alabama and to the southwest through the Llano , Marathon , and ...
English: Topographic map of the Ouachita Mountains in the U.S. states of Arkansas and Oklahoma. Also showing the Ouachita National Forest boundaries.; Credits. Produced with public domain data from the National Atlas of the United States, and incorporating public domain highway shields from Wikimedia.org. Projection UTM zone 15 North: EPSG:26915.
The 11,141-acre (45.1 km 2) Poteau Mountain Wilderness is located in the north-central range of the Ouachita mountains in Arkansas. The 6,301-acre (25.5 km 2) Dry Creek Wilderness is located in the north-central ranges of the Ouachita Mountains near Magazine Mountain. It is the state's second-smallest wilderness is known for scenic overlooks ...
To the north of the DFW Metroplex, the roots of the mountains can be identified in SE Oklahoma as the Arbuckle mountains, heavily eroded from the original vast mountain range. The Marathon-Ouachita-Appalachian-Variscan cordillera, which stretched through central Texas, around Arkansas, up through the Appalachian Mountains and eventually into ...
There are three distinct mountain ranges within the U.S. Interior Highlands: The Ouachita Mountains of Arkansas and Oklahoma, which can be divided into a number of subranges including the mountains of the Arkansas River Valley (called the Frontal Ouachita Mountains); the highest point is Mount Magazine at 2,753 ft (839 m).
Shaded relief map of the Llano Estacado. Texas contains a wide variety of geologic settings. The state's stratigraphy has been largely influenced by marine transgressive-regressive cycles during the Phanerozoic, with a lesser but still significant contribution from late Cenozoic tectonic activity, as well as the remnants of a Paleozoic mountain range.
Northeast trending ridges of pre-Permian Paleozoic strata in the basin were formed by the Ouachita orogeny, which also formed the Ouachita Mountains of Arkansas and Oklahoma. The ancient faulting that produced the Llano Uplift is believed to be related to that which produced the Marathon Uplift in west Texas.