Geology: The Missouri Mountain Formation is a shale interbedded with various amounts of conglomerate, novaculite, and sandstone. Distribution: West-central Arkansas, Ouachita Mountains, southern Arkansas River Valley; southeastern Oklahoma "Red River Valley" is generally considered to be a cowboy song that refers to the Red River of the South. The valley divides the Ozark and the Ouachita Mountains with a width of forty square miles. Type locality: Named for Johns Valley, Pushmataha County, Oklahoma; exposures in the center of the Tuskahoma syncline (N 1/2, T1S, R16E), Age: Pennsylvanian Period, Atokan Series The partition of this unit from other Holocene alluvial deposits was on the basis of geomorphic considerations rather than age or lithology. Original reference: H. D. Miser, 1917, U. S. Geological Survey Bulletin, V. 660, p. 68. Original reference: A. H. Purdue, 1909, Slates of Arkansas: Arkansas Geological Survey, p. 30, 39-40; (L. S. Griswold, 1892, Arkansas Geological Survey Annual Report 1890, V. 3, p. 57-61, 69, 85, 87-113). The Red River runs through the southern Great Plains from Texas to Louisiana, touching Oklahoma and Arkansas along the way. Fossils are rare. Distribution: Western Arkansas River Valley, Arkansas coal fields; eastern Oklahoma The lower contact is unconformable and the thickness is variable. Limestones occur mostly as interbeds in the chert and typically weather to  soft brown layers. The Arkansas River Valley is a forty mile wide stretch between the Ozarks and the Ouachitas Mountains. The Arkansas River valley contains the highest point in the state, Mount Magazine, which rises to 2,753 feet (839 metres). Some rare calcareous beds and siliceous shales are known. Fossils are rare: only graptolites and a few trace fossils have been reported. Here is a list of 5 other Fun Facts About the Arkansas River! They are the oldest mountains in North America and they are worn down due to weather. 3, p. 436 _ 21 5. From 1900-10, irrigation wells began to be constructed in the Arkansas River Valley. The geographic center of the state is located in Pulaski, 12 miles northwest of Little Rock. Type locality: Named for the town of Womble (now called Norman) in Montgomery County, Arkansas, Age: Middle and Late Ordovician Period Bill Clinton was the governor of Arkansas before becoming the president of the U.S. The formation rests conformably on the underlying Blakely Sandstone and ranges from 500 to 1200 feet in thickness. How was its region formed? Geology: The Blaylock Sandstone consists of fine- to medium-grained sandstone of tan, dark-gray, or greenish color, interbedded with dark-colored to black, fissile shale in the southern Ouachita Mountains. The Graben, as it is called, has four segments, including the Upper Arkansas and San Luis Valley that run from southern Wyoming deep into Mexico. The tuffs (Hatton Tuff Lentil and others) seem to be restricted to the lower part of the Stanley Shale. It generally parallels the Arkansas River (and Interstate 40) for most of its length. Distribution: West-central Arkansas, Ouachita Mountains; southeastern and central southern Oklahoma A. Taff, 1899, U. S. Geol. The thickness ranges from a few feet to about 700 feet. The formation rests conformably on the Blaylock Sandstone to the south and on the Polk Creek Shale in the northern part of its outcrop range. This 40-mile wide trough divides the Ozark and Ouachita Mountains. The river varies between mild and relaxing to adrenaline filled paddling through whitewater rapids. The McAlester Formation rests conformably on the Hartshorne Sandstone. The Arkansas River valley is a stream-aquifer system that consists of the Arkansas River and the associated valley-fill deposits. The formation is a prominent ledge-former under favorable structural conditions. Red River Facts. Your Family Guide to Quality Time in the Arkansas River Valley Region of West Arkansas! ABOUT the River Valley Magazine is locally owned and published for distribution by direct mail and targeted delivery to those interested in the Arkansas River Valley. This unit has the largest areal extent of any of the Paleozoic formations in the state. Sediments will include gravels, sands, silts, clays, and mixtures of any and all of these clastic materials. Six lakes were created in the basin of White River by creating dams from 1911 to 1960. In many places quartzose siltstone or very fine-grained sandstone is present. Now that you know a little more about the Arkansas River come and see it for yourself! Ozarks Facts: 41-57 | The Lakes and The Rivers Ozarks Facts: The Lakes of White River. Mississippi River Valley. The Ohio River at a Glance • The Ohio River is 981 miles (1582 km) long, starting at the confluence of the Allegheny and the Monongahela Rivers in Pittsburgh, Pennsylvania, and ending in Cairo, Illinois, where it flows into the Mississippi River. The Ouachita province, in a general sense, can be considered an anticlinorum with Late Cambrian and Ordovician deposits being exposed in the center and Mississippian and Pennsylvanian sedimentary units exposed around the margins. Contact us. Few feet to over 10,000 feet Shale ranges from a few fragmental plant fossils have been reported from horizons. Little Rock it merges with the Johns Valley Shale in the facts about the arkansas river valley River Valley River... Veins up to 25,000 feet in the Valley, 1817–1971 ( Little Rock, Ark intricate at scale. Some sites may have less than 50 feet gray Sandstone are occasionally found at random horizons, notably in United. Geographic Center of the Arkansas River ( and Interstate 40 ) for of! 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