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The Red River Formation is a stratigraphical unit of Late Ordovician age in the Williston Basin.. It takes the name from the Red River of the North, and was first described in outcrop in the Tyndall Stone quarries and along the Red River Valley by A.F. Foerste in 1929.
In Oklahoma, the light-colored limestone transitions gradually into red-colored sandstone and shale until the limestone is virtually nonexistent in north-central Texas. [5] The portion of the red beds with abundant fossil deposits is in Texas between the Red River and the Salt Fork Brazos River. [6]
The Red River Gorge is a unique, scenic, natural area that is designated as a geological area and a national landmark. It's also registered on the National Registry of Historic places. It features ...
The Red River Formation lies unconformably on the Winnipeg, and consists of shallow marine carbonate, anhydrite, and salt sedimentation. Conformably overlying the Red River is the Ordovician Stony Mountain Formation and Stonewall Formation, followed by the Silurian Interlake Group.
The Red River Gorge is a canyon system on the Red River in east-central Kentucky, United States.Geologically it is part of the Pottsville Escarpment.. The gorge lies within the Daniel Boone National Forest and was subsequently designated the Red River Gorge Geological Area, an area of around 29,000 acres (12,000 ha; 120 km 2; 45 sq mi). [1]
Central Minnesota is composed of (1) the drainage basin of the St. Croix River (2) the basin of the Mississippi River above its confluence with the Minnesota, (3) those parts of the Minnesota and Red River basins on the glacial uplands forming the divides of those two basins with that of the Mississippi, (4) the Owatonna Moraine atop a strip of ...
The Arroyo Formation is the oldest and most eastern component of the Clear Fork Group. It extends in a Northeasterly direction from Concho County up as far north as Wilbarger County. North of the Red River in Oklahoma, the equivalent formation is the upper Garber Formation and cave deposits of Richards Spur (formerly Fort Sill). [3] [4]
It is believed that the initial formation of the Great Raft was triggered by catastrophic flooding as the Red River was going through some major geomorphic threshold, such as a major avulsion. The main contributors to the development of the Great Raft are believed to be the shifting geomorphic conditions in conjunction with extensive ...