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Oil exploration began in earnest in 1916 with an unsuccessful well east of El Dorado, in Union County (which at the time was known as Urbana County). A week after Samuel S. Hunter found modest amounts of oil in the Hunter No. 1 well near Stephens, Arkansas, the Constantin Oil and Refining Company found large amounts of oil and natural gas. Soon ...
The highest natural point is Raspberry Mountain at 2,358 feet (719 m). The headwaters of multiple rivers are found in this area, including the Caddo, Cossatot, and Little Missouri rivers. The Cross Mountains are located in Polk and Sevier counties, Arkansas and McCurtain County, Oklahoma. The highest natural point is Whiskey Peak at 1,670 feet ...
The flora and fauna of the ridge seem more closely related to the Tennessee hills to the east than to the Ozark Mountains to the west. This unique habitat has been protected by the establishment of several state and city parks, the St. Francis National Forest, recreational lakes, and in 1997 a national scenic byway, the Crowley's Ridge Parkway.
The half of the state south of Little Rock is apter to see ice storms. Arkansas's record high is 120 °F (49 °C) at Ozark on August 10, 1936; the record low is −29 °F (−34 °C) at Gravette, on February 13, 1905. [16] Arkansas is known for extreme weather and frequent storms.
The Piney Woods is a temperate coniferous forest terrestrial ecoregion in the Southern United States covering 54,400 square miles (141,000 km 2) of East Texas, southern Arkansas, western Louisiana, and southeastern Oklahoma.
The Leatherwood Wilderness, a 16,838 acres (68.14 km 2) federally designated wilderness area, is located within the Ozark-St. Francis National Forest in Arkansas is the largest wilderness area in Arkansas.
Rift sawing is a woodworking process that aims to produce lumber that is less vulnerable to distortion than flat-sawn lumber. Rift-sawing may be done strictly along a log's radials—perpendicular to the annular growth ring orientation or wood grain —or as part of the quarter sawing process.
Accommodation zones may be located where older crustal structures intersect the rift axis. In the Gulf of Suez rift, the Zaafarana accommodation zone is located where a shear zone in the Arabian-Nubian Shield meets the rift. [6] Rift flanks or shoulders are elevated areas around rifts. Rift shoulders are typically about 70 km wide. [7]