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The geology of Arkansas includes deep 1.4 billion year old igneous crystalline basement rock from the Proterozoic known only from boreholes, overlain by extensive sedimentary rocks and some volcanic rocks. The region was a shallow marine, riverine and coastal environment for much of the early Paleozoic as multi
The land is adjacent to the Mississippi River and generally flat, fertile, swampy lands sometimes called the Arkansas delta. This region is sparsely populated, with an economy primarily driven by agriculture. The western side of Southeast Arkansas includes the Piney Woods, a region known for dense pine and cypress forests. Silviculture and ...
Level III subdivides the continent into 182 ecoregions; of these, seven lay partly within Arkansas's borders. Level IV is a further subdivision of Level III ecoregions. There are 32 Level IV ecoregions in Arkansas, [2] many of which continue into adjacent areas in the neighboring states of Oklahoma, Mississippi, Missouri, Louisiana, Tennessee ...
A rural Ozarks scene. Phelps County, Missouri The Saint Francois Mountains, viewed here from Knob Lick Mountain, are the exposed geologic core of the Ozarks.. The Ozarks, also known as the Ozark Mountains, Ozark Highlands or Ozark Plateau, is a physiographic region in the U.S. states of Missouri, Arkansas, and Oklahoma, as well as a small area in the southeastern corner of Kansas. [1]
Crowley's Ridge (also Crowleys Ridge) is a geological formation that rises 250 to 550 feet (170 m) above the alluvial plain of the Mississippi embayment in a 150-mile (240 km) line from southeastern Missouri to the Mississippi River near Helena, Arkansas.
Region: Arkansas: Country: United States ... The Bloyd Formation, or Bloyd Shale, is a geologic formation in Arkansas. ... In the eastern parts of the Ozarks in ...
The Arkansas River Valley, also known as the Arkansas Valley, is a region in Arkansas defined by the Arkansas River in the western part of the state. Generally defined as the area between the Ozark and Ouachita Mountains, [1] the River Valley is characterized by flat lowlands covered in fertile farmland and lakes periodically interrupted by high peaks.
Pages in category "Regions of Arkansas" The following 14 pages are in this category, out of 14 total. This list may not reflect recent changes. A. Ark-La-Tex;