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USGS Pinnacle Mountain. Pinnacle Mountain is a 1,011-foot (308 m) summit and the second-highest natural point in Pulaski County, Arkansas, United States; it is also the primary attraction of the 2,356-acre (953 ha) Pinnacle Mountain State Park. [2] Located in the foothills of the Ouachita Mountains approximately 13 miles (21 km) northwest of ...
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards ...
The geography of Arkansas varies widely. The state is covered by mountains, river valleys, forests, lakes, and bayous in addition to the cities of Arkansas. Hot Springs National Park features bubbling springs of hot water, formerly sought across the country for their healing properties. [1][2] Crowley's Ridge is a geological anomaly rising ...
Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.
A map of the McClellan–Kerr Arkansas River Navigation System. The McClellan–Kerr Arkansas River Navigation System (MKARNS) is part of the United States inland waterway system originating at the Tulsa Port of Catoosa and running southeast through Oklahoma and Arkansas to the Mississippi River. The total length of the system is 445 miles (716 ...
The King's River Natural Area, established in 1979, is located on the upper Kings River east of the hamlet of Boston. The Natural Area includes 1,059 acres (429 ha) and features a two mile hiking trail which leads to Kings River Falls, a scenic 6-feet (2 mt) high waterfall. The Natural Area is located in a rugged mountain area.
The Arkansas Geological Survey (AGS), formerly the Arkansas Geological Commission (AGC), is a government agency of the State of Arkansas. It is responsible for the investigation of the geology, geologic processes, and geologic resources within the state. It encourages the considered management and utilization of the state's mineral, fossil-fuel ...
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-cellular life became commonplace.
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