Geology topics
Research about Arkansas
Source-linked reports with geographic coverage including Arkansas.
Geologic map of Russellville West quadrangle, Pope and Yell Counties, Arkansas
No abstract available.
Water resources of Jackson and Independence Counties, Arkansas
The present (1965) water use in Jackson and Independence Counties is about 55.6 million gallons per day, and quantities sufficient for any foreseeable use are available. Supplies for the large-scale uses--municipal, industrial, and irrigation--can best be obtained from wells in the Coastal Plain and from streams in the highlands. Wells in the Coastal Plain will yield 1,000-2,000 gallons of water per minute when screened at depths from 100 to 150 feet in alluvial sand and gravel of Quaternary age. The water will require treatment for the removal of iron and the reduction of hardness to be suitable for municipal and industrial uses. Wells in the highlands generally yield less than 50 gallons per minute of water that is of good quality, though hard. The dependable flow of .the White River at Newport is about 4.2 billion gallons per day. The dependable 'base flows of the small streams tributary to the White River in the Salem Plateau and Springfield Plateau sections range from 0.25 to 5 million gallons per day, and the dependable flow of Polk Bayou at Batesville is about 21 million gallons per day. These streams can be utilized for water supply with little or no artificial storage required. Streams in the Boston Mountains section and in the Arkansas Valley section recede to very low flow or to no flow during extended dry periods, but dependable, supplies can be obtained from these streams 'by construction of storage facilities Water from all the highland streams is af excellent chemical quality except that it generally is hard.
Coal in the Dardanelle Reservoir area, Yell, Pope, Logan, Johnson, and Franklin Counties, Arkansas
No abstract available.
Aeromagnetic prospecting for bauxite deposits in the Mississippi embayment, Arkansas and Missouri
No abstract available.
Flood of July 16-17, 1963, in vicinity of Hot Springs, Arkansas
On July 16, 1963, the city of Hot Springs had severe flooding, which, from all reports, was exceeded only by a flood that occurred in May 1923. The storm, which caused the flooding, was centered in the vicinity of Hot Springs and covered an area including most of Garland County and parts of Hot Spring and Saline Counties. The towns of Owensville, Jessieville, Pleasant Hill, and Malvern were on the outer fringe of the storm area. Flood damage exceeded $2 million in the storm area.
Aeromagnetic map of the Magnet Cove area, Hot Spring County, Arkansas
No abstract available.
Studies of artificial recharge in the Grand Prairie region, Arkansas; environment and history
No abstract available.
Floods in Arkansas, magnitude and frequency
This report presents methods by which the magnitude and frequency of expected floods for most streams in Arkansas may be determined. Flood data have been used to define flood-frequency curves applicable to the State. Composite frequency curves have been defined showing the relation of the mean annual flood to floods having recurrence intervals of 1. 2 to 50 years. Other curves express the relation of the mean annual flood to drainage basin characteristics. For the northern part of the State, it was found that the slope of the composite frequency curve varies with drainage area size, and an adjustment curve was drawn for use in conjunction with the composite curve for this area. By combining data from the composite and mean annual flood curves a flood-frequency curve may be drawn for any stream in Arkansas, not materially affected by works of man, within the limits of drainage area and recurrence interval defined by base data.
Described sections of rocks of Chester and Morrow age in Newton and Searcy counties, Arkansas
Since 1949, the U. S. Geological Survey, with the cooperation of the Arkansas Geological and Conservation Commission, has been engaged in stratigraphic investiqations in northern Arkansas to aid in the search for oil and gas. Seven reports of these investigations, including both surface and subsurface studies, have been completed (Lantz, 1950; Maher and Lantz, 1952, 1953a, 1953b; Glick and Frezon, 1953; Sheldon, 1954; Frezon and Glick, in press). This report, which was completed in 1955, presents the detailed stratigraphic sections used in correlating and mapping rocks of Chester and Morrow age in and adjacent to the Mount Judea and Snowball quadrangles in Newton and Searcy Counties. The locations of the sections are shown in figure 1 and are described in relation to topographic and cultural features shown on the topographic maps of the Mount Judea, Snowball, and Marshall, Arkansas, quadrangles and the Harrison, Arkansas-Missouri, quadrangle. A generalized cross section through 8 of the measured sections alined on the base of the Atoka formation is shown in figure 2.
Memorandum on availability of ground water for irrigation in certain areas of eastern Arkansas
This memorandum was prepared in response to a request from the Soil Conservation Service, Little Rock, Ark., for information on the future prospects of irrigation of rice with water from wells in certain areas in the basins of the Bache, St. Francis, and L'Anguille Rivers, Big and Dials Creeks, and Bayou Meto and the Bouef-Tensas-Macon basin. It was prepared as a aprt of the Statewide ground-water investigation in cooperation with the Arkansas Geological and Conservation Commission ad the University of Arkansas. The specific areas and water requirement specified by the Soil Conservation Service are listed in the appendix.
Preliminary geologic map of the Waldron quadrangle and adjacent areas, Scott County, Arkansas
No abstract available.
Map of bedrock geology of Magnet Cove igneous area, Hot Spring County, Arkansas
Explore the source record for details and available documents.
Niobium (columbium) and titanium at Magnet Cove and Potash Sulphur Springs, Arkansas
This work was done because niobium (columbium) has been found in several of the minerals and rocks of the Magnet Cove and Potash Sulphur Springs areas. Niobium is in demand for use in high-temperature and non-creep steels. The Magnet Cove and Potash Sulphur Springs areas are in central Arkansas between Malvern and Hot Springs. They are underlain by similar alkaline igneous complexes consisting of nepheline syenite, more basic alkaline rocks, and calcite rock or carbonatite. The igneous rocks intrude Paleozoic sedimentary rocks and are truncated by a Late Cretaceous erosion surface. At Magnet Cove deposits of rutile (TiO 2) occur within the igneous complex; two deposits of brookite (TiO 2 ) occur in quartzite of the Arkansas novaculite formation of probable Devonian and Mississippian age, near the margin of the complex. Perovskite (calcium titanate) occurs in several places in the igneous complex. Niobium is present in rutile, brookite, and perovskite, and also probably in other minerals not yet analyzed. In order to determine the distribution and average content of niobium in the larger titanium deposits, drill core and channel samples were analyzed for niobium, titanium, and other elements; and average figures were calculated. Concentrates and single crystals were also analyzed. Material from drill cores of perovskite-bearing magnetite-pyroxene rock on the Mo-Ti Corporation property was studied and analyzed. The Kimsey calcite quarry area was mapped, and channel samples and single crystals were analyzed. Channel samples from trenches on the Wilson prospect at Potash Sulphur Springs were analyzed. The areas studied contain large resources of titanium and niobium, of low grade. The major results of the analytical work are summarized in the following table.