Ogallala formation
The Ogallala Formation of Tertiary (Pliocene) age is the principal aquifer in the Southern High Plains of western Texas and eastern New Mexico. This heavily pumped aquifer supplies practically all the water used for irrigation, municipal, industrial (except oil-field repressuring), and domestic purposes. Although the ground water in the Ogallala Formation in the Southern High Plains is common ...The primary water-bearing unit in this high plains aquifer is the Miocene Age Ogallala formation. Up to 700 feet thick in some areas, this formation contains poorly sorted silts, sands, and gravels.
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The Late Devonian Duvernay Formation is an organic-rich, fine-grained carbonaceous unit that is stratigraphically equivalent to the Muskwa Formation in the Horn River Basin (Switzer et al., 1994). Multiple depositional cycles occurred over a large area (Figure 7 ), coeval with the growth and development of extensive carbonate reef …The Ogallala Formation of Tertiary (Pliocene) age is the principal aquifer in the Southern High Plains of western Texas and eastern New Mexico. This heavily pumped aquifer supplies practically all the water used for irrigation, municipal, industrial (except oil-field repressuring), and domestic purposes. Although the ground water in the Ogallala Formation in the Southern High Plains is common ...Ogallala Formation..-----_ 29. CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES GEOLOGY AND GROUND-WATER RESOURCES IN EASTERN CHEYENNE AND KIOWA COUNTIES, COLORADO By AjjNOii) 3. BOETTCHEE ABSTRACT The principal source of ground water in eastern Cheyenne and Kiowa Coun ties, Colo., is the Ogallala Formation of Pliocene age. ...Ogallala Formation: Oolagah Chert: R anging in color from varying shades of grays to bluish gray with banding or mottling . Northeastern Oklahoma: Oolagah Limestone Formation, Tulsa Group : Osage Chert Osage Undifferentiated Chert: Ranges from a white to light gray or light brown. Occasionally gray to dark gray mottling is present.In most areas, new water isn't taking the place of what's pumped out of the Ogallala. Between 1950 and 2013, the water levels dropped over 250 feet in an Ogallala well near Lubbock, Texas. The aquifer has seen more moderate declines elsewhere, but it's causing problems for cities, well owners and irrigators alike.Ogallala: Formation: Ogallala Formation: Aquifer Type: Unconfined: Well Depth (ft below land surface) 470.00: Instrument: Transducer: Transmission: Satellite: Groundwater Conservation District: Panhandle GCD: Groundwater Management Area: 1: Estimated Land Elevation (ft above sea level) 3412 Location (lat, long) (35.2686111, -101.3019444 ...The Ogallala is a "very fragile ecosystem, literally made of sand," she says. "To have a pipeline crossing that region is just mind-boggling." ... "'I've spent my career drilling holes to and through the Ogallala Formation. I've probably seen as much of the Ogallala as anybody,' he says on camera. 'There's a misconception that ...Ogallala Formation (Pliocene) at surface, covers 36 % of this area. CIMARRON- Generally semiconsolidated clay, silt, sand, gravel, and caliche 0 to 400 feet thick. BEAVER- Interbedded sand, siltstone, clay, gravel lenses, and thin limestone. Caliche common near surface but occurrence is not limited to the surface.As streams deposited the sediment, it formed into a giant wedge called the Ogallala Formation, which is the foundation for the High Plains. Mount Sunflower is southwest of Goodland and northwest of Sharon Springs. Although it is on private property, the landowners allow access to visitors aspiring to conquer its lofty summit and gaze over the ...Ogallala is a city in and the county seat of Keith County, Nebraska, United States. The population was 4,737 at the 2010 census.In the days of the Nebraska Territory, the city was a stop on the Pony Express and later along the transcontinental railroad.The Ogallala Formation that carries the Ogallala Aquifer was named after the city.The Ogallala Formation was named by Darton in 1899 from outcrops in Keith County, Nebraska. These beds had previously been referred to as part of the Loup Fork Formation, now an obsolete term. Darton considered the Ogallala to be equivalent, at least in part, to the "mortar beds," "tertiary grit," and "magnesia beds" of Kansas. There are at least seven major aquifer systems in Nebraska. By far, the High Plains/Ogallala aquifer is the largest in terms of volume of water in storage and withdrawals for irrigation. Several secondary aquifers exist in areas outside of the High Plains aquifer, providing water for irrigation, municipal supplies, and domestic use in parts of far western and far eastern Nebraska.In 2007, the market value from the Ogallala region's agricultural products totaled roughly $35 billion. However, well outputs in the central and southern parts of the aquifer are declining due to excessive pumping, and prolonged droughts have parched the area, bringing back Dust Bowl-style storms, according to the NCA4. ...The Ogallala Group (Formation status in the central HP A of Kansas) is regionally the principal water-bearing unit of the aquifer and consists mostly of superposed gravel, sand , silt, and clay ...Four recharge tests were conducted by injecting water from playa lakes through wells into the Ogallala Formation. Injection was by gravity flow and by pumping under pressure. At one site, 34-acre feet of water was injected by gravity and produced a significant increase in yield of the well. At a second site, gravity injection of only 0.58 acre ...The Ogallala Formation is the most extensive hydrogeological unit, which makes up about three-fourths of the total High Plains region (McMahon et al., 2007). The unsaturated-zone thickness ranges from 0 to approximately 152m and averages about 30.5m."The Ogallala formation is believed to be a stratigraphic unit and to be continuous from the type locality near Ogallala station in western Nebraska .. ." Elias (1931, p. 135) remeasured the beds outcropping northeast of Ogallala, Nebraska, and gave corrected footages. Hibbard (1933) and Hesse (1935) were first to report the oc- ...The Ogallala Formation was named by Darton (1899) from exposures that he later (Darton, 1920) designated as being near Ogallala Station in western Nebraska. Three members of the Ogallala are recognized by the State Geological Survey of Kansas: the Valentine Member at the base, the Ash Hollow Member in the middle, and the Kimball Member at the ...The Ogallala aquifer is a sandstone formation that underlies some 583,000 square kilometers of land extending from northwestern Texas to southern South Dakota. Water from rains and melting snows has been accumulating in the Ogallala for the past 30,000 years. Estimates indicate that the aquifer contains enough water to fill Lake Huron, but ...The Ogallala formation, of Pliocene age, which underlies the upland plain, was deposited on the eroded surface of the Cretaceous rocks. The configuration of this surface perhaps was influenced by regional structure. Test drilling indicated distinct pre-Ogallala drainage channels trending generally northeast in the northern upland and …The northern boundary of the Raton section is placed somewhat indefinitely at the northern limit of the area injected by igneous dikes. The eastern boundary of the Raton section is at the eastern …The Cenozoic (Pliocene) Ogallala Formation covers about 174,000 square miles from Texas to South Dakota. 4 While it's only 20 to 40 feet thick in some locations, it increases to over 700 feet across much of the Great Plains. Igneous and metamorphic cobbles in the basal conglomerate of the Ogallala layer are sourced from the Rocky Mountains ...The land-atmosphere coupling strength diagnostic for boreal summer (the ⍀ difference, dimensionless, describing the impact of soil moisture on precipitation), averaged across the 12 models ...
The High Plains aquifer system (hereinafter referred to as the "Ogallala aquifer"), contained within the Ogallala Formation in Texas, is the shallowest aquifer in the study area and is the primary source of water for agriculture and municipal supply in the areas managed by the UWCDs. Groundwater withdrawals from deeper aquifers (primarily ...Sampled Aquifer: Ogallala Formation Analyzed Lab: Texas Department of Health Collection Entity: Texas Water Development Board Reliability: Sampled using TWDB protocols Friday, October 20, 2023 State Well Number 12-01-617 Page 7 of 13 Texas Water Development Board (TWDB) Groundwater Database (GWDB) Well Information Report for State Well …The Ogallala Formation unconformably overlies Permian, Triassic, Jurassic, and Cretaceous strata and consists primarily of heterogeneous sequences of coarse-grained sand and gravel in the lower part grading upward into fine clay, silt, and sand. Water-bearing areas of the Ogallala Formation areThe Ogallala is composed primarily of sand, gravel, clay, and silt deposited during the Tertiary Period. Ground water, under water-table conditions, moves slowly through the Ogallala Formation in a southeastward direction toward the caprock edge or eastern escarpment of the High Plains.
The Tertiary Ogallala Formation directly overlies the Permian red beds, although Triassic sedimentary rocks are present in the southwestern part of Lake Meredith NRA. The approximately 10-million-year-old Ogallala Formation is much younger than the underlying rocks, and sits atop a regional uncomformity, or period of missing time. ...The Ogallala formation of Tertiary (Pliocene) age unconformably overlies the Niobrara throughout these two counties (Pl. 5B). The Ogallala crops out in several places, the best exposures being along Ladder and White Woman Creeks. The undissected plains surface in the area is mantled by the wind-blown silt (loess) of the Sanborn formation of ...…
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Beneath the caliche layer lies fluvial depos. Possible cause: Emphasis is on geomorphic processes active in The topography of the base of the .
the contact between the Ogallala and pre-Ogallala (probably Brule) Formations exposed on the east side of Rush Creek. Beds of dilt, sand, siltstone, and volcanic ash in the area locally dip to the northwest at angles of up to 8g0. The contact between the two formations cannot be seen on the west side ofThe silicified rocks of the Ogallala formation are grouped, on the basis of their texture, color, degree of cementation, and predominant lithology of the original deposit, into two major categories--here termed quartzite and chert--and several special types of minor extent and importance. ... The Ogallala quartzite in the region north of Texas ...
ACT NOW CO FY23 Forest Health. The Ogallala Aquifer, also known as the High Plains Aquifer, is a vast yet shallow underground water table aquifer located beneath the Great Plains in the United States. It is one of the world's largest aquifers and covers an area in portions of eight states, which include Colorado, South Dakota, Nebraska, Wyoming ...Ogallala Group or Formation. Silt, sand, sandstone, gravel and conglomerate. Predominantly interfingered fine- to coarse grained, poorly sorted, arkosic, fluvial deposits of light-gray, light-olive-gray, and grayish-green calcareous silt and sand, and locally poorly consolidated conglomerate, sandstone, and siltstone. State. Nebraska.The Ogallala aquifer is one of Texas' major aquifer systems. This study focused on the part of the Ogallala aquifer that underlies 18 of the 21 counties of the Panhandle Water Planning Area (PWPA). In the past 50 years, water-level drawdown in parts of the unconfined aquifer has been as much as 190 ft, or about 4 ft/yr. Pumping rates for the ...
Deposits of the Ogallala Formation lie to the north and c Stratigraphy. The Ogallala of northern Kansas meets all the stated requirements of a formation (Ashley and others, 1933). Although it contains a wide range of lithologic types, it is essentially a continuous blanket of alluvium that may be regarded as "homogeneous in its heterogeneity"; it is considered a conformable sequence, as the multitude of minor diastems it contains are typical of this ... this region, the Ogallala crops out in steep escarpments alongthOgallala Group or Formation (Miocene) at surface, covers < 0.1 Ogallala Formation (Pliocene) at surface, covers 6 % of this area. CIMARRON- Generally semiconsolidated clay, silt, sand, gravel, and caliche 0 to 400 feet thick. BEAVER- Interbedded sand, siltstone, clay, gravel lenses, and thin limestone. Caliche common near surface but occurrence is not limited to the surface. Caliche accounts for most of ... The Ogallala is nearly horizontal, but tilts very gr The High Plains aquifer consists of one or more hydraulically connected geologic units of late Tertiary or Quaternary age, underlain by bedrock units that range in age from Permian to Tertiary. The High Plains aquifer is divided into the northern, central, and southern High Plains regions. The northern High Plains aquifer underlies parts of ...Location ofwells in the Ogallala aquifer sampled for water quality, 1989-1992 . Geologic units directly underlying the Ogallala Formation .. Dissolved-solidscontent in water ofthe Ogallala aquifer . Chloride content in water ofthe Ogallala aquifer . Sulfate content in water ofthe Ogallala aquifer .. Fluoride content in water ofthe Ogallala ... Ogallala Formation White River Fm Lower part Cgl Brule Fm Chadron Fm WIf areas of the Ogallala were exposed to leaks from the ACT NOW CO FY23 Forest Health. The Ogalla The member names for the Ogallala Formation (including the Valentine, Ash Hollow, and Kimball) in Kansas of Zeller (1968) are abandoned. The Ogallala Formation in Kansas includes strata of Miocene and earliest Pliocene age, revising earlier correlation to the Pliocene only (Zeller, 1968).OGALLALA AQUIFER OF THE TEXAS PANHANDLE USING CONCEPTUAL MODELS By Robert Glen Green, III A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY West Texas A&M University Canyon, Texas December 2016 . ii Approved: ... Explore Real-time Water Data Using New Products from USGS TXWSC View Pawnee Buttes - Ogallala Formation (GC1EHCK) was created by Me & Bucky on 7/25/2008. It's a Other size geocache, with difficulty of 2, terrain of 2.5. It's located in Colorado, United States. This EarthCache is found on the Pawnee National Grassland, a part of the Arapaho & Roosevelt National Forests and Pawnee National Grassland, and is ... Sampled Aquifer: Ogallala Formation Analyzed La[Ogallala Group or Formation (Miocene) at surface, On the western side of the Ogallala Formation (and thus the Stratigraphy. The Ogallala of northern Kansas meets all the stated requirements of a formation (Ashley and others, 1933). Although it contains a wide range of lithologic types, it is essentially a continuous blanket of alluvium that may be regarded as "homogeneous in its heterogeneity"; it is considered a conformable sequence, as the multitude of minor diastems it contains are typical of this ...