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Equus Beds
The Equus Beds Aquifer is a distinct part the High Plains Aquifer System and is a principal municipal aquifer in south-central Kansas, underlying Hutchinson, Kansas, Hutchinson, McPherson, Kansas, McPherson, Newton, Kansas, Newton, and Wichita, Kansas, Wichita. While generally illustrated as an extension of the Ogallala Formation, Miocene-Pliocene Ogallala Aquifer, this aquifer is composed of alternating beds of sand and clay mostly deposited in the later Pleistocene and was named the "McPherson Equus Beds" for having characteristic Evolution of the horse#Modern horses, modern horse fossils. The aquifer beds overlie, and are partially recharged by the Dakota Aquifer and certain Permian aquifers. These particular High Plains Aquifers are also known sources of widespread natural salt contamination, including portions of the Equus Beds, which can be aggravated by human extraction of water as well as by Wellington Formation#Hutchinson Salt, salt mining and oil wells. Further reading ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquifer
An aquifer is an underground layer of water-bearing material, consisting of permeability (Earth sciences), permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of aquifers is called ''hydrogeology''. Related concepts include aquitard, a bed (geology), bed of low permeability along an aquifer, and aquiclude (or ''aquifuge''), a solid and impermeable region underlying or overlying an aquifer, the pressure of which could lead to the formation of a confined aquifer. Aquifers can be classified as saturated versus unsaturated; aquifers versus aquitards; confined versus unconfined; isotropic versus anisotropic; porous, karst, or fractured; and transboundary aquifer. Groundwater from aquifers can be sustainably harvested by humans through the use of qanats leading to a well. This groundwater is a major source of fresh water for many regions, althoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution Of The Horse
The evolution of the horse, a mammal of the family Equidae, occurred over a geologic time scale of 50 million years, transforming the small, dog-sized, forest-dwelling '' Eohippus'' into the modern horse. Paleozoologists have been able to piece together a more complete outline of the evolutionary lineage of the modern horse than of any other animal. Much of this evolution took place in North America, where horses originated but became extinct about 10,000 years ago, before being reintroduced in the 15th century. The horse belongs to the order Perissodactyla ( odd-toed ungulates), the members of which one will share hooved feet and an odd number of toes on each foot, as well as mobile upper lips and a similar tooth structure. This means that horses share a common ancestry with tapirs and rhinoceroses. The perissodactyls arose in the late Paleocene, less than 10 million years after the Cretaceous–Paleogene extinction event. This group of animals appears to have been origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erasmus Haworth
Erasmus Haworth (1855–1932) was an American geologist. Born on a farm near Indianola, Iowa, he graduated from the University of Kansas with a Bachelor of Science degree in 1881 and received a master's degree there in 1884. He received his doctoral degree from Johns Hopkins University in 1888. He taught at various colleges, and was appointed professor of geology and mineralogy at the University of Kansas in 1892, where he remained until 1920. Today, Haworth Hall, a building named after Haworth, houses the Division of Biological Sciences at the University of Kansas. He organized the Kansas Geological Survey in 1894, and wrote several volumes of the survey from 1896 to 1904. He was state geologist from 1894 to 1915. In this position, he was instrumental in finding an ample water supply for Wichita and Newton. In 1903, he collected a sample of gas from a well drilled in Dexter, Kansas and had it analyzed by colleagues in the university's Department of Chemistry. The sample was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Well
An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A well that is designed to produce only gas may be termed a gas well. Wells are created by drilling down into an oil or gas reserve and if necessary equipped with extraction devices such as pumpjacks. Creating the wells can be an expensive process, costing at least hundreds of thousands of dollars, and costing much more when in difficult-to-access locations, e.g., offshore. The process of modern drilling for wells first started in the 19th century but was made more efficient with advances to oil drilling rigs and technology during the 20th century. Wells are frequently sold or exchanged between different oil and gas companies as an asset – in large part because during falls in the price of oil and gas, a well may be unproductive, but if prices rise, even low-production wells may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wellington Formation
The Wellington Formation is an Cisuralian, Early Permian geologic Formation (geology), formation in Kansas and Oklahoma. The formation's Strataca, Hutchinson Salt Member is more recognized by the community than the formation itself, and the salt is still mined in central Kansas. The Wellington provides a rich record of Permian insects and its beddings provide evidence for reconstruction of tropical paleoclimates of the Late Paleozoic icehouse, Icehouse Permian with the ability in cases to measure the passage of seasons. Tens of thousands of insect fossil recovered from the Wellington shales are kept in major collections at the Harvard Museum of Comparative Zoology and Yale Peabody Museum of Natural History. Description Initially described as marine shales, the thick Wellington appears mostly as dark gray, thinly bedded soft rock, much of it terrestrial, with sediments from fresh water ponds and salt lakes. There are several variable beds of anhydrite and gypsum and the central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
