|
Blanco Formation
The Blanco Formation, originally named the Blanco Canyon Beds, is an early Pleistocene geologic formation of clay, sand, and gravel whitened by calcium carbonate cementation and is recognized in Texas and Kansas. After the Ogallala had lain exposed for some time since the Neogene, developing a thick caliche petrocalcic horizon under the surface, deposition of sand and gravel by wind and east-flowing streams resumed to lesser extent during the early Pre-Illinoian glaciation cycles of the Pleistocene. As the weathering and erosion of the exposed Ogallala, rich in calcium carbonate, contributed heavily to the formation, the resulting material is white (blanco). This gave the name to Blanco Canyon, which in turn is the type locality for the Blanco Formation. In Texas, the unit covers the extent of the Llano Estacado, attaining a thickness of . Exceptionally flat, it is conjectured that the limestone beds in the Texas region formed within broad, shallow lakes. The Blanco Formati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Blanco
Mount Blanco is a small white hill — an erosional remnant — located on the eastern border of the Llano Estacado within Blanco Canyon in Crosby County, Texas. With Blanco Canyon, it is the type locality of the Blanco Formation of Texas and Kansas, as well as the Blancan fauna, which occurs throughout North America. Geology The term "Blanco Canyon beds", later shortened to "Blanco beds", was first applied to this formation in 1890 by William F. Cummins of the Geological Survey of Texas. The Blanco beds are considered to be of lacustrine origin – deposited in a Pleistocene lake basin set upon the Ogallala Formation of Pliocene age, which underlies the upper surface sediments of the Llano Estacado. The thickness of the Blanco beds varies from around thick. The formation mainly consists of light-gray, fine-grained mudstone, sandstone, and some conglomerate. These light-colored sediments contrast sharply with the locally rust-colored sediments of the Ogallala Formation. Fossi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-Illinoian
The Pre-Illinoian Stage is used by Quaternary geologists for the early and middle Pleistocene glacial and interglacial periods of geologic time in North America from ~2.5–0.2 Ma (million years ago). North America As the oldest stage in the North American regional subdivision of the Quaternary, the Pre-Illinoian precedes the Illinoian Stage. Researchers have identified 11 distinct glacial stages during the Pre-Illinoian Stage. The Pleistocene prior to the Illinoian stage had previously been subdivided into the Nebraskan, Aftonian, Kansan, and Yarmouthian stages (ages). However, detailed studies of these stages revealed that the assumptions and criteria on which they were defined proved to be wrong to such a point that these stages became meaningless in terms of the actual glacial–interglacial record. For example, instead of two glaciations having occurred prior to the Illinoian Stage, researchers found that 11 distinct glaciations had occurred. In addition, what was p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Kansas
Paleontology in Kansas refers to paleontological research occurring within or conducted by people from the U.S. state of Kansas. Kansas has been the source of some of the most spectacular fossil discoveries in US history. The fossil record of Kansas spans from the Cambrian to the Pleistocene. From the Cambrian to the Devonian, Kansas was covered by a shallow sea. During the ensuing Carboniferous the local sea level began to rise and fall. When sea levels were low the state was home to richly vegetated deltaic swamps where early amphibians and reptiles lived. Seas expanded across most of the state again during the Permian, but on land the state was home to thousands of different insect species. The popular pterosaur ''Pteranodon'' is best known from this state. During the early part of the Cenozoic era Kansas became a savannah environment. Later, during the Ice Age, glaciers briefly entered the state, which was home to camels, mammoths, mastodons, and saber-teeth. Local fossils may h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Kansas
This article contains a list of fossil-bearing stratigraphic units in the state of Kansas, U.S. Sites See also * Paleontology in Kansas References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Kansas Kansas Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Kansas Kansas geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Texas
Paleontology in Texas refers to paleontological research occurring within or conducted by people from the U.S. state of Texas. Author Marian Murray has remarked that "Texas is as big for fossils as it is for everything else." Some of the most important fossil finds in United States history have come from Texas. Fossils can be found throughout most of the state. The fossil record of Texas spans almost the entire geologic column from Precambrian to Pleistocene. Shark teeth are probably the state's most common fossil. During the early Paleozoic era Texas was covered by a sea that would later be home to creatures like brachiopods, cephalopods, graptolites, and trilobites. Little is known about the state's Devonian and early Carboniferous life. However, evidence indicates that during the late Carboniferous the state was home to marine life, land plants and early reptiles. During the Permian, the seas largely shrank away, but nevertheless coral reefs formed in the state. The rest of Texas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Texas
This article contains a list of fossil-bearing stratigraphic units in the state of Texas, U.S. Sites See also * Paleontology in Texas References * * {{DEFAULTSORT:Fossiliferous stratigraphic units in Texas Fossil Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ... Texas geography-related lists United States geology-related lists Geology of Texas .Stratigraphic units ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nebraska
Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the southwest; and Wyoming to the west. It is the only triply landlocked U.S. state. Indigenous peoples, including Omaha, Missouria, Ponca, Pawnee, Otoe, and various branches of the Lakota ( Sioux) tribes, lived in the region for thousands of years before European exploration. The state is crossed by many historic trails, including that of the Lewis and Clark Expedition. Nebraska's area is just over with a population of over 1.9 million. Its capital is Lincoln, and its largest city is Omaha, which is on the Missouri River. Nebraska was admitted into the United States in 1867, two years after the end of the American Civil War. The Nebraska Legislature is unlike any other American legislature in that it is unicameral, and its members are elected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holdrege Formation
Holdrege is a city in Phelps County, Nebraska, United States. The population was 5,495 at the 2010 census. It is the county seat of Phelps County. The Nebraska Prairie Museum is located in Holdrege. History Holdrege was established in 1883 when the railroad was extended to that point. It was named for George W. Holdrege, a railroad official. Holdrege was designated county seat in 1884. Holdrege was settled primarily by immigrants from Sweden in the 1880s and was named after George W. Holdrege, general manager of the Chicago, Burlington, and Quincy Railroad Company. He constructed most of the line's mileage in Nebraska, including a section through this small settlement in Phelps County. On December 10, 1883, the first train arrived in Holdrege, a little pioneer town inhabited by 200 people. In 1884, a campaign was started to move the county seat from Phelps Center to Holdrege, and an election was scheduled for October. By that time, the town had acquired a block of ground on w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fullerton Formation
Fullerton may refer to: Places Australia * Fullerton Cove, New South Wales Canada * Cape Fullerton, Nunavut India * Fullerton Securities, a financial planning and wealth management product company United States * Fullerton, California, a city in Orange County ** California State University, Fullerton (commonly CSUF), part of the California State University System *** Fullerton Arboretum, a botanical-garden located on the north-east corner of the CSUF campus. ** Fullerton College, the oldest continuously operating community college in California ** Fullerton Union High School, a high school created in 1893 ** Fullerton (Amtrak station), a passenger rail and bus station ** Fullerton Municipal Airport, a Regional Relief airport ** Fullerton Police Department, established in 1904 ** Fullerton Public Library, established in 1906 * Fullerton, Louisiana * Fullerton, Maryland, an unincorporated community in Baltimore County * Fullerton, Nebraska, a city in Nance County * Fullerton Town ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llano Estacado
The Llano Estacado (), sometimes translated into English as the Staked Plains, is a region in the Southwestern United States that encompasses parts of eastern New Mexico and northwestern Texas. One of the largest mesas or tablelands on the North American continent, the elevation rises from in the southeast to over in the northwest, sloping almost uniformly at about . Naming The Spanish name is often interpreted as meaning "Staked Plains", although "stockaded" or "palisaded plains" have also been proposed, in which case the name would derive from the steep escarpments on the eastern, northern, and western periphery of the plains. Leatherwood writes that Francisco Coronado and other European explorers described the Mescalero Ridge on the western boundary as resembling "palisades, ramparts, or stockades" of a fort, but does not present the original Spanish. In ''Beyond the Mississippi'' (1867), Albert D. Richardson, who traversed the region from east to west in October 1859, wrote ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (geology)
Type locality, also called type area, is the locality where a particular rock type, stratigraphic unit or mineral species is first identified. If the stratigraphic unit in a locality is layered, it is called a stratotype, whereas the standard of reference for unlayered rocks is the type locality. The term is similar to the term type site in archaeology or the term type specimen in biology. Examples of geological type localities Rocks and minerals * Aragonite: Molina de Aragón, Guadalajara, Spain * Autunite: Autun, France * Benmoreite: Ben More (Mull), Scotland * Blairmorite: Blairmore, Alberta, Canada * Boninite: Bonin Islands, Japan * Comendite: Comende, San Pietro Island, Sardinia * Cummingtonite: Cummington, Massachusetts * Dunite: Dun Mountain, New Zealand. * Essexite: Essex County, Massachusetts, US * Fayalite: Horta, Fayal Island, Azores, Portugal * Harzburgite: Bad Harzburg, Germany * Icelandite: Thingmuli (Þingmúli), Iceland * Ijolite: Iivaara, Kuusamo, Finl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blanco
Blanco (''white'' or ''blank'' in Spanish) or Los Blancos may refer to: People *Blanco (surname) Fictional characters *Blanco, a hobbit in J. R. R. Tolkien's Middle-earth *Blanco Webb, character in the BBC sitcom ''Porridge'' * El Blanco, albino graboid from the Tremor movie and television series Places United States *Blanco, California (other), multiple places with the name *Blanco, Ohio, an unincorporated community *Blanco, Oklahoma, an unincorporated community *Blanco, New Mexico, in San Juan County *Blanco, Texas, a city *Blanco County, Texas *Mount Blanco, Texas *Blanco Canyon, Texas *Blanco Creek, Texas Other countries *Los Blancos, Salta, Argentina * Blanco, Dominican Republic, a district in the Hermanas Mirabal province, Dominican Republic * Blanco, Western Cape, in South Africa Multiple places *Blanco River (other), places with that name *Cabo Blanco (other), places with that name *Cape Blanco (other), places with that name *Río B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
