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Osceola Lahar
The Osceola Mudflow, also known as the Osceola Lahar, was a lahar in the U.S. state of Washington (state), Washington that descended from the summit and northeast slope of Mount Rainier during a period of eruptions about 5,600 years ago. It traveled down the west and main forks of the White River (Washington), White River, passed the location of present-day Enumclaw, Washington, Enumclaw then reached Puget Sound near present-day Auburn, Washington, Auburn. The Osceola collapse formed a wide horseshoe-shaped crater, open to the northeast, almost the same size as the crater produced by the 1980 eruption of Mount St. Helens. Most of the Osceola crater has been filled in by subsequent lava eruptions, most recently about 2,200 years ago. With a volume of and an areal extent of about , the Osceola Mudflow buried a large portion of the Puget Sound lowland with metasomatism, hydrothermally altered volcanic material. Many communities in King County, Washington, King and Pierce Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rainier Osceola Collapse
Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, Cornwall, England * Mounts, Indiana, a community in Gibson County, Indiana, United States People * Mount (surname) * William L. Mounts (1862–1929), American lawyer and politician Computing and software * Mount (computing), the process of making a file system accessible * Mount (Unix), the utility in Unix-like operating systems which mounts file systems Displays and equipment * Mount, a fixed point for attaching equipment, such as a hardpoint on an airframe * Mounting board, in picture framing * Mount, a hanging scroll for mounting paintings * Mount, to display an item on a heavy backing such as foamcore, e.g.: ** To pin a biological specimen, on a heavy backing in a stretched stable position for ease of dissection or display ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kent, Washington
Kent is a city in King County, Washington, United States. It is part of the Seattle–Tacoma–Bellevue metropolitan area and had a population of 136,588 as of the 2020 census, making it the fourth-largest municipality in greater Seattle and the sixth-largest in Washington state. The city is connected to Seattle, Bellevue and Tacoma via State Route 167 and Interstate 5, Sounder commuter rail, and commuter buses. Incorporated in 1890, Kent is the second-oldest incorporated city in King County, after Seattle. It is generally divided into three areas: West Hill (mixed residential and commercial along Interstate 5), Valley (primarily industrial and commercial with some medium-density residential; significant parkland along Green River), and East Hill (primarily residential with retail). History The Kent area was first permanently settled by European Americans in the 1850s along the banks of what was then the White River. The first settler was Samuel Russell, who sailed the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslides In The United States
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the shear s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Washington (state)
The geology of the Pacific Northwest includes the composition (including rock, minerals, and soils), structure, physical properties and the processes that shape the Pacific Northwest region of North America. The region is part of the Ring of Fire: the subduction of the Pacific and Farallon Plates under the North American Plate is responsible for many of the area's scenic features as well as some of its hazards, such as volcanoes, earthquakes, and landslides. The geology of the Pacific Northwest is vast and complex. Most of the region began forming about 200 million years ago as the North American Plate started to drift westward during the rifting of Pangaea. Since that date, the western edge of North America has grown westward as a succession of island arcs and assorted ocean-floor rocks have been added along the continental margin. There are at least five geologic provinces in the area: the Cascade Volcanoes, the Columbia Plateau, the North Cascades, the Coast Mountains, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lahars
A lahar (, from jv, ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water. The material flows down from a volcano, typically along a river valley. Lahars are extremely destructive: they can flow tens of metres per second, they have been known to be up to deep, and large flows tend to destroy any structures in their path. Notable lahars include those at Mount Pinatubo and Nevado del Ruiz, the latter of which killed thousands of people in the town of Armero. Etymology The word ''lahar'' is of Javanese origin. Berend George Escher introduced it as a geological term in 1922. Description The word ''lahar'' is a general term for a flowing mixture of water and pyroclastic debris. It does not refer to a particular rheology or sediment concentration. Lahars can occur as normal stream flows (sediment concentration of less than 30%), hyper-concentrated stream flows (sediment concentration between 30 and 60 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osceola, Washington
Osceola was an unincorporated community that existed in King County, Washington, around the turn of the 20th century, about two miles southeast of Enumclaw. Today not much remains except the last surviving one-room schoolhouse on the Enumclaw plateau; it is now the Osceola Community Club, a women's social club. The Osceola Mudflow that spread from nearby Mount Rainier Mount Rainier (), indigenously known as Tahoma, Tacoma, Tacobet, or təqʷubəʔ, is a large active stratovolcano in the Cascade Range of the Pacific Northwest, located in Mount Rainier National Park about south-southeast of Seattle. With a ... approximately 5,000 years ago forms much of the Enumclaw plateau, and was named after the community. Ghost towns in Washington (state) History of King County, Washington {{KingCountyWA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epoch (geology)
The geologic time scale, or geological time scale, (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (scientific branch of geology that aims to determine the age of rocks). It is used primarily by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists) to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardized international units of geologic time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precisely de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.Oxford University Press – Why Geography Matters: More Than Ever (book) – "Holocene Humanity" section https://books.google.com/books?id=7P0_sWIcBNsC The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of gl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puyallup, Washington
Puyallup ( or ) is a city in Pierce County, Washington, United States, located about 10 miles (16 km) southeast of Tacoma and 35 miles (56 km) south of Seattle. It had a population of 42,973 at the 2020 census. The city's name comes from the Puyallup Tribe of Native Americans and means "the generous people". Puyallup is also home to the Washington State Fair, the state's largest fair. History The Puyallup Valley was originally inhabited by the Puyallup people, known in their language as the spuyaləpabš, meaning "generous and welcoming behavior to all people (friends and strangers) who enter our lands." The first white settlers in the region were part of the first wagon train to cross the Cascade Range at Naches Pass in 1853. Native Americans numbered about 2,000 in what is now the Puyallup Valley in the 1830s and 1840s. The first European settlers arrived in the 1850s. In 1877, Ezra Meeker platted a townsite and named it Puyallup after the local Puyallup Indian tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sumner, Washington
Sumner is a city in northern Pierce County, Washington, United States. The population was 10,621 at the 2020 census. Nearby cities include Puyallup to the west, Auburn to the north, and Bonney Lake to the east. History Sumner was founded in 1853 as Stuck Junction and platted in 1883 by George H. Ryan, in anticipation of a stop on the Northern Pacific Railway. The town was named "Franklin" until 1891, when the Post Office Department requested that the name be changed to avoid confusion with similarly named towns. The name of abolitionist Senator Charles Sumner was chosen for the town after a lottery. Geography Sumner is located at (47.205823, -122.235803). According to the United States Census Bureau, the city has a total area of , of which is land and is water. After Orting, Sumner and Puyallup are geographically next in line to be hit by lahars whenever Mount Rainier erupts in the future. This is depicted in the '' Modern Marvels'' episode titled "Most Dan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buckley, Washington
Buckley is a city in Pierce County, Washington, United States, founded in 1882. The population was 5,114 at the 2020 census. Buckley sits below Mount Rainier and is well known for hosting the annual Log Show. Geography Buckley is located at (47.162250, -122.027744) near the communities of Enumclaw, Bonney Lake, and Wilkeson. According to the United States Census Bureau, the city has a total area of , of which, is land and is water. Climate According to the Köppen Climate Classification system, Buckley has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. Demographics 2010 census As of the census of 2010, there were 4,354 people, 1,591 households, and 1,049 families residing in the city. The population density was . There were 1,669 housing units at an average density of . The racial makeup of the city was 93.0% White, 0.6% African American, 0.8% Native American, 0.8% Asian, 0.1% Pacific Islander, 1.2% from other races, and 3.4% from two or more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orting, Washington
Orting is a city in Pierce County, Washington, United States. The population was 9,041 at the 2020 census. History The first recorded claims for land in Orting were made in 1854 by William Henry Whitesell, Thomas Headley, Daniel Lane, and Daniel Varner. Streets in the modern city are named after the four men, and a monument in Orting City Park commemorates them. Orting was officially incorporated as a city on April 22, 1889. Early growth surrounded the area's production and logging industries. Later, Christmas tree and bulb farms also became part of the local economy. Orting was also a supply town for the coal mining towns Wilkeson and Carbonado . The first railroad in the city was built in 1877 by the Northern Pacific Railway, called "Whitesell's Crossing" because it ran right through the Whitesell property. Because railroads eased transportation, Orting's population quickly increased. Remaining parts from the railroad are part of the Meeker Southern Railroad, which runs b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
