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Osceola Mudflow
The Osceola Mudflow, also known as the Osceola Lahar, was a debris flow and lahar in the U.S. state of Washington that descended from the summit and northeast slope of Mount Rainier, a volcano in the Cascade Range during a period of eruptions about 5,600 years ago. It traveled down the west and main forks of the White River, passed the location of present-day Enumclaw then reached Puget Sound in several areas, including near the present day sites of Tacoma and Auburn. The Osceola flow began either as an avalanche or series of avalanches near the summit of Mount Rainier but had transformed to a lahar within of where it was initiated as it incorporated significant amounts of water from within the volcano's hydrothermal system. The sector 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 ... [...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 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 Books * ''Mount!'', a 2016 novel by Jilly Cooper 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 ** To prepare dead animals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
County (United States)
In the United States, a county or county equivalent is an Administrative division, administrative subdivision of a U.S. state, state or territories of the United States, territory, typically with defined geographic Border, boundaries and some level of governmental authority. The term "county" is used in 48 states, while Louisiana and Alaska have functionally equivalent subdivisions called List of parishes in Louisiana, parishes and List of boroughs and census areas in Alaska, boroughs, respectively. Counties and other local governments in the United States, local governments exist as a matter of U.S. state law, so the specific governmental powers of counties may vary widely between the states, with many providing some level of services to civil townships, Local government in the United States, municipalities, and Unincorporated area#United States, unincorporated areas. Certain municipalities are List of U.S. municipalities in multiple counties, in multiple counties. Some municip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Success
Mount Rainier ( ), also known as Tahoma, is a large active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about south-southeast of Seattle. With an officially recognized summit elevation of at the Columbia Crest, it is the highest mountain in the U.S. state of Washington, the most topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc. Due to its high probability of an eruption in the near future and proximity to a major urban area, Mount Rainier is considered one of the most dangerous volcanoes in the world, and it is on the Decade Volcano list. The large amount of glacial ice means that Mount Rainier could produce massive lahars that could threaten the entire Puyallup River valley and other river valleys draining Mount Rainier, including the Carbon, White, Nisqually, and Cowlitz (above Riffe Lake). According to the United St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emmons Glacier
Emmons Glacier is on the northeast flank of Mount Rainier, in Washington. At , it has the largest surface area of any glacier in the contiguous United States. The glacier was named after the geologist Samuel Franklin Emmons after his involvement in a survey of Mount Rainier in 1870. Starting at an elevation of over , the Emmons glacier flows down eastward. Near the Disappointment Cleaver at , the Emmons is joined by the Ingraham Glacier flowing to the south. The glaciers flow together and remain connected until they split up upon reaching the wedge of Little Tahoma Peak. As the Emmons flows northeast, the massive glacier descends until it reaches its rocky lower terminus at about in elevation. In the 1930s, the glacier was found to be receding quickly. In 1963, however, a rock fall from Little Tahoma Peak covered the lower glacier with rock debris. The debris cover insulated the ice from melting. As a result of decreased melting, the glacier advanced rapidly in the early 1980 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon 14
Carbon-14, C-14, C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic matter is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples. Carbon-14 was discovered on February 27, 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, California. Its existence had been suggested by Franz Kurie in 1934. There are three naturally occurring isotopes of carbon on Earth: carbon-12 (C), which makes up 99% of all carbon on Earth; carbon-13 (C), which makes up 1%; and carbon-14 (C), which occurs in trace amounts, making up about 1-1.5 atoms per 10 atoms of carbon in the atmosphere. C and C are both stable; C is unstable, with half-life years. Carbon-14 has a specific activity of 62.4 mCi/mmol (2.31 GBq/mmol), or 164.9 GBq/g. Carbon-14 decays i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for Chronological dating, determining the age of an object containing organic material by using the properties of carbon-14, radiocarbon, a radioactive Isotopes of carbon, isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Atmosphere of Earth, Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Rainier 5845s
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 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 Books * ''Mount!'', a 2016 novel by Jilly Cooper 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 ** To prepare dead animal ... [...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 approximately 5,000 years ago forms much of the Enumclaw plateau, and was named after the community. See also * List of ghost towns in Washington This is an incomplete list of ghost towns in Washington, a state of the United States. Classification Barren site * Sites no longer in existence * Sites that have been destroyed * Covered with water * Reverted to pasture * May have a few ... References Ghost towns in King County, Washington Ghost towns in Washington (state) History of King County, Washington {{Ghost-town-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 (a 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 standardised international units of geological 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 precis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing Ice age, glacial cycles of the Quaternary, and is equivalent to Marine isotope stages, Marine Isotope Stage 1. The Holocene correlates with the last maximum axial tilt towards the Sun of the Earth#Axial tilt and seasons, Earth's obliquity. The Holocene corresponds with the rapid proliferation, growth, and impacts of the human species worldwide, including Recorded history, all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban culture, urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puyallup, Washington
Puyallup ( ) is a city in Pierce County, Washington, United States. It is on the Puyallup River about southeast of Tacoma and south of Seattle. The city 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" in Lushootseed. Puyallup is home to the Washington State Fair, the state's largest annual fair. The name of the city is also used in mailing addresses for adjacent unincorporated areas, such as the larger-populated South Hill. 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 fir ... [...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 According to the United States Census Bureau, the city has a total area of , of which is land and is water. Sumner, along with Orting and Puyallup, lie in the lahar hazard zone for Mount Rainier. During the Osceola Mudflow, dated to approximately 5,600 years before present, a deposit covered a portion of the city's modern location. Economy Dillanos Coffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
