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Mount Washington (Oregon)
Mount Washington is a deeply eroded volcano in the Cascade Range of Oregon. It lies within Deschutes and Linn counties and is surrounded by the Mount Washington Wilderness area. Like the rest of the Oregon Cascades, Mount Washington was produced by the subduction of the oceanic Juan de Fuca tectonic plate under the continental North American tectonic plate, forming during the late Pleistocene. Made mostly of mafic (rich in magnesium and iron) volcanic rock like subalkaline basalt and basaltic andesite, it has a volcanic plug occupying its summit cone and numerous dikes. It is surrounded by other volcanic features such as cinder cones and spatter cones. The volcano's last eruptions took place from spatter cones about 1,350 years ago, generating basaltic andesite lava deposits. Mount Washington has barren surroundings, which have seen little historical recreational use. A wagon road at McKenzie Pass was built in 1872, which was later paved during the 1930s. On August 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deschutes County, Oregon
Deschutes County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 198,253. The county seat is Bend. The county was created in 1916 out of part of Crook County and was named for the Deschutes River, which itself was named by French-Canadian trappers of the early 19th century. It is the political and economic hub of Central Oregon. Deschutes comprises the Bend, Oregon Metropolitan Statistical Area. Deschutes is Oregon’s fastest-growing and most recently-formed county. History French-Canadian fur trappers of the Hudson's Bay Company gave the name Rivière des Chutes (River of the Falls) to the Deschutes River, from which the county derived its name. On December 13, 1916, Deschutes County was created from the southern part of Crook County. Bend has been the county seat since the county's formation. It was the last county in Oregon to be established. The Shevlin-Hixon Lumber Company also operated within the Bend area proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basaltic Andesite
Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase. Basaltic andesite can be found in volcanoes around the world, including in Central America and the Andes of South America. Description Basaltic andesite is a fine-grained (aphanitic) igneous rock that is moderately low in silica and low in alkali metal oxides. It is not separately defined in the QAPF classification, which is based on the relative percentages of quartz, alkali feldspar, plagioclase feldspar, and feldspathoids, but would fall in the basalt-andesite field. This corresponds to rock in which feldspathoid makes up less than 10% and quartz less than 20% of the total QAPF fraction, and in which at least 65% of the feldspar is plagioclase. Basaltic andesite would be further distinguished from basalt and andesite by a silica content between 52% and 57%. Although classification by mineral content is preferred by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Institution
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. Called "the nation's attic" for its eclectic holdings of 154 million items, the institution's 19 museums, 21 libraries, nine research centers, and zoo include historical and architectural landmarks, mostly located in the District of Columbia. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 45 states,States without Smithsonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global Volcanism Program
The Smithsonian Institution's Global Volcanism Program (GVP) documents Earth's volcanoes and their eruptive history over the past 10,000 years. The mission of the GVP is to document, understand, and disseminate information about global volcanic activity. Global Volcanism Program Database The GVP gathers information and reports on current eruptions from around the world, and maintains a database repository on active volcanoes, their eruptions and their eruption histories. In this way, a global context for the planet's active volcanism is presented. Smithsonian reporting on current volcanic activity dates back to 1968, with the Center for Short-Lived Phenomena (CSLP). The GVP is housed in the Department of Mineral Sciences, part of the National Museum of Natural History, on the National Mall in Washington, D.C. During the early stages of an eruption, the GVP acts as a clearing house of reports, data, and imagery which are accumulated from a global network of contributors. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoodoo Butte
Hoodoo Butte is a cinder cone butte in the Cascade Range of northern Oregon, located near Santiam Pass. Immediately to the east lies Hayrick Butte, a prime example of a tuya; the two mountains' names were likely mistaken for each other, but stuck with them over time. The area has been subjected to a number of historic fires. Hoodoo is sometimes considered a subfeature of the Mount Washington shield volcano, and it forms part of the Sisters Reach, which extends from South Cinder Peak to Crane Prairie Reservoir, running for . This region has a high vent density, with many mafic (rich in magnesium and iron) volcanoes of Pleistocene to Holocene age, such as Hoodoo. While Hoodoo has an intact summit crater that was blocked from erosion by glaciers, it has an irregular topography, giving it an open appearance. A ski area, also named Hoodoo, is located on the northwest through northeast flanks of the cone, and includes five chairlifts. Other recreational activities popular in the area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hayrick Butte
Hayrick Butte is a tuya, a type of subglacial volcano, in Linn County, Oregon. Located in the Willamette National Forest near Santiam Pass, it lies adjacent to the cinder cone Hoodoo Butte, which has a ski area. Hayrick Butte likely formed when lava erupted underneath an overlying glacier or ice sheet, producing the flat top with near-vertical walls along the ice-contact margin as the lava cooled and hardened. Hayrick Butte has a nearly flat plateau about across and steep walls rising about above its surroundings. A cartographer accidentally switched the names for nearby Hoodoo Butte and Hayrick Butte; the word "hoodoo" usually refers to rock piles and pinnacles like those observed at Hayrick Butte. Compared to Hoodoo, Hayrick is less popular for recreation, though it can be climbed, and there are hiking, snowshoeing, and snowmobile routes surrounding the butte. Its north-facing slope has subalpine forests with mountain hemlock and fir, which are common in the Cascades. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Fingered Jack
Three Fingered Jack is a summit of a shield volcano of the Cascade Range in the U.S. state of Oregon. Formed during the Pleistocene Epoch (geology), epoch, the mountain consists mainly of basaltic andesite lava and was heavily glacier, glaciated in the past. While other Oregon volcanoes that were heavily glaciated—such as Mount Washington (Oregon), Mount Washington and Mount Thielsen—display eroded Volcanic plug, volcanic necks, Three Fingered Jack's present summit is a comparatively narrow ridge of loose tephra supported by a dike (geology), dike only thick on a generally north–south axis. Glaciation exposed radiating dikes and plugs that support this summit. The volcano has long been inactive and is highly eroded. Three Fingered Jack has diverse flora, fauna, and fungi. The Molala people, one of the Indigenous peoples of the Northwest Plateau, indigenous groups in the northwestern United States, historically inhabited the area around the volcano. Not much is known abou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Sisters (Oregon)
--> , topo = USGS South Sister and North Sister , type = Two stratovolcanoes (South, Middle) and one shield volcano (North) , age = Quaternary , volcanic_arc = Cascade Volcanic Arc , last_eruption = 440 CE , first_ascent = , easiest_route = Hiking or scrambling, plus glacier travel on some routes The Three Sisters are closely spaced volcanic peaks in the U.S. state of Oregon. They are part of the Cascade Volcanic Arc, a segment of the Cascade Range in western North America extending from southern British Columbia through Washington and Oregon to Northern California. Each more than in elevation, they are the third-, fourth- and fifth-highest peaks in Oregon. Located in the Three Sisters Wilderness at the boundary of Lane and Deschutes counties and the Willamette and Deschutes national forests, they are about south of the nearest town, Sisters. Diverse species of flora and fauna inhabit the area, which is subject to frequent snowfall, occasional rain, and extreme tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sisters, Oregon
Sisters is a city in Deschutes County, Oregon, United States. It is part of the Bend, Oregon Metropolitan Statistical Area. The population was 2,038 at the 2010 census. History The community takes its name from the nearby Three Sisters mountains. Geography According to the United States Census Bureau, the city has a total area of , all of it land. The Santiam Highway (U.S. Route 20) and the McKenzie Highway (Oregon Route 126) merge briefly to form Cascade Avenue, the main thoroughfare through downtown Sisters. On Cascade Avenue, there is a lot of pedestrian traffic and many specialty stores and galleries. East of Sisters the two highways split, with 126 heading to Redmond and 20 going to Bend.Deschutes County 2011 Edition (PDF) West of Sisters, the road splits once more, with the McKenzie Hig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Names Information System
The Geographic Names Information System (GNIS) is a database of name and locative information about more than two million physical and cultural features throughout the United States and its territories, Antarctica, and the associated states of the Marshall Islands, Federated States of Micronesia, and Palau. It is a type of gazetteer. It was developed by the United States Geological Survey (USGS) in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names. Data were collected in two phases. Although a third phase was considered, which would have handled name changes where local usages differed from maps, it was never begun. The database is part of a system that includes topographic map names and bibliographic references. The names of books and historic maps that confirm the feature or place name are cited. Variant names, alternatives to official federal names for a feature, are also recorded. Each feature receives a per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bend, Oregon
Bend is a city in and the county seat of Deschutes County, Oregon, United States. It is the principal city of the Bend Metropolitan Statistical Area. Bend is Central Oregon's largest city, with a population of 99,178 at the time of the 2020 U.S. Census, up from 76,693 at the time of the 2010 U.S. Census, and 52,029 at the 2000 United States Census, 2000 census. The Bend, OR MSA, Bend metro population was 198,253 as of the 2020 census. It is the fifth largest metropolitan area in Oregon. Bend is located on the eastern edge of the Cascade Range along the Deschutes River (Oregon), Deschutes River. There the Pinus ponderosa, Ponderosa pine forest transitions into the High Desert (Oregon), high desert, characterized by arid land, junipers, sagebrush, and Purshia, bitterbrush. Originally a crossing point on the river, settlement began in the early 1900s. Bend was incorporated as a city in 1905. Economically, it started as a logging town but is now identified as a gateway for many outd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McKenzie Pass
McKenzie Pass, elevation , is a mountain pass in the Cascade Range in central Oregon in the United States. It is located at the border of Linn and Deschutes counties, approximately northwest of Bend, between the Three Sisters to the south and Mount Washington to the north. Oregon Route 242 goes over the pass. At the summit of the pass, Oregon Route 242 crosses a lava flow just west of Sisters. Surrounded by lava, the Dee Wright Observatory was constructed in 1935 by Civilian Conservation Corps workers and named after their foreman. Visitors climb to the observatory to view the Cascade peaks visible from McKenzie Pass. Also near the summit is Clear Lake, a renowned location for fresh-water diving. Highway 242 is not recommended for large trucks, trailers or motor homes due to numerous tight switchbacks. The pass is closed from November to July due to snow. The pass is named for Donald McKenzie, a Scottish Canadian fur trader who explored parts of the Pacific Northwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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