Mount Tehama (original) (raw)
Mount Tehama (also called Brokeoff Volcano or Brokeoff Mountain) is an eroded andesitic stratovolcano in the Cascade Volcanic Arc and the Cascade Range in Northern California. Part of the Lassen volcanic area, its tallest remnant, Brokeoff Mountain, is itself the second highest peak in Lassen Volcanic National Park and connects to the park's highest point, Lassen Peak. Located on the border of Tehama County and Shasta County, Brokeoff's peak is the highest point in the former. The hikers that summit this mountain each year are treated to "exceptional" views of Lassen Peak, the Central Valley of California, and many of the park's other features. On clear days, Mount Shasta can also be seen in the distance.
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| dbo:abstract | Le mont Tehama, Mount Tehama en anglais, est un volcan andésitique éteint situé à l'extrémité méridionale de la chaîne des Cascades dans le Nord de la Californie. Il se trouve à la frontière entre les comtés de Shasta et de Tehama, au sein du parc national volcanique de Lassen. Après avoir été actif entre 600 000 et 400 000 ans avant notre ère et avoir atteint plus de 3 300 mètres d'altitude, il a été fortement érodé. Il est désormais constitué par les restes d'une caldeira et Brokeoff Mountain, le sommet principal situé sur son rebord occidental, s'élève à 2 815 mètres d'altitude, derrière un autre volcan du parc, le pic Lassen, apparu il y a 28 000 ans à moins de sept kilomètres au nord. Alors que la région est durablement colonisée dès le début du XIXe siècle, les propriétés géophysiques puis le potentiel touristique du volcan sont exploités économiquement entre le milieu de ce siècle et du suivant. Le panorama depuis le sommet est très prisé et la randonnée pédestre comme à skis restent populaires, grâce aux fortes chutes de neige en hiver. (fr) Mount Tehama (also called Brokeoff Volcano or Brokeoff Mountain) is an eroded andesitic stratovolcano in the Cascade Volcanic Arc and the Cascade Range in Northern California. Part of the Lassen volcanic area, its tallest remnant, Brokeoff Mountain, is itself the second highest peak in Lassen Volcanic National Park and connects to the park's highest point, Lassen Peak. Located on the border of Tehama County and Shasta County, Brokeoff's peak is the highest point in the former. The hikers that summit this mountain each year are treated to "exceptional" views of Lassen Peak, the Central Valley of California, and many of the park's other features. On clear days, Mount Shasta can also be seen in the distance. Brokeoff Volcano was active from 590,000 to 38 I7,000 years ago, during which period it erupted numerous flows with compositions ranging from basaltic andesite to dacite. At its peak, Brokeoff Volcano reached an estimated height of 3,350 metres (10,990 ft) and had a basal circumference of approximately 12 kilometres (7.5 mi). At approximately 313,000 years ago volcanism began shifting to the northeast of Brokeoff Volcano, with volcanism currently focused around the modern Lassen Peak. Following the end of volcanism at Brokeoff Volcano, cooling magma beneath the surface continued to drive hot, highly reactive hydrothermal fluids circulating near the central vent of the volcano. These hydrothermal fluids chemically weathered the volcanic rocks near the central vent, making them particularly susceptible to physical erosion. Glaciers and streams were able to rapidly erode the hydrothermally altered rocks near the central vent, creating the deep Mill Canyon and exposing deep into the core of the ancient volcano. Many of the lava flows along the flanks of Brokeoff Volcano were not as extensively chemically weathered, resulting in the flanks of much of the volcano being preserved. Remnants of the flanks of Brokeoff Volcano include Brokeoff Mountain, Mount Conard, Pilot Pinnacle, Mount Diller, and Diamond Peak. (en) Il monte Tehama (in inglese Mount Tehama), è un vulcano andesitico estinto situato all'estremità meridionale della catena delle Cascate, nella California settentrionale. Situato al confine tra le contee di Shasta e Tehama, è compreso all'interno del parco nazionale vulcanico di Lassen. Dopo essere stato attivo tra 600.000 e 400.000 anni a.C. e aver raggiunto un'altezza di oltre 3.300 m, venne poi pesantemente eroso ed oggi mette in mostra i resti di una caldera e la montagna Brokeoff, la vetta principale sul suo bordo occidentale, alta 2.815 metri; il Tehama non è lontano da un altro vulcano nel parco, il Lassen Peak, attivo da 28.000 anni a meno di 7 km a nord. Mentre la regione fu decisamente colonizzata dall'inizio dell'Ottocento, le proprietà geofisiche e il conseguente potenziale turistico del vulcano furono sfruttati economicamente tra la metà di quel secolo e il successivo. Il panorama visto dalla vetta è molto apprezzato e gli appassionati si recano in loco perché interessati all'escursionismo o alle sciate, abbondanti soprattutto in inverno. (it) Mount Tehama is een geërodeerde andesitische stratovulkaan in Lassen Volcanic National Park, in het noorden van de Amerikaanse staat Californië. Mount Tehama maakt deel uit van het Cascadegebergte en van de Cascade Volcanic Arc. De hoogste restant van de oorspronkelijke vulkaan, Brokeoff Mountain, is de tweede hoogste berg in het nationaal park. De berg ligt bovendien op de grens tussen Tehama en Shasta County en is als dusdanig de hoogste bergtop van eerstgenoemde county. Een beklimming van de berg levert een uitzonderlijk zicht op van de Central Valley van Californië, Lassen Peak en verschillende andere bezienswaardigheden in het nationaal park. Op heldere dagen kan men Mount Shasta in de verte zien. (nl) |
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| dbo:mountainRange | dbr:Cascade_Range |
| dbo:nationalTopographicSystemMapNumber | USGSLassen Peak |
| dbo:prominence | 278.892000 (xsd:double) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Broken_face_of_Brokeoff_Mountain.jpg?width=300 |
| dbo:type | dbr:Erosion |
| dbo:wikiPageExternalLink | http://www.summitpost.org/show/mountain_link.pl/mountain_id/900 https://books.google.com/books%3Fid=DnV7xkdg4IYC https://books.google.com/books%3Fid=Xr7v7GNmHs0C&q=Fire+Mountains+of+the+West:+The+Cascade+and+Mono+Lake+Volcanoes&pg=PA551 https://books.google.com/books%3Fid=eRqrEwvIvKoC&q=The+Volcano+Adventure+Guide. https://books.google.com/books%3Fid=eyDRib-FJh4C&q=Volcanoes+of+North+America https://books.google.com/books%3Fid=n0E8wQLJ_yUC&q=California:+A+Guide+to+the+State+%26+National https://pubs.usgs.gov/sim/2899/ http://www.peakbagger.com/peak.aspx%3Fpid=2525 |
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| dbp:easiestRoute | dbr:Hiking |
| dbp:elevationFt | 9239 (xsd:integer) |
| dbp:listing | California county high points 17th (en) |
| dbp:location | Shasta / Tehama counties, California, U.S. (en) |
| dbp:name | Brokeoff Volcano (en) |
| dbp:photo | Broken face of Brokeoff Mountain.jpg (en) |
| dbp:photoCaption | Broken northeast face of Brokeoff Volcano. (en) |
| dbp:prominenceFt | 915 (xsd:integer) |
| dbp:range | dbr:Cascade_Range |
| dbp:topo | USGS Lassen Peak (en) |
| dbp:type | dbr:Stratovolcano dbr:Erosion |
| dbp:volcanicArc | dbr:Cascade_Volcanoes |
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| gold:hypernym | dbr:Stratovolcano |
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| rdfs:comment | Mount Tehama (also called Brokeoff Volcano or Brokeoff Mountain) is an eroded andesitic stratovolcano in the Cascade Volcanic Arc and the Cascade Range in Northern California. Part of the Lassen volcanic area, its tallest remnant, Brokeoff Mountain, is itself the second highest peak in Lassen Volcanic National Park and connects to the park's highest point, Lassen Peak. Located on the border of Tehama County and Shasta County, Brokeoff's peak is the highest point in the former. The hikers that summit this mountain each year are treated to "exceptional" views of Lassen Peak, the Central Valley of California, and many of the park's other features. On clear days, Mount Shasta can also be seen in the distance. (en) Le mont Tehama, Mount Tehama en anglais, est un volcan andésitique éteint situé à l'extrémité méridionale de la chaîne des Cascades dans le Nord de la Californie. Il se trouve à la frontière entre les comtés de Shasta et de Tehama, au sein du parc national volcanique de Lassen. Après avoir été actif entre 600 000 et 400 000 ans avant notre ère et avoir atteint plus de 3 300 mètres d'altitude, il a été fortement érodé. Il est désormais constitué par les restes d'une caldeira et Brokeoff Mountain, le sommet principal situé sur son rebord occidental, s'élève à 2 815 mètres d'altitude, derrière un autre volcan du parc, le pic Lassen, apparu il y a 28 000 ans à moins de sept kilomètres au nord. Alors que la région est durablement colonisée dès le début du XIXe siècle, les propriétés géophysique (fr) Il monte Tehama (in inglese Mount Tehama), è un vulcano andesitico estinto situato all'estremità meridionale della catena delle Cascate, nella California settentrionale. Situato al confine tra le contee di Shasta e Tehama, è compreso all'interno del parco nazionale vulcanico di Lassen. Dopo essere stato attivo tra 600.000 e 400.000 anni a.C. e aver raggiunto un'altezza di oltre 3.300 m, venne poi pesantemente eroso ed oggi mette in mostra i resti di una caldera e la montagna Brokeoff, la vetta principale sul suo bordo occidentale, alta 2.815 metri; il Tehama non è lontano da un altro vulcano nel parco, il Lassen Peak, attivo da 28.000 anni a meno di 7 km a nord. Mentre la regione fu decisamente colonizzata dall'inizio dell'Ottocento, le proprietà geofisiche e il conseguente potenziale turi (it) Mount Tehama is een geërodeerde andesitische stratovulkaan in Lassen Volcanic National Park, in het noorden van de Amerikaanse staat Californië. Mount Tehama maakt deel uit van het Cascadegebergte en van de Cascade Volcanic Arc. De hoogste restant van de oorspronkelijke vulkaan, Brokeoff Mountain, is de tweede hoogste berg in het nationaal park. De berg ligt bovendien op de grens tussen Tehama en Shasta County en is als dusdanig de hoogste bergtop van eerstgenoemde county. (nl) |
| rdfs:label | Mont Tehama (fr) Monte Tehama (it) Mount Tehama (en) Mount Tehama (nl) |
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| geo:long | -121.559448 (xsd:float) |
| prov:wasDerivedFrom | wikipedia-en:Mount_Tehama?oldid=1121585170&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Geothermal_areas_in_Lassen_area.gif wiki-commons:Special:FilePath/NPS_Brokeoff_Volcano_2.png wiki-commons:Special:FilePath/Broken_face_of_Brokeoff_Mountain.jpg wiki-commons:Special:FilePath/Brokeoff_Mtn_in_winter.jpg wiki-commons:Special:FilePath/NPS_Brokeoff_Volcano.png |
| foaf:isPrimaryTopicOf | wikipedia-en:Mount_Tehama |
| foaf:name | Brokeoff Volcano (en) |
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