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Topic: Mount Thielsen


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In the News (Tue 16 Mar 10)

  
  Mount Thielsen - Wikipedia, the free encyclopedia
Mount Thielsen is a stratovolcano in southern Oregon that has been so deeply eroded by glaciers that there is no summit crater and the upper part of the mountain is more or less a horn.
West of Thielsen is Diamond Lake and west of the lake is Mount Bailey (a much less eroded and younger stratovolcano).
The rock formations on Thielsen have normal magnetic polarity, meaning they all likely erupted within the last 700,000 years (it is possible, yet unlikely, that some of the earliest lavas flowed during a previous period of normal polarity).
en.wikipedia.org /wiki/Mount_Thielsen   (320 words)

  
 Mount Thielsen   (Site not responding. Last check: 2007-10-21)
Mount Thielsen (9178 feet, 2797.5 meters) is a stratovolcano in the Oregon portion of the Cascade Range.
Thielsen's spire-like top is hit by lightning so often that some of its summit rocks have melted into a rare mineral called fulgurite and the mountain itself has earned the nickname "the lightening rod of the Cascades."
Thielsen's initial cone was made of pyroclastic material and probably reached a height of 1000 to 3000 feet (~300-900 meters).
www.bopedia.com /en/wikipedia/m/mo/mount_thielsen.html   (305 words)

  
 Encyclopedia: Mount Thielsen   (Site not responding. Last check: 2007-10-21)
Mount Adams in Washington state The Cascade Range is a mountainous region famous for its chain of tall volcanos called the High Cascades that run north-south along the west coast of North America from British Columbia to the Shasta Cascade area of northern California.
Thielsen's spire-like top is hit by lightning so often that some of its summit rocks have melted into a rare mineral called fulgurite, and the mountain itself has earned the nickname "the lightning rod of the Cascades." For alternate meanings, see Lightning (disambiguation).
Mount Bailey is a relatively young tephra cone shield volcano in the Cascade Range that is located opposite Mount Thielsen from Diamond Lake in southern Oregon.
www.nationmaster.com /encyclopedia/Mount-Thielsen   (1112 words)

  
 Cascade Range
Mount Baker was named for Vancouver's third lieutenant, the graceful Mount St. Helens for a famous diplomat, Mount Hood was named in honor of Samuel Hood (a high-ranking naval officer) and the tallest Cascade, Mount Rainier, is the namesake of Admiral Peter Rainier.
Mount Rainier (southeast of Tacoma, Washington) - highest peak in the Cascades, it dominates the surrounding landscape.
Mount Rainier National Park surrounds the Cascades' tallest volcano, Mount Rainier, which in turn is shrouded in the largest glacier system in the United States south of Alaska.
www.brainyencyclopedia.com /encyclopedia/c/ca/cascade_range.html   (1800 words)

  
 SummitPost.org - Mount Thielsen Climbing Information
Mount Thielsen is said to be hit by more lightning than an other High Cascade peak, earning it the nickname "The lightning rod of the Cascades".
Thielsen is the remainder of a volcano, and is a pretty loose heap of rock except for the summit, which is a small tower of large rocks that stick up impressively into the sky.
GEOLOGY: Mount Thielsen is a shield volcano that is capped with a composite cone (a stratovolcano).
www.summitpost.com /mountains/mountain_link.pl/mountain_id/276   (518 words)

  
 Mt Thielsen Prospectus, June 26, 2004   (Site not responding. Last check: 2007-10-21)
Mount Thielsen is a normally polarized shield volcano comprising approximately 8 cubic kilometers of basaltic andesite built atop a broad pedestal (24 cubic kilometers) of older lava.
Thielsen is remarkable even at a distance for its colorfully interbedded pyroclastic rocks that dip away from the jagged spire of the central plug, often called the "lightning rod of the Cascades".
Thielsen's age is approximately 290,000 years, and its geomorphology is a reference point for assigning the age of Cascade Range volcanoes.
www.chemeketans.org /Thielsen2004.htm   (609 words)

  
 Mount Thielsen -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-21)
The reason for this is two-fold; Thielsen is a relatively old (A succession of stages or operations or processes or units) Cascade volcano and it stopped cone-building (Symptom consisting of a breaking out and becoming visible) eruptions relatively early.
West of Thielsen is Diamond Lake and west of the (A body of (usually fresh) water surrounded by land) lake is (Click link for more info and facts about Mount Bailey) Mount Bailey (a much less eroded and younger stratovolcano).
Thielsen's initial cone was made of (Click link for more info and facts about pyroclastic) pyroclastic material and probably reached a height of 1000 to 3000 feet (~300-900 meters).
www.absoluteastronomy.com /encyclopedia/m/mo/mount_thielsen.htm   (388 words)

  
 Crater Lake National Park: Nature Notes (1953)
Mount Thielsen, the magnificent pinnacle seventeen miles NNE of Rim Village, always excites the interest of the visitor to Crater Lake National Park.
Mount Thielsen, like all volcanoes, is thus composed of materials thrown up by its own eruptions.
The five mile trail to the summit of Mount Thielsen fades as the solid rock near the top is reached, but beyond this point the best route approaching the spire from the south should be apparent.
www.nps.gov /crla/notes/vol19i.htm   (1541 words)

  
 CVO Website - Mount Thielsen, Oregon
Mount Thielsen (2,800 meters; 9,187 feet) is a normally polarized shield volcano comprising approximately 8 cubic kilometers of basaltic andesite built atop a broad pedestal (24 cubic kilometers) of older lava.
Very little of Thielsen's underpinnings are exposed because Holocene Mazama ash, which erupted from vents at Crater Lake National Park (20 kilometers south), forms a shroud 4-20 meters thick in the Thielsen area.
Mount Thielsen is similar to many of the basaltic andesite shields that form the bulk of the High Cascades in Oregon.
vulcan.wr.usgs.gov /Volcanoes/Thielsen/description_thielsen.html   (878 words)

  
 Klamath County High Point Trip Report   (Site not responding. Last check: 2007-10-21)
Mount Thielsen is just north of Crater Lake and has a remarkable summit spire which, from some angles, appears as skinny as a needle.
It is highly probable that anyone climbing Mount Thielsen by this route will automatically reach the high point of Klamath county, even if the border between it and Douglas county does not go directly over the summit.
However, a short shoulder juts out to the east and culminates at an outcrop with about 8' of prominence, which could be the county HP if the county line passes between it and the summit pinnacle at a lower elevation.
www.cohp.org /or/Klamath_2.html   (390 words)

  
 Mount Thielsen Wilderness
For the Mount Thielsen Wilderness, this process began in 1984 when 55,100 acres were designated by Public Law 98-328.
The Mount Thielsen Wilderness is part of the 106 million acre National Wilderness Preservation System.
In an age of "...increasing population, accompanied by expanding settlement and growing mechanization," you play an important role in helping to "secure for the American people of present and future generations the benefits of an enduring resource of wilderness" as called for by the Congress of the United States through the Wilderness Act of 1964.
www.townsusa.org /recreation/4818/Mount_Thielsen_Wilderness   (296 words)

  
 Skiing the Cascade Volcanoes: Mount Thielsen
The soaring spire of Mount Thielsen is the highest of several eroded volcanic remnants which mark the central part of the Cascade Range in Oregon.
Thielsen also hosts Oregon's most southerly glacier, the tiny Lathrop Glacier, which is located in a small cirque at 8000 ft (2400 m) beneath the craggy cliffs of the north face.
The standard (and safest) climbing route to the summit of Thielsen follows the Mount Thielsen Trail to its junction with the PCT near tree line and then heads up the open, steepening slopes of the southwest bowl to the base of the summit pinnacle.
www.skimountaineer.com /CascadeSki/CascadeSki.php?name=Thielsen   (546 words)

  
 Winema National Forest - Mt. Thielsen Wilderness
Much of the Mount Thielsen Wilderness is made up of high alpine forests and open meadows.
Elevations range from 5,000 feet to the 9,182 summit of Mount Thielsen, the "lightening rod of the Cascades."
The Pacific Crest National Scenic Trail winds through the Mount Thielsen Wilderness for 26 miles along the summit of the Cascade Range.
www.fs.fed.us /r6/winema/recreation/wilderness/mtthielsen.shtml   (104 words)

  
 Cascade Peaks: Mount Thielsen
Mount Thielsen, from the west rim of Crater Lake.
Driving north from Medford, to the west of Crater Lake, you come over a hill and there is Mount Thielsen right ahead of you, with its spire thrusting skyward 9,173 feet.
Mount Thielsen is known as "The Lightning Rod of the Cascades"; lightning strikes the spire so often that "lightning tubes" of recrystalized rock are formed.
www.mind.net /dlmark/cthielsen.htm   (116 words)

  
 CVO Menu - Cascade Range Volcano Summary   (Site not responding. Last check: 2007-10-21)
Mount Garibaldi is one of the larger volcanoes (6.5 cubic kilometers) in a chain of small Quaternary volcanic piles -- the Garibaldi Belt -- which trend N25degrees W within the southern Coast Mountains of British Columbia.
Mount Adams, one of the largest volcanoes in the Cascade Range, dominates the Mount Adams volcanic field in Skamania, Yakima, Klickitat, and Lewis counties and the Yakima Indian Reservation of south-central Washington.
Mount Hood is also one of the major volcanoes of the Cascade Range, having erupted repeatedly for hundreds of thousands of years, most recently during two episodes in the past 1,500 years.
www.ndsu.nodak.edu /instruct/ashworth/coursework/g106/radioactivedating/mazama.htm   (8585 words)

  
 SummitPost.org - Mount Hood Climbing Information
Mount Hood, located about 50 miles east of Portland, Oregon, is one of the most climbed glaciated peaks in North America (#2 in the world behind Japan's Fuji-san, according to some).
While Mount Hood has reportedly been summited by a woman in high heels, this does not discount the need for climbing experience on this mountain.
Two things are required for a MLU to work: (1) the lost climber must have it and activate it; (2) the county sheriff must be notified of the lost climber (call 911) to activate their receiving equipment.
www.summitpost.org /show/mountain_link.pl/mountain_id/3   (1019 words)

  
 Golden Gate Photo - Oregon Cascades Gallery
Mount Thielsen, Mount Jefferson, and two of the Three Sisters are older extinct volcanoes.
Mount Hood is a dormant stratovolcano, composed of andesite and dacite lava and pyroclastic deposits.
Mount Jefferson is an extinct stratovolcano, composed of andesite and dacite lava and pyroclastic deposits.
www.goldengatephoto.com /westus/orcascade.html   (397 words)

  
 Backpacking Destinations - Places - :Mount Thielsen Wilderness Area- Print View   (Site not responding. Last check: 2007-10-21)
The Mount Thielsen Wilderness lies just north of Crater Lake National Park along the crest of the Cascade Mountains and reaches a high point on Mount Thielsen itself at 9,182 feet in the southern portion.
Volcanic in origin, Mount Thielsen is a prominent feature, carved majestically by glacial activity and rising to a spire-shaped summit referred to sometimes as the "Lightning Rod of the Cascades." Flat to moderate rolling country at the periphery of the area changes to very steep and sharply dissected ridges toward the crest.
The Mount Thielsen Trail enters for approximately five miles from the west side to rise above treeline and, with 200 feet of hand-over-hand scrambling, finally reaches to within 80 feet of the summit and a breathtaking view.
www.backpacker.com /place/0,2678,110_A_P,00.html   (275 words)

  
 Mount Thielsen
We'd left Bend and made the boogie to the Mt. Thielsen trailhead and had arrived a little too early.
Thielsen casting a shadow in the morning light.
Don't know what this light phenomenon is called, but you can see exactly where we are on the route - indicated by the brightest spot on the left shoulder of the shadow.
www.spiritone.com /~carpjam/html/thielsen/thielsen10.02.html   (670 words)

  
 Brought to you by NW NLP, Inc. - Timberline, Gov. Camp, Rhododendron, Welches, Zig Zag, Wemme and Brightwood Oregon   (Site not responding. Last check: 2007-10-21)
Mount Hood is perhaps the most accessible of Oregon's volcanoes, located only 75 kilometers east-southeast of Portland, Oregon.
Mount Hood was named after a British admiral and first described in 1792 by William Broughton, member of an expedition under command of Captain George Vancouver.
Mount Hood is also one of the major volcanoes of the Cascade Range, having erupted repeatedly for hundreds of thousands of years.
nwnlp.com /Northwest/volcano.html   (449 words)

  
 Cascade Range   (Site not responding. Last check: 2007-10-21)
Mount Baker was named for Vancouver's third lieutenant, the graceful Mount St. Helens for a famous diplomat, Mount Hood was named in honor of Samuel Hood, 1st Viscount Hood (an admiral of the Royal Navy) and the tallest Cascade, Mount Rainier, is the namesake of Admiral Peter Rainier.
Then, on May 18, 1980, the dramatic eruption of little-known Mount St. Helens shattered the quiet and brought the world's attention to the range.
Crater Lake National Park preserves the remains of Mount Mazama, a large volcano that imploded thousands of years ago, forming a caldera that was later filled with Crater Lake.
www.worldhistory.com /wiki/C/Cascade-Range.htm   (1891 words)

  
 thielsen: Thielsen Architects, Inc. P.S.   (Site not responding. Last check: 2007-10-21)
Thielsen Towering above Diamond Lake rises the rocky spire of Mt. Thielsen.
Mount Thielsen is similar to many of the.
to the 9,182 summit of Mount Thielsen, the "lightening rod of the Cascades.
www.usmlepass.com /thielsen.html   (243 words)

  
 Hiking Oregon: Mount Thielsen   (Site not responding. Last check: 2007-10-21)
Mount Thielsen gets struck by lightening so much that some of the rocks on the spire have melted into a rare mineral called fulgurite.
The mountain trail changed from old ash from nearby defunct Mount Mazama to broken rock and rock plates.
Sitting up there on the ledge the idea of climbing Mount Thielsen was better than climbing it.
www.gimpslice.com /Hiking/Oregon_Hiking/Mount_Thielsen/thielsen_III.html   (439 words)

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