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Topic: Mount Aniakchak


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 [No title]   (Site not responding. Last check: 2007-10-09)
The slopes of Mount Griggs are heavily mantled by fallout from the 1912 Novarupta eruption.
The slopes of Mount Griggs are heavily mantled by fallout from the 1912 eruption of Novarupta volcano.
The summit of Mount Dutton is composed of a cluster of lava domes.
pubs.usgs.gov /dds/dds-40/captions.txt   (5245 words)

  
 Mount Warning   (Site not responding. Last check: 2007-10-09)
Mount Warning is a mountain in New South Wales, Australia, near the border with Queensland.
The name Mount Warning was given to the mountain in 1770 by Captain James Cook, as its distinct profile served as a warning to the dangerous Julian Rocks two kilometers offshore.
Mount Warning is the central remnant of an ancient volcano formerly twice the height of the current mountain, which erupted over 22 million years ago.
read-and-go.hopto.org /Supervolcanoes/Mount-Warning.html   (142 words)

  
 The Sudden Disappearance of Mount Katmai, Alaska Science Forum
Mount Katmai was a handsome mountain with three peaks poking more than 7,000 feet into the moist air of the Alaska Peninsula on June 5th, 1912.
Mount Katmai¹s transformation from mountain to crater lake is still a mystery to scientists because it imploded rather than exploded.
Researchers first thought that Mount Katmai was the source for most of the ash and rock that covers the valley.
www.gi.alaska.edu /ScienceForum/ASF15/1551.html   (653 words)

  
 Encyclopedia: Mount Aniakchak   (Site not responding. Last check: 2007-10-09)
Mount Aniakchak is a caldera (about 10 km in diameter) located in the Aleutian Range of Alaska, United States.
Aerial-view of the caldera of Mount Aniakchak from the west The Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska, United States.
A volcano is a geological landform (usually a mountain) where magma (rock of the Earths interior made molten or liquid by high temperature along with a reduction in pressure and/or the introduction of water or other volatiles) erupts through the surface of the planet.
www.nationmaster.com /encyclopedia/Mount-Aniakchak   (699 words)

  
 MSN Encarta - Alaska
Mount McKinley, North America’s largest mountain at 6,194 m (20,320 ft), is a defining highlight in Denali National Park and Preserve.
The second tallest mountain, Mount Saint Elias (5,489 m/18,008 ft), is located in Wrangell-Saint Elias National Park and Preserve, a park characterized by remote mountains, valleys, and wild rivers, all rich with wildlife.
In the Aniakchak National Monument and Preserve, the Aniakchak River cascades through a gash 500 m (1,600 ft) long at the rim of a volcano crater.
ca.encarta.msn.com /encyclopedia_761569148_9/Alaska.html   (1725 words)

  
 Aniakchak National Monument and Preserve - Wikipedia, the free encyclopedia
The Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska, United States.
The area was proclaimed a United States National Monument on December 1, 1978 and established as a National Monument and Preserve on December 2, 1980.
The Aniakchak region is part of the Pacific Ring of Fire, and the national monument consists of the caldera around Mount Aniakchak, with notable examples of several volcanic features - such as lava flows and cinder cones.
en.wikipedia.org /wiki/Aniakchak_National_Monument_and_Preserve   (165 words)

  
 Convienient list of online volcano-related publications   (Site not responding. Last check: 2007-10-09)
Syneruptive caldera collapse at Mount Katmai, 10 km east of the eruption site, and displacements elsewhere in the magmatic plumbing system generated 14 earthquakes in the magnitude range Ms 6 to 7 (extraordinarily energetic for volcanic seismicity) and as many as 100 greater than Ms 5.
The caldera-forming or climactic eruption of Mount Mazama drastically changed the landscape all around the volcano and spread a blanket of volcanic ash at least as far away as southern Canada.
Lahars at Mount Rainier can be classed in 3 groups according to their genesis: (1) flank collapse of hydrothermally altered, water-saturated rock; (2) eruption-related release of water and loose debris; and (3) hydrologic release of water and debris (Scott et al., 1985).
volcanoes.usgs.gov /Products/online.html   (7540 words)

  
 CVO Menu - America's Volcanic Past - Alaska   (Site not responding. Last check: 2007-10-09)
Mount McKinley, the highest mountain in North America at 20,320 feet, is at the heart of Denali National Park and Preserve.
Mount McKinley is primarily made of granite, which is very hard and resists weathering much better than its sedimentary (shale, limestone and sandstone) neighbors.
During the birth of Mount McKinley 56 million years ago when molten magma solidified deep beneath central Alaska, volcanic activity (eruptions at the surface) was also occurring in the park, and produced red, yellow and brown basalts, rhyolites, and other volcanic rocks.
vulcan.wr.usgs.gov /LivingWith/VolcanicPast/Places/volcanic_past_alaska.html   (1894 words)

  
 Mayan Majix - Articles - More Than Just Mount Spurr Ready to Rumble
The summit dome complex of Mount Spurr is largely covered in ice; its last known eruption was approximately 5,000 years ago.
Primary hazards from future eruptions at Mount Spurr and Crater Peak include far-traveled ash clouds, ash fall, pyroclastic flows, and lahars or mudflows that could impact drainages primarily on the south and east sides of the volcano.
Mount Veniaminof volcano is a young stratovolcano with an ice-filled 10-km (6 mi) diameter summit caldera located on the Alaska Peninsula, 775 km (480 mi) southwest of Anchorage and 35 km (22 mi) north of Perryville.
www.mayanmajix.com /art1261.html   (1017 words)

  
 Alaska, Walter R. Borneman - HarperCollins   (Site not responding. Last check: 2007-10-09)
As it is, 6,715-foot Mount Katmai is one of eleven 6,000-foot-plus mountains in Katmai National Park and Preserve and one of fifteen active volcanoes lining Shelikof Strait between the peninsula and Kodiak Island.
The Aniakchak River rises in Surprise Lake within the caldera and then cuts through its rim at the Gates, embarking on a rollicking thirty-two-mile journey to the sea.
Mount Shishaldin (9,372 feet) on Unimak Island towers above the strait and is one of those volcanoes with an almost perfect symmetry to its cone.
www.harpercollins.com /authorintro/catalog/excerpt_xml.asp?isbn=0060503076   (936 words)

  
 Mount Aniakchak -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-09)
The area around the volcano is the (additional info and facts about Aniakchak National Monument and Preserve) Aniakchak National Monument and Preserve, maintained by the (An agency of the Interior Department responsible for the National Parks) National Park Service.
Aniakchak is an extant (A mountain formed by volcanic material) volcano - at least ten (additional info and facts about lava flow) lava flows have occurred since the formation of the caldera, 3,400 years ago; the most recent was in 1931.
Surprise Lake within the caldera is the source of the (additional info and facts about Aniakchak River) Aniakchak River, a National Wild River.
www.absoluteastronomy.com /encyclopedia/M/Mo/Mount_Aniakchak.htm   (251 words)

  
 Katmai NP and Aniakchak NM & Preserve: Administrative History (Chapter 14)
The Aniakchak Crater Zone, which was "possibly 20 miles square," was nominated because it was "one of several recently active volcanoes on the Alaska Peninsula and Aleutian Chain which possess symmetrical beauty and possibly other values warranting conservation and/or interpretation." [1]
He mentioned the Aniakchak area in his report, but suggested that it be considered for parkland "at some future date." Allin also suggested that NPS officials pay "early attention" to the Service's two landmark programs.
The consultant found that "From no viewpoint is Aniakchak unimpressive," and it stated that the crater "is recognized by geologists as an outstanding feature, unmatched in many ways, by volcanic phenomena of far greater renown." The report's recommendations were quickly seconded by Interior Department officials.
www.nps.gov /katm/adhi/adhi14.htm   (6926 words)

  
 Geology of Aniakchak National Monument and Preserve   (Site not responding. Last check: 2007-10-09)
Aniakchak is cousin to America's Katmai, Redoubt, and Mount Saint Helens, and to Japan's Fuji, and Indonesia's Krakatau.
Aniakchak is a 6-mile-wide, 2,000-foot-deep caldera formed by the collapse of a 7,000-foot mountain.
In creating Aniakchak National Monument and Preserve, Congress recognized the unique geological significance of the caldera and also acknowledged the outstanding wildlife and recreational values of the Aniakchak River by designating it a wild river within the National Wild and Scenic Rivers System.
www2.nature.nps.gov /grd/parks/ania/index.htm   (941 words)

  
 Aniakchak National Monument & Preserve - Areaparks.com
The Aniakchak Caldera, is the result of a series of eruptions, the latest in 1931.
Nearly six miles in diameter and covering some ten square miles, it is one of the finest examples of dry caldera in the world.
Surprise Lake, located within the caldera, is the source of the Aniakchak River, which cascades through a 1,500-foot gash in the caldera wall.
aniakchak.areaparks.com   (144 words)

  
 Preview   (Site not responding. Last check: 2007-10-09)
Mount Rainier National Park, Washington – Has the largest collection of glaciers on one peak in the contiguous U.S. The mountain has 25 named glaciers and 50 smaller, unnamed glaciers and ice fields.
Aniakchak National Monument, Alaska –; Aniakchak is located on the Alaska Peninsula, part of the Aleutian volcanic arc.
The Aniakchak caldera is one of the youngest calderas in North America, erupting last in 1931 and is one of the finest examples of a dry caldera in the world.
www2.nature.nps.gov /geology/geologic_wonders/1_6list.htm   (521 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
New networks were installed at Mount Wrangell (one three-component station and three single-component stations,) in 2000-2001 and at Veniaminof Volcano (nine single-component stations) in 2001.
The seismic stations in the Veniaminof network were not recorded in 2001 because the telemetry network had not been completed before the end of the report period, thus was not considered to be seismically monitored.
Specific velocity models for Aniakchak Crater, Makushin Volcano, and Mount Wrangell have not been developed, thus the regional velocity model is used to locate hypocenters surrounding these volcanoes.
wrgis.wr.usgs.gov /open-file/of02-342/catalogavo.txt   (2561 words)

  
 Map 4 Travel - US Attraction : Monument : Mount Rushmore National Memorial   (Site not responding. Last check: 2007-10-09)
By the time his son, Lincoln completed the sculpture in 1941, each 60 foot high race was complete with a 20 foot long nose, eyes that reached 11 feet across and an 18 foot long mouth.
One of the most recognizable sculptures on earth, Mount Rushmore's " shrines to Democracy " honors both the vision its subjects, who shped a nation and the determination of Gutzon Borglum, who never live to see his colossal effort completed.
Please be aware that there are a limited number of free parking spots and the free parking lot is farther away from some of the attractions, a much larger lot is also there but it charges a fee.
www.usa4travel.com /attractions/monument/usa66.php   (233 words)

  
 Mount Angel, Oregon - Hutchinson encyclopedia article about Mount Angel, Oregon
Located 24 km/15 mi northeast of Salem, the city is named after a nearby butte (which stands 101 m/330 ft high).
Mount Angel Abbey was established on the butte in 1883 by Benedictine monks from Switzerland.
Every year, the religious community hosts a Bach festival in July, and an Oktoberfest.
encyclopedia.farlex.com /Mount+Angel%2c+Oregon   (134 words)

  
 v42b in fm97
The distribution of the deposit and its sedimentary characteristics are consistent with emplacement by tsunami and likely represents redeposition by tsunami of climactic fallout tephra and beach sand during the ca.
Mount Rainier is heavily glaciated and ice filled the volcano's flank canyons during much of the Pleistocene.
Lavas that erupted high on the volcano were deflected by valley glaciers and flowed along the glacier margins beside or atop ridges separating ice-filled valleys.
www.agu.org /cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm97&database=/data/epubs/wais/indexes/fm97/fm97&maxhits=200&="V42B"   (6684 words)

  
 Valley of Ten Thousand Smokes, Katmai National Park, Alaska
The 1912 Novarupta eruption was the largest eruption anywhere in the world in the 20th century, as an estimated 15 cubic kilometers of bubble-free magma (resulting in over 30 cubic kilometers of pumice and ash) was explosively erupted during 60 hours beginning on June 6.
Mounts Mageik and Martin (like Katmai, Trident, and Griggs) have active fumaroles and have undergone Holocene eruptions.
Mount Cerberus and Falling Mountain are Holocene dacite domes adjacent to the 1912 vent at Novarupta.
www.gps.caltech.edu /~meltzner/alaska98   (1591 words)

  
 Field work plans for summer 2002, Alaska Volcano Observatory
Scientists will return to Mount Veniaminof volcano from mid-July to mid-August to continue their geologic mapping of this massive ice-filled caldera and, if necessary, service seismic stations that were installed last summer (right photo).
As at Aniakchak Caldera on the Alaska Peninsula, Okmok Caldera also contained a large lake sometime after its most recent caldera-forming; this lake drained later catastrophically to form an enormous flood fan reaching all the way to the sea.
In mid July, a small team of scientists will visit Aniakchak volcano to service the network of seismic stations installed there in 1998 and focus on recently erupted volcanic deposits.
volcanoes.usgs.gov /Imgs/temp/avo/2002expand.html   (1593 words)

  
 L.L.Bean: Park Search - Aniakchak National Monument and Preserve   (Site not responding. Last check: 2007-10-09)
Aniakchak is a six-mile-wide, 2,000-foot-deep caldera formed by the collapse of a 7,000-foot volcanic mountain.
To the east, rugged bays and inlets of the Pacific coast and offshore islands provide habitat for sea mammals and sea birds.
Sockeye salmon spawn in Surprise Lake and the Aniakchak River.
www.llbean.com /parksearch/parks/html/15022gd.htm   (319 words)

  
 Mount McKinley -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-09)
Bradford Washburn et al Mount McKinley: The Conquest of Denali ((additional info and facts about Harry N. Abrams) Harry N. Abrams, 1991) ISBN 0810936119
Jonathan Waterman, Surviving Denali: A Study of Accidents on Mount McKinley 1903-1990 (American Alpine Club, 1991)
Art Davidson, Minus 148 Degrees: The First Winter Ascent of Mount McKinley, 3rd ed.
www.absoluteastronomy.com /encyclopedia/m/mo/mount_mckinley1.htm   (410 words)

  
 National Parks Passport Program - Pacific Northwest and Alaska Region   (Site not responding. Last check: 2007-10-09)
Aniakchak Wild River - No data available for this park...
Talkeetna is a small town southeast of Denali, and the jumping off point for climbers preparing to ascend Mount McKinnley.
This stamp is at the Henry M. Jackson Visitor Center on the south slope of Mount Rainier in the Paradise Valley.
nps.rudinoodle.com /NPS_PNWA.html   (1724 words)

  
 Alaska Volcano Observatory - Staff
"Aniakchak is an active volcano located on the Alaska Peninsula 670 kilometers southwest of Anchorage.
The most recent eruption at Aniakchak occurred in 1931 and was one of the largest explosive eruptions in Alaska in the last 100 years.
"Mount Spurr volcano, 125 km west of Anchorage, is the next-to-last Holocene volcano at the northeastern end of the Aleutian arc.
www.avo.alaska.edu /about/staff.php?dirid=20   (6056 words)

  
 Thermal Springs   (Site not responding. Last check: 2007-10-09)
Aniakchak National Monument is home to myriad volcanic features, one of which is a warm spring not far from Surprise Lake.
Mount Chiginagak, located on the Alaska Peninsula east of Mother Goose lake, is an active volcano.
When the weather is good we often fly next to the vigorous fumaroles pictured here.
www.airbornescientific.com /springs.htm   (343 words)

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