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Topic: Newberry Volcano

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	Newberry Volcano - Wikipedia, the free encyclopedia
		Newberry Volcano 7,985 ft (2,434 m) high is a large shield volcano located 40 miles (60 km) east of the Cascade Range and about 20 miles (30 km) southeast of Bend, Oregon.
		The volcano is 20 miles (30 km) in diameter, has an approximate volume of 80 mile³ (330 km³), and it possesses a large oval-shaped caldera four by five miles in diameter, called the Newberry Caldera.
		Newberry Caldera has existed possibly as long as 500,000 years, when the cone of the volcano is thought to have first collapsed.
	en.wikipedia.org /wiki/Newberry_Volcano (838 words)

	Newberry Volcano, Oregon - USGS Open-File Report 97-513
		At Newberry, basaltic eruptions have occurred repeatedly on the volcano's flanks and in the caldera.
		As shown on the hazard-zonation map, the outline of zone LA broadly defines the elongate shape of Newberry volcano itself, consistent with the idea that the volcano has grown by the repeated eruption of lava from vents preferentially located on the north and south flanks and in the summit region.
		From studies at Newberry and other Cascade volcanoes and volcanic fields, we estimate that 10-20 m (33-66 ft) is a representative range for the average thickness of a field of lava flows that would accumulate during an eruptive period.
	www.geo.mtu.edu /department/classes/ge404/jmshaha/newberryt.html (5451 words)

	CVO Website - Newberry Caldera, Oregon
		Newberry volcano lies 65 kilometers east of the crest of the Cascade Range and is one of the largest Quaternary volcanoes in the United States -- its broad shield-like shape covers more than 1,300 square kilometers.
		The flanks of the volcano are composed of rhyolitic to andesitic pyroclastic-flow deposits, dacitic and rhyolitic lava flows and domes, and hundreds of scoria cones and lava flows of basalt and basaltic andesite.
		The most-visited part of the volcano is Newberry Crater, a volcanic depression or caldera at the summit of the volcano.
	vulcan.wr.usgs.gov /Volcanoes/Newberry/description_newberry.html (3510 words)

	Earthquake and Volcano Cams and Eruption News
		Visual observations of the volcano at the end of March by John Seach recorded a strong night glow at Benbow, and the sound of bubbling lava could be heard deep in the crater, accompanied by continuous light-brown ash emissions.
		Massive Veniaminof volcano, one of the highest and largest volcanoes on the Alaska Peninsula, is truncated by a steep-walled, 8 x 11 km, glacier-filled caldera that formed around 3,700 years ago.
		Nyiragongo volcano is one of eight volcanoes on the borders of Rwanda, the Democratic Republic of Congo and Uganda, a region dense with tropical forests and home to rare mountain gorillas.
	www.earthmountainview.com /volcanos.html (11766 words)

	Newberry Volcano: NEW hazard assessment published
		Deep blue lakes, cinder cones, and obsidian lava flows in the summit caldera of Newberry volcano are the result of recent eruptions.
		Although Newberry is presently quiet, when the volcano becomes restless, be it tomorrow or many years from now, the eruptive scenarios described herein can inform planners, emergency response personnel, and citizens about the kinds and sizes of events to expect.
		Newberry is a broad shield volcano built by thousands of eruptions, beginning about 600,000 years ago.
	volcanoes.usgs.gov /About/Highlights/NewberryHaz/NewberryHaz.html (383 words)

	Newberry National Volcanic Monument - Newberry Volcano
		Newberry Volcano is a shield shaped composite volcano, about 40 miles north-south and 25 miles east-west.
		The summit caldera of Newberry is approximately 5 miles east-west and 4 miles north-south.
		Julie Donnelly-Nolan of the U.S. Geological Survey is studing of the volcanic hazards of Newberry Volcano.
	www.fs.fed.us /r6/centraloregon/newberrynvm/newberryvol.shtml (841 words)

	104ho6 (Site not responding. Last check: 2007-10-20)
		Objective: Newberry Volcano, located in central Oregon, is one of the largest volcanoes in the Cascade Range.
		To do this, first divide the height of the volcano (in kilometers) by its radius (calculated using your answer to question 2b, a diameter that was also in kilometers).
		Where V is volume in km3, r is the basal radius of the volcano in km, and h is its height (inferred as the difference between its basal and peak elevations).
	www.ecsu.ctstateu.edu /personal/faculty/hyattj/ees104/104ho6.html (988 words)

	CVO Menu - Cascade Range Volcano Summary (Site not responding. Last check: 2007-10-20)
		The volcano is dominated by porphyritic andesite to rhyodacite lava and pyroclastic breccias, although several Quaternary basalt flows and breccias occur on the periphery.
		The Mountain is, however, the most dangerous volcano in the range, owing to the large population and to the huge area and volume of ice and snow on its flanks that could theoretically melt to generate debris flows during cataclysmic eruptions.
		The volcano is composed primarily of basalt and basaltic andesite lava flows, and has a 7 x 12 kilometer caldera at the center.
	www.ndsu.nodak.edu /instruct/ashworth/coursework/g106/radioactivedating/mazama.htm (8585 words)

	Top of Lava Butte 2 (Site not responding. Last check: 2007-10-20)
		A view of Newberry Volcano to the south.
		Newberry Volcano is a "shield" volcano, which roughly means that lava accumulates in a broad area underneath it, beneath a "shield." It covers 500 square miles, which makes it the largest ice-age volcano in Oregon.
		Newberry Volcano is considered active because it released lava as recently as 1300 years ago (the Big Obsidian Flow).
	karws.gso.uri.edu /Photo_shows/Oregon_Oct02/LavaButte2.html (127 words)

	Newberry National Volcanic Monument (Central Oregon) - a photoset on Flickr (Site not responding. Last check: 2007-10-20)
		Newberry National Volcanic National Monument includes 50,000 acres of lakes, lava flows, and spectacular geologic features in central Oregon.
		The summit area of Newberry Volcano holds two sparkling alpine lakes full of trout and salmon.
		Aerial view of Lava Butte.It is hard to fathom as you drive through the summit area that you are within a 17 square mile caldera at the summit of a 500 square mile volcano, a volcano that remains very active to this day.
	www.flickr.com /photos/vj_pdx/sets/1159807 (150 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		But the crater and monument areas are only small portions of a bigger volcano that stretches roughly 34 miles north and south at its longest points and 22 miles east and west at its widest.
		The volcano includes 400 cinder cones, which are simple volcanoes built primarily of particles of lava ejected from vents.
		Newberry is a gently sloping shield volcano rather than a steep-sided "stratovolcano" like many of the more lofty Cascade peaks.
	www.katu.com /printstory.asp?ID=59520 (362 words)

	Living With Volcanic Risk in the Cascades, Fact Sheet 165-97
		Several communities near the volcano, built on the deposits of giant lahars of volcanic ash and debris that are less than 1,200 years old, are at risk from similar future lahars.
		Because the population of the Pacific Northwest is rapidly expanding, the volcanoes of the Cascade Range in Washington, Oregon, and northern California are some of the most dangerous in the United States.
		Newberry Volcano, a broad shield covering more than 500 square miles, is capped by Newberry Crater, a large volcanic depression (caldera) 5 miles across.
	pubs.usgs.gov /fs/1997/fs165-97 (1624 words)

	Super Volcano Signs Supplement
		These are volcanoes that occur over "hot spots" in the Earth and they erupt every few hundred thousand years in catastrophic explosions, sending hundreds to thousands of cubic kilometers of ash into the atmosphere and wreaking climatic havoc on a global scale.
		Newberry Crater is now to be known on maps and in conversation as Newberry Volcano.
		The temporal deployment is intended to document chemical and physical signals that accompany this increased activity, to identify the underground locations of hydrothermal steam sources and the relationship of the Norris geyser basin to the background general seismicity, and crustal deformation of the Yellowstone caldera.
	www.signs-of-the-times.org /signs/signs_volcano_supplement.htm (6805 words)

	Newberry Volcano, Oregon
		Newberry volcano is about 20 miles (30 km) southeast of Bend and is one of the largest volcanoes in the Cascades.
		The volcano is made of basalt and basaltic andesite lava flows, andesite and rhyolite
		Additional information about Newberry volcano is presented on the Cascade Volcano Observatory homepage of the U.S. Geological Survey.
	volcano.und.nodak.edu /vwdocs/volc_images/north_america/newberry.html (579 words)

	New Page 1
		Newberry Volcano, one of the largest volcanoes in the conterminous United States, is a shield volcano built by hundreds of eruptions from 1.2 Ma to 1300 yr BP.
		The proposed study will focus on the abundant tephras documented on the southeastern sector of the volcano and will use a variety of methods to establish a coherent tephrastratigraphy.
		The goal of this work is to identify individual explosive events at Newberry Volcano, trace them to their sources, and constrain the number of events in order to assess the hazard potential of the volcano.
	dana.ucc.nau.edu /~bcd25/thesis.htm (223 words)

	Newberry National Volcanic Monument - Wikipedia, the free encyclopedia
		Newberry National Volcanic National Monument was designated in November 1990 to protect the area around the Newberry Volcano in the United States.
		The summit area of Newberry Volcano holds two alpine lakes full of trout.
		The park is also home to Lava River Cave.
	en.wikipedia.org /wiki/Newberry_National_Volcanic_Monument (173 words)

	DISTAL CORRELATION OF NEWBERRY VOLCANO TEPHRAS AND UPDATED TEPHRA STRATIGRAPHY FOR THE SUMMER LAKE SUB BASIN OF PLUVIAL ...
		Newberry volcano has a long history of silicic pyroclastic volcanism and has produced many extensive tephra deposits.
		During the last approximately 550,000 years, the volcano has erupted at least 60 rhyolitic and dacitic tephras that record a range of eruptive styles.
		Glass in Newberry tephras Paulina Creek, Ice Quarry, 9912D, 9920C, 984F, 984G5, 978D, 9917C, and 9881C tephras are highly similar to ash layers at Summer Lake.
	gsa.confex.com /gsa/inqu/finalprogram/abstract_55034.htm (535 words)

	Golden Gate Photo - Newberry Volcanic Gallery
		Newberry National Volcanic Monument covers over 50,000 acres (about 80 square miles) around the Newberry Caldera.
		The 4 to 5 mile wide caldera is the central crater of a shield volcano that covers 500 square miles (1,400 Km), one of the largest volcanic areas in the continental United States.
		On the northwest flank of the Newberry Volcano lie the fossil remnants of the forest that stood there about 6,000 years ago.
	www.goldengatephoto.com /westus/newberry.html (351 words)

	Skiing the Cascade Volcanoes: Newberry Volcano
		Newberry Volcano is the largest volcano in Oregon, a broad shield volcano with a huge area of 600 square miles (1500 square km) and massive volume of 110 cubic miles (450 cubic km) which are second only to Medicine Lake Volcano in the entire Cascade Range.
		Newberry is also much more developed, since it was declared a National Volcanic Monument in 1990.
		To the south lie hundreds of cinder cones dotting the southern flanks of Newberry itself, while to the north and east is the broad expanse of Newberry Crater with its two lakes, several obsidian flows, and Central Pumice Cone.
	www.skimountaineer.com /CascadeSki/CascadeSki.php?name=Newberry (911 words)

	Newberry National Volcanic Monument - Welcome
		In November of 1990, Newberry National Volcanic Monument was created within the boundaries of Deschutes National Forest.
		Newberry National Volcanic National Monument includes 50,000+ acres of lakes, lava flows, and spectacular geologic features in central Oregon.
		It is hard to fathom as you drive through the summit area that you are within a 17 square mile caldera at the summit of a 500 square mile volcano, a volcano that remains very active to this day.
	www.fs.fed.us /r6/centraloregon/newberrynvm/index.shtml (380 words)

	GORP - Newberry Crater National Monument, Oregon
		The Big Obsidian Flow within Newberry Crater is one of the geologic wonders of the Pacific Northwest, and, at 1,300 years old, it is the most recent volcanic eruption in Oregon.
		High-quality obsidian from Newberry Crater was traded throughout the Northwest.
		Newberry National Volcanic Monument was established by the U.S. Congress on Nov. 5, 1990, in order to "preserve and protect for present and future generations Newberry's remarkable geologic land forms.
	gorp.away.com /gorp/resource/us_nm/or_newbe.htm (1432 words)

	DLESE Find a Resource > Grades: High (9-12) (Site not responding. Last check: 2007-10-20)
		Since much of the range is made up of exotic terrains that probably did not evolve on the same spot on the Earth as the present North Cascades, the geologists confine their view to some time since the earliest Tertiary...
		Hellroaring Volcano and Underwood Mountain are mentioned as two older volcanoes associated with Mount Adams and are partially responsible for the numerous lava fields, which include Big Lava Bed, Goat Rocks Volcanic Field, Indian Heaven Volcanic Field, and the Simcoe Mountains volcanic field...
		The site explains that it is one of the youngest major Cascade volcanoes and that most of the mountain is a single mass of dacite rock, emplaced in a relatively short time...
	www.dlese.org:8080 /dds/browse_gr_02-2180.htm (649 words)

	Volcanoes of the Eastern Sierra Nevada
		Newberry is a shield volcano, formed by thousands of tiny eruptions over about 100,000 years (Sherrod, 1997).
		Since Newberry was formed by thousands of small eruptions, it has many layers of composite tuff, which are not as easily distinguishable as the Bishop Tuff (Deschutes, 2002).
		Before lava flows bisected the Newberry Caldera it had a diameter of 4 miles from north to south and 5.5 miles from east to west - not even half the size of the Long Valley Caldera.
	www.iub.edu /~sierra/papers/2002/pew.html (2636 words)

	MAPPING NEWBERRY VOLCANO'S EXTENSIVE NORTH FLANK BASALTS (Site not responding. Last check: 2007-10-20)
		Preliminary argon dating indicates that the farthest-traveled of the Newberry flows was the earliest at about 700 ka.
		A similar remanent direction is found in the tube-fed basalt of Arnold Cave and the Badlands on the lower NNE flank of Newberry, but the preliminary age is not the same.
		This basalt erupted from buried vents at least halfway up the north flank of the volcano and flowed through lava tubes west (through Lava River Cave) and north under downtown Bend to the southern edge of Redmond, diverting the former more easterly channel of the Deschutes River west to its present location.
	gsa.confex.com /gsa/2002CD/finalprogram/abstract_34405.htm (457 words)

	Evidence for Recent Uplift of Caldera Floor, Newberry Volcano, Oregon (Site not responding. Last check: 2007-10-20)
		This abstract and its related poster was presented at the AGU Fall Meeting in San Francisco, December 15-19, 1996.
		The caldera of Newberry Volcano in central Oregon has been the site of several silicic and mafic eruptions during the past 10,000 yr.
		To determine if uplift is continuing in modern times, data from at least three series of benchmarks (1931-1994), which completely transect Newberry Volcano and its caldera, should be examined.
	users.bendnet.com /bjensen/biblio/paulinup.html (357 words)

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