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Encyclopedia > Newberry Volcano
Newberry Volcano

Newberry Caldera, with Paulina Lake, East Lake, and Big Obsidian Flow
Elevation: 7,989 ft (2,435 m) (Paulina Peak)
Location: Oregon, USA
Range: Cascades
Coordinates: 43°41′21.09″N, 121°15′17.47″WCoordinates: 43°41′21.09″N, 121°15′17.47″W
Topo map: USGS Paulina Peak
Type: Shield volcano
Age of rock: < 600,000 years
Last eruption: ~690 AD
Easiest route: road to Paulina Peak
Map of Newberry Volcano and surroundings

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. It is not a typical shield volcano in that, in addition to erupting basaltic lavas, it also has erupted andesitic and even rhyolitic lava. Newberry Caldera showing Paulina and East Lakes, and Big Obsidian Flow. ... A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ... Official language(s) None Capital Salem Largest city Portland Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 9th 255,026 km² 420 km 580 km 2. ... The most general definition of a mountain range is a group of mountains bordered by lowlands. ... Mount Adams in Washington The Cascade Range is a mountainous region famous for its chain of tall volcanoes 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. ... Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ... Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ... Example of a topographic map with contour lines Topographic maps, also called contour maps, topo maps or topo quads (for quadrangles), are maps that show topography, or land contours, by means of contour lines. ... The United States Geological Survey (USGS) is a scientific agency of the United States government. ... Mountains can be characterized in several ways. ... Mauna Kea, a shield volcano, on the Island of Hawai‘i with a light dusting of snow. ... // The geological time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ... Eruption redirects here. ... Events Beginning of Wu Zetians Zhou Dynasty in China. ... Southern and northern Mount Everest climbing routes as seen from the International Space Station. ... Image File history File links Download high resolution version (480x638, 98 KB)United States Geological Survey map of the Newberry Volcano. ... Image File history File links Download high resolution version (480x638, 98 KB)United States Geological Survey map of the Newberry Volcano. ... Mauna Kea, a shield volcano, on the Island of Hawai‘i with a light dusting of snow. ... Mount Adams in Washington The Cascade Range is a mountainous region famous for its chain of tall volcanoes 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. ... Bend is a city located in Deschutes County, Oregon, United States. ... Basalt Basalt is a common gray to black volcanic rock. ... A sample of andesite (dark groundmass) with amygdaloidal vesicules filled with zeolite. ... Rhyolite Rhyolite is an igneous, volcanic (extrusive) rock, of felsic composition, with aphanitic to porphyritic texture. ...


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. Within the caldera there are two lakes (Paulina Lake and East Lake) many cinder cones, lava flows, and obsidian domes. Eruption redirects here. ... Crater Lake, Oregon A caldera is a volcanic feature formed by the collapse of a volcano into itself. ... Newberry Caldera, with Paulina Lake, East Lake, and Big Obsidian Flow Newberry Caldera is the caldera on Newberry Volcano, a shield volcano in central Oregon. ... A lake is a body of water surrounded by land. ... Pu‘u ‘Ō‘ō, a cinder-and-spatter cone on Kilauea, Hawaii Volcanic cones are among the simplest volcano formations. ... In computer programming jargon, lava flow is a problem in which computer code, usually written under less than optimal conditions, is put into production and then built on when still in a developmental state. ... Obsidian from Lake County, Oregon Top stone is obsidian, below that is pumice and in lower right hand is rhyolite (light color) Obsidian is a type of naturally occurring glass, produced from volcanoes when a fluid felsic lava cools rapidly and freezes without sufficient time for crystal growth, for example...


A deep gash in the northern caldera wall, dubbed The Fissure, is the end of a 29 mile (47 km) long series of fractures called the Northwest Rift Zone. Approximately 6100 years ago, fissure basalt flows erupted from the rift and covered part of Newberry's northwest flank.


A great deal of volcanic activity has occurred on Newberry's shield, which itself has one of the largest collections of cinder cones, domes, lava flows, and fissures in the world (local residents call these parasitic vents the "Paulina Mountains", as if they were their own mountain range). Most of the cinder cones are 200 to 400 ft (60 to 120 m) high and have shallow saucer-shaped summit craters. They are typically surrounded by basalt or andesite that erupted from their bases, forming large lava beds. On the northwest flank of the volcano, Lava Butte, located next to Highway 97 south of Bend, is a good example of this kind of cinder cone and lava bed. There are also about 20 rhyolite domes or fissures on the eastern, southern, and western flanks. Larger examples include McKay Butte on the west flank (580,000 years old), China Hat (780,000 years old) and East Butte (850,000 years old) on the far eastern base. The most general definition of a mountain range is a group of mountains bordered by lowlands. ... Lava Butte is a cinder cone located in Central Oregon, USA, just west of US Highway 97 between the towns of Bend, Oregon, and Sunriver, Oregon. ...


During the late Pleistocene and Holocene there have been six eruptive episodes; four rhyolitic (east half of the caldera) and two basaltic (on the flanks). The Pleistocene epoch (pronounced like ply-stow-seen) is part of the geologic timescale. ... The Holocene epoch is a geological period that extends from the present back about 10,000 radiocarbon years. ... Rhyolite Rhyolite is an igneous, volcanic (extrusive) rock, of felsic composition, with aphanitic to porphyritic texture. ... Basalt Basalt is a common gray to black volcanic rock. ...

  • South Obsidian Eruptive Episode: An estimated 12,000 calendar yrs ago, an obsidian dome and related obsidian flow erupted in the southeast part of the caldera.
  • East Rim Eruptive Episode: About 11,200 calendar yrs ago (10,000 C14 yrs B.P.), mafic cinders, scoria, spatter, and lava flows erupted from a fissure on the east rim of the caldera.
  • Interlake Eruptive Episode: A series of rhyolitic eruptions began in the caldera approximately 7,300 calendar yrs ago (6,200 C14 yrs B.P.). They produced a widespread phreatomagmatic pumiceous tephra deposit, obsidian flows, large and small pumice cones, and a pumice ring. This eruptive episode probably lasted for about 200 years.
  • Northwest Rift Eruptive Episode: About 7,000 calendar yrs ago (6,100 C14 yrs B.P.), basaltic andesite lava and cinder cones erupted from extensive fissure vents on the northwest and south flanks of Newberry. Spatter and cinders also erupted from a fissure on the north caldera wall. The lava flows range up to 9 km long and are more voluminous at lower elevations. This eruptive episode probably lasted for less than 50 years.
  • East Lake Eruptive Episode: About 3,500 yrs ago, obsidian flows and associated pumice deposits in the caldera erupted from caldera ring fractures.
  • Big Obsidian Eruptive Episode: About 480 A.D. (1,470 calendar years B.P.), a 3-part sequence of rhyolitic eruptions began, which included an air-fall tephra, ash-flow tephra, and an obsidian flow, from a common vent at the base of the south caldera wall. The initial Plinian eruption 480 A.D. (1,580 C14 yrs B.P.) produced the Newberry pumice fall deposit which blanketed the east flank of the volcano and areas to the east. About 210 yrs later the Paulina Lake ash flow (1,310 C14 yrs B.P.) spread from near the south caldera wall to Paulina Lake. The final phase of the eruption produced the Big Obsidian Flow which covers 2.8 sq km.

Newberry's highest point is located 1500 ft (450 m) above the southern caldera floor on Paulina Peak, which is just one peak on the caldera rim. The volcano's south flank descends into the basaltic flatlands of central Oregon. In geology, mafic minerals and rocks are silicate minerals, magmas, and volcanic and intrusive igneous rocks that have relatively high concentrations of the heavier elements. ... Cinders are nut-sized pieces of red or black rock fragments resulting from the ejection of liquid lava that are uncemented vitric, vesicular, pyroclastic material, more than 2. ... Scoria Scoria is a type of igneous rock containing many gas bubbles, or vesicules. ... Look up lava, Aa, and pahoehoe in Wiktionary, the free dictionary. ... Tephra refers to air-fall material produced by a volcanic eruption regardless of composition or fragment size. ... The Volcanic Explosivity Index (VEI) was devised by Chris Newhall of the U.S. Geological Survey and Steve Self at the University of Hawaii in 1982 to provide a relative measure of the explosiveness of volcanic eruptions. ...


During the Apollo program, parts of the volcano that resemble the Moon's surface were used to train astronauts. Description Role: Earth and Lunar Orbit Crew: 3; CDR, CM pilot, LM pilot Dimensions Height: 36. ... Bulk composition of the moons mantle and crust estimated, weight percent Oxygen 42. ... U.S. Space Shuttle astronaut Bruce McCandless II using a manned maneuvering unit (MMU) outside the Challenger in 1984. ...


Geology

Newberry Caldera has existed possibly as long as 500,000 years, when the cone of the volcano is thought to have first collapsed. Subsequent caldera-forming collapse events have further deepened the caldera, but volcanic material and lakebed sediments have largely filled in much of this depth (see Newberry Caldera for details). they always explode Newberry Caldera, with Paulina Lake, East Lake, and Big Obsidian Flow Newberry Caldera is the caldera on Newberry Volcano, a shield volcano in central Oregon. ... Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of water or other liquid. ... Newberry Caldera, with Paulina Lake, East Lake, and Big Obsidian Flow Newberry Caldera is the caldera on Newberry Volcano, a shield volcano in central Oregon. ...


See also

Newberry National Volcanic National Monument was designated in November 1990 to protect the area around the Newberry Volcano in the United States. ...

References

  • USFS web page about Newberry (retrieved from Google Cache, July 2, 2005; PD source)
  • Fire Mountains of the West: The Cascade and Mono Lake Volcanoes, Stephen L. Harris, (Mountain Press Publishing Company, Missoula; 1988) ISBN 0-87842-220-X
Notable volcanoes of the Cascades Image:Mount Rainier from southwest mini.jpg
Mount Garibaldi | Mount Baker | Glacier Peak | Mount Rainier | Mount St. Helens | Mount Adams | Mount Hood | Mount Jefferson | Three Sisters | Newberry Volcano | Mount Mazama | Mount McLoughlin | Medicine Lake Volcano | Mount Shasta | Lassen Peak

www.google.ca Mount Adams in Washington The Cascade Range is a mountainous region famous for its chain of tall volcanoes 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. ... Image File history File linksMetadata Mount_Rainier_from_southwest_mini. ... Mount Garibaldi is a stratovolcano in the British Columbia part of the Cascade Range. ... Mount Baker (elevation 10,778 feet, 3,285 m) is a glaciated andesitic stratovolcano in the Cascades of Washington State in the United States about 30 miles (50km) due east of the city of Bellingham, Whatcom County. ... Glacier Peak is the most remote of the five active volcanoes in Washington. ... Mount Rainier is a stratovolcano located 54 miles (87 km) southeast of Seattle, Washington, in the United States. ... Mount St. ... Mt. ... Mount Hood is an active stratovolcano in northern Oregon, in the Pacific Northwest region of the United States. ... For other mountains named Mount Jefferson, see Mount Jefferson Mount Jefferson is a possibly extinct stratovolcano in the Cascade Range and is the second-highest mountain in Oregon. ... The Three Sisters are three volcanic peaks of the Cascade Range, located about 15 miles SW from the nearest town of Sisters, Oregon. ... Mount Mazama is a destroyed stratovolcano in the Oregon part of the Cascade Range. ... Mount McLoughlin is a stratovolcano in the southern Oregon part of the Cascade Range. ... Medicine Lake Volcano is a large shield volcano in the northeastern California about 50 kilometres (30 miles) northeast of Mount Shasta. ... Mount Shasta, a 14,162-foot (4,322 m) stratovolcano, is the second-highest peak in the Cascade Range and the second-highest peak in California outside of the Sierra Nevada [1]. The mountain stands 10,000 feet (3,000 m) above the surrounding area and has an estimated volume... Lassen Peak, in Shasta County, California USA, is the largest plug dome volcano in the world and is the southernmost volcano in the Cascade Range. ...


  Results from FactBites:
 
Newberry Volcano - Wikipedia, the free encyclopedia (838 words)
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.
Newberry Volcano, Oregon - USGS Open-File Report 97-513 (5451 words)
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.
  More results at FactBites »

 
 

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