Characteristics of both shield volcanoes and composite volcanoes
Volcanic arc
Cascade Volcanic Arc
Last eruption
690 AD[2]
Climbing
Easiest route
Road to Paulina Peak
U.S. National Natural Landmark
Designated
1976
Newberry Volcano is a large, active, shield-shaped stratovolcano located about 20 miles (32 km) south of Bend, Oregon, United States, 35 miles (56 km) east of the major crest of the Cascade Range, within the Newberry National Volcanic Monument. Its highest point is Paulina Peak. Newberry is the largest volcano in the Cascade Volcanic Arc, with an area of 1,200 square miles (3,100 km2) when its lava flows are taken into account. From north to south, the volcano has a length of 75 miles (121 km), with a width of 27 miles (43 km) and a total volume of approximately 120 cubic miles (500 km3). It was named for the geologist and surgeon John Strong Newberry, who explored central Oregon for the Pacific Railroad Surveys in 1855.
The volcano contains a large caldera, 4 by 5 miles (6.4 km × 8.0 km) in diameter, known as the Newberry Caldera. Within the caldera are two lakes: Paulina Lake and East Lake. The volcano and its vicinity include many pyroclastic cones, lava flows and lava domes; Newberry has more than 400 vents, the most of any volcano in the contiguous United States. Glaciers may have once been present at the volcano, though this remains contested. The area has a dry climate with low precipitation levels and little surface runoff.
The origin of the volcano remains somewhat unclear; while some scientists believe it originated from an independent hotspot, most evidence indicates that it formed from the subduction of the oceanic Juan de Fuca and Gorda tectonic plates under the continental North American Plate. Eruptive activity at Newberry Volcano began about 600,000 years ago and has continued into the Holocene, the last eruption taking place 1,300 years ago. Unlike other shield-shaped volcanoes, which often erupt basaltic lavas only, Newberry Volcano has also erupted andesitic and rhyolitic lavas. A popular destination for hiking, fishing, boating, and other recreational activities, the volcano lies within 19 miles (31 km) of 16,400 people and within 62 miles (100 km) of nearly 200,000 people, and it continues to pose a threat to life. Still considered an active volcano, it could erupt and produce lava flows, pyroclastic flows, lahars (volcanically induced mudslides, landslides, and debris flows), ashfall, earthquakes, avalanches, and floods. To track this threat, the volcano and its surroundings are closely monitored with sensors by the United States Geological Survey.
^ ab"Paulina Peak BM". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. Retrieved January 13, 2018.
^"Newberry". Global Volcanism Program. Smithsonian Institution. Retrieved 2020-09-21.
NewberryVolcano is a large, active, shield-shaped stratovolcano located about 20 miles (32 km) south of Bend, Oregon, United States, 35 miles (56 km)...
Newberry National Volcanic Monument was designated on November 5, 1990, to protect the area around the NewberryVolcano in the U.S. state of Oregon. The...
By volume, the two largest Cascade volcanoes are the broad shields of Medicine Lake Volcano and NewberryVolcano, which are about 145 and 108 cubic miles...
NewberryVolcano, it is part of Newberry National Volcanic Monument. At an elevation of 7,984 feet (2,434 m), it is the highest point on the volcano. The...
Island Park Caldera (Idaho, Wyoming) NewberryVolcano (Oregon) McDermitt Caldera (Oregon) Medicine Lake Volcano (California) Mount Okmok (Alaska) Valles...
Volcano are estimated to be at least 140 cu mi (600 km3) in volume, making Medicine Lake the largest volcano by volume in the Cascade Range (Newberry...
on[clarification needed] are found within the calderas of NewberryVolcano and Medicine Lake Volcano in the Cascade Range of western North America, and at...
system of small cinder cones on the northwest flank of NewberryVolcano, a massive shield volcano which rises to the southeast. The cinder cone is capped...
Deschutes National Forest and is located on the northern flank of NewberryVolcano near the city of Bend. Boyd Cave is between 75,000 and 400,000 years...
Garibaldi and Mount Meager massif (British Columbia) The most active volcanoes in the chain include Mount St. Helens, Mount Baker, Lassen Peak, Mount...
1966, NASA used the park's NewberryVolcano as a training location for Apollo astronauts. In 1990, the area around the volcano was designated as a national...
scientists a chance to study its recovery. Newberry National Volcanic Monument includes the area around NewberryVolcano in central Oregon. Cascade–Siskiyou...
density with many shields and monogenetic volcanic centers. After NewberryVolcano, Mazama is the second largest Quaternary volcanic edifice in Oregon...
to be a shield volcano. The Three Sisters Middle Sister South Sister The Husband The Wife Broken Top Mount Bachelor NewberryVolcano Also has the characteristics...
I.P. (eds.). A field guide to NewberryVolcano, Oregon (Report). Geological Society of America Field Guide 15: Volcanoes to Vineyards: Geologic Field Trips...
feet in elevation."Paulina Peak serves as the highest point of the NewberryVolcano, a large active stratovolcano that sits just 35 miles east of the crest...
starts within the Deschutes National Forest on the northern flank of NewberryVolcano and heads north into and near the city of Bend. The system continues...
volcanic field, Oregon NewberryVolcano, Oregon Amboy Crater, California Schonchin Butte, California Twin Buttes, California Capulin Volcano National Monument...
connected with the East Pacific Rise. At its west end, just past the NewberryVolcano, the BFZ terminates at the north-striking Sisters Fault, part of the...
found in the range is 510 °F (266 °C) at 3,075 feet (937 m) below NewberryVolcano's caldera floor. Forests of large, coniferous trees (western red cedars...
Washington near Vancouver NewberryVolcano in central Oregon near Bend Three Sisters in west central Oregon near Bend The following volcanoes were ranked "high...
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