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Big Winds

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Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Big Winds
Phone:
+1 541-386-6086

Address:
207 Front St, Hood River, OR 97031-2307

Newberry Volcano is a large active shield-shaped stratovolcano located 35 miles east of the major crest of the Cascade Range and about 20 miles south of Bend, Oregon, within the Newberry National Volcanic Monument. Its highest point is Paulina Peak. The largest volcano in the Cascade Volcanic Arc, it has roughly the same area as the state of Rhode Island at 1,200 square miles when its lava flows are taken into account. From its northernmost to southernmost point, the volcano is 75 miles in length, with a width of 27 miles and a total volume of approximately 120 cubic miles . It was named for the geologist and surgeon John Strong Newberry, who explored central Oregon for the Pacific Railroad Surveys in 1855, and the surrounding area has been inhabited by Native American populations for more than 10,000 years. Newberry Volcano possesses a large caldera 4 by 5 miles in diameter, called the Newberry Caldera. Within the caldera there are two lakes . The volcano and its vicinity feature many pyroclastic cones, lava flows, and lava domes; it 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 unclear, and the volcano is very dry with low precipitation levels and little surface runoff. Though Newberry Volcano's origins remain somewhat unclear, as some scientists think it originated from an independent hotspot, most evidence points to it resulting from the subduction of the oceanic Juan de Fuca and Gorda tectonic plates under the continental North American tectonic plate. Eruptive activity began about 600,000 years ago, and has continued into the Holocene, its last eruption taking place 1,300 years ago. Unlike other volcanoes with shield shapes, which often erupt basaltic lavas, the Newberry Volcano also has erupted andesitic and rhyolitic lavas. A popular destination for hiking, fishing, boating, and other recreational activities, the volcano lies within 19 miles of 16,400 people and within 62 miles of nearly 200,000 people, and continues to pose a threat. Still considered an active volcano, it could erupt and produce lava flows, pyroclastic flows, lahars , ashfall, earthquakes, avalanches, and floods. To monitor this threat, the volcano and its surroundings are closely monitored with sensors by the United States Geological Survey.
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From Wikipedia, the free encyclopedia.

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