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Conceivably, its eruption and that of the other tuff cones was triggered by the drainage of the caldera lake, which depressurized the magma system. [65] Half Cone erupted 840 ± 30 and 570 ± 40 years ago [194] and activity alternated between Vent Mountain and Half Cone. [57] Vent Mountain emplaced lava flows and tephra on the caldera floor. [194]
Newberry National Volcanic Monument was designated on November 5, 1990, to protect the area around the Newberry Volcano in the U.S. state of Oregon. [2] The monument was created within the boundaries of the Deschutes National Forest, which is managed by the U.S. Forest Service, and includes 54,822 acres (86 sq mi; 222 km 2) of lakes, lava flows, and geologic features in central Oregon.
Lake Toba (Indonesian: Danau Toba, Toba Batak: ᯖᯀᯬ ᯖᯬᯅ; romanized: Tao Toba) is a large natural lake in North Sumatra, Indonesia, occupying the caldera of the Toba supervolcano. The lake is located in the middle of the northern part of the island of Sumatra, with a surface elevation of about 900 metres (2,953 ft), the lake stretches ...
Cinder Cone is a cinder cone volcano in Lassen Volcanic National Park within the United States. It is located about 10 mi (16 km) northeast of Lassen Peak and provides an excellent view of Brokeoff Mountain, Lassen Peak, and Chaos Crags. The cone was built to a height of 750 ft (230 m) above the surrounding area and spread ash over 30 sq mi (78 ...
The Clear Lake Volcanic Field is a volcanic field beside Clear Lake in California 's northern Coast Ranges. The site of late- Pliocene to early Holocene activity, the volcanic field consists of lava domes, cinder cones, and maars with eruptive products varying from basalt to rhyolite. [2] The site's threat level is ranked "High" at #33 in the ...
A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is less dense than the surrounding country rock, which produces buoyant forces on the magma that tend to drive it upwards. [1] If the magma finds a path to the surface, then the result will be a volcanic eruption ...
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 ...
River systems. Waikato River, Kaituna River, Whanganui River. The North Island Volcanic Plateau (often called the Central Plateau and occasionally the Waimarino Plateau) is a volcanic plateau covering much of central North Island of New Zealand with volcanoes, lava plateaus, and crater lakes.
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