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Aerial view of Mount Lassen with snow, early May 2018. Lassen Peak lies within Lassen Volcanic National Park, in Shasta County, California, 55 mi (89 km) east of the city of Redding. [4] Lassen Peak and the rest of the National Park area are surrounded by the Lassen National Forest, [5] which has an area of 1,200,000 acres (4,900 km 2). [6]
Lassen Volcanic National Park is one of the few areas in the world where all four types of volcanoes can be found: plug dome, shield, cinder cone, and stratovolcano. [ 4 ] The source of heat for the volcanism in the Lassen area is subduction of the Gorda Plate diving below the North American Plate off the Northern California coast. [ 5 ]
With the exception of the 1915 eruption of remote Lassen Peak in Northern California, the range was quiet for more than a century. Then, on May 18, 1980, the dramatic eruption of Mount St. Helens shattered the quiet and brought the world's attention to the range. Geologists were also concerned that the St. Helens eruption was a sign that long ...
Cinder Cone lies in Lassen and Shasta counties, in Northern California, within the United States.Located 1.5 mi (2.4 km) southwest of Butte Lake and 2.2 mi (3.5 km) southeast of Prospect Peak [1] (which dwarfs Cinder Cone), [2] it is also sometimes referred to as Black Butte or Cinder Butte. [1]
The Lassen volcanic area presents a geological record of sedimentation and volcanic activity in and around Lassen Volcanic National Park in Northern California, U.S. The park is located in the southernmost part of the Cascade Mountain Range in the Pacific Northwest region of the United States.
Lake Helen is a glacial lake or a tarn occupying a cirque at around 8,200 feet (2,500 m) in Lassen Volcanic National Park. [1] The lake is located to the south of Lassen Peak and west of Bumpass Mountain in the Shasta Cascades region of Northern California. Highway 89 runs along the lake's southern and eastern shore. [2]
The central vent of Brokeoff Volcano was located near modern Diamond Peak. Brokeoff Mountain in winter. After volcanism at Brokeoff ended, magmatism became more silicic and began migrating toward Lassen Peak's northern flank. The last 400,000 years have seen at least three known flows, parts of which are still on Raker Peak and Mount Conard.
Lassen National Forest is also the site of significant events in California history: Ishi Wilderness was the refuge of the "last wild Indian", [citation needed] Caribou Wilderness was one of the first protected "primitive areas" decades before the federal wilderness system was established, and the volcanic explosion of Mt. Lassen was the first ...