Mount Mazama (Tum-sum-ne in the Native American language Klamath[5]) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. Most of the mountain collapsed following a major eruption approximately 7,700 years ago. The volcano is in Klamath County, in the southern Cascades, 60 miles (97 km) north of the Oregon–California border. Its collapse, due to the eruption of magma emptying the underlying magma chamber, formed a caldera that holds Crater Lake (Giiwas in the Native American language Klamath).[6] Mount Mazama originally had an elevation of 12,000 feet (3,700 m), but following its climactic eruption this was reduced to 8,157 feet (2,486 m). Crater Lake is 1,943 feet (592 m) deep, the deepest freshwater body in the U.S. and the second deepest in North America after Great Slave Lake in Canada.
Mount Mazama formed as a group of overlapping volcanic edifices such as shield volcanoes and small composite cones, becoming active intermittently until its climactic eruption 7,700 years ago. This eruption, the largest known within the Cascade Volcanic Arc in a million years, destroyed Mazama's summit, reducing its approximate 12,000-foot (3,700 m) height by about 1 mile (1,600 m). Much of the edifice fell into the volcano's partially emptied neck and magma chamber, creating a caldera. The region's volcanic activity results from the subduction of the offshore oceanic plate, and is influenced by local extensional faulting. Mazama is dormant, but the U.S. Geological Survey says eruptions on a smaller scale are likely, which would pose a threat to its surroundings.
Native Americans have inhabited the area around Mazama and Crater Lake for at least 10,000 years and the volcano plays an important role in local folklore. European-American settlers first reached the region in the mid-19th century. Since the late 19th century, the area has been extensively studied by scientists for its geological phenomena and more recently for its potential sources of geothermal energy. Crater Lake and Mazama's remnants sustain diverse ecosystems, which are closely monitored by the National Park Service because of their remoteness and ecological importance. Recreational activities including hiking, biking, snowshoeing, fishing, as well as cross-country skiing are available; during the summer, campgrounds and lodges at Crater Lake are open to visitors.
^ abc"Crater Lake". Global Volcanism Program. Smithsonian Institution. Retrieved May 9, 2018.
^"Mount Mazama". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved May 24, 2018.
^"Origin Stories of the Lake". April 4, 2020.
^"Crater Lake". Global Volcanism Program. Smithsonian Institution. Retrieved September 21, 2020.
MountMazama (Tum-sum-ne in the Native American language Klamath) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade...
formed around 7,700 (± 150) years ago by the collapse of the volcano MountMazama. No rivers flow into or out of the lake; the evaporation is compensated...
genus name of the Brocket deer MountMazama, a destroyed stratovolcano in Oregon whose caldera contains Crater Lake The Mazamas, a mountaineering club based...
magma erupted in this event is equal to 2 km3. The 7,700 BP eruption of MountMazama was a large catastrophic eruption in the U.S. state of Oregon. It began...
Oregon. The park encompasses the caldera of Crater Lake, a remnant of MountMazama, a destroyed volcano, and the surrounding hills and forests. The lake...
Skell fought with the Spirit of the Below-World, Llao, who resided at MountMazama, by throwing hot rocks and lava, probably representing the volcanic eruptions...
a great battle with the sky god, Skell, which caused the eruption of MountMazama, creating Crater Lake. The Klamath tell many stories of the powerful...
Cascades: Major volcanic centers include Mount Hood, Three Sisters / Broken Top, MountMazama (Crater Lake), and Mount Jefferson. All have produced diverse...
The Mazamas (/məˈzɑːməz/) is a mountaineering organization based in Portland, Oregon, United States, founded in 1894. The Mazamas has been an important...
Lake's last eruption as MountMazama was large enough to cause its cone to collapse, and Mount Rainier's closest neighbor, Mount St. Helens, produced the...
eruptions as MountMazama (Crater Lake) about 7,500 years ago, the Mount Meager massif (Bridge River Vent) about 2,350 years ago, and Mount St. Helens in...
She was named for MountMazama, a collapsed volcano in the Cascade Range in Oregon whose caldera is now occupied by Crater Lake. Mazama built as an ammunition...
throughout much of northern North America. The ash was ejected from MountMazama, a volcano in south-central Oregon, during its climactic eruption about...
chief. Skell fought with Spirit of the Below-World, Llao, who resided at MountMazama by throwing hot rocks and lava, probably representing the volcanic eruptions...
is potentially linked to the environmental changes at the time (see MountMazama), which remained preserved in oral history of the North American cultures...
southern Oregon their home for long enough to witness the eruption of MountMazama. It was a legendary volcanic mountain who is the creator of Crater Lake...
Cappy Mountain MountMazama Over 7,000 years ago, MountMazama erupted, causing its original edifice to be turned into a caldera instead. Mount Scott (Klamath...
United States Mount Aniakchak (Aniakchak National Monument and Preserve) (Alaska) Cochetopa Caldera (Colorado) Crater Lake on MountMazama (Crater Lake...
island is 315.85 acres (127.82 ha). Wizard Island was created after MountMazama, a large complex volcano, erupted violently approximately 7,700 years...
Tecapa (Usulután Department, El Salvador) MountMazama (Crater Lake) and Wizard Island (Oregon, United States) Mount St. Helens and associated lava domes,...
volcanic field, lava domes, and cinder cones Mount Bailey (Oregon), a shield volcano and tephra cone MountMazama, a stratovolcano, shield volcano, caldera...
15 km3 (3.6 cu mi) of basaltic andesite. Mount Bailey (north of MountMazama) Mount Thielsen (east of Mount Bailey) — highly eroded volcano with a prominent...
little or no cloud cover during the summer. Hillman Peak was created when MountMazama, a large stratovolcano erupted violently approximately 7,700 years ago...
which may be the most extensive Cenozoic mafic suite in North America. MountMazama, a large composite volcano in south-central Oregon, consists of several...
8,000 years ago, and is entirely covered with Mazama Ash from the catastrophic eruption of MountMazama about 6,845 years ago. There is no geothermal...
the rock found in local reserves. One of the most famous volcanoes was MountMazama that erupted 7,700 years ago in Oregon and deposited 300 feet of pumice...
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