cuda-natury: Crater Lake

Evidence: 100 • authority: 72

Crater Lake (Klamath: Giiwas) is a volcanic crater lake in south-central Oregon in the Western United States. It is the main feature of Crater Lake National Park and is a tourist attraction known for its deep blue color and water clarity. The lake partly fills a 2,148-foot-deep (655 m) caldera that was formed around 7,700 (± 150) years ago by the collapse of the volcano Mount Mazama. No rivers flow into or out of the lake; the evaporation is compensated for by rain and snowfall at a rate such that the total amount of water is replaced every 150 years. With a depth of 1,949 feet (594 m), the lake is the deepest in the United States. In the world, it ranks tenth for maximum depth, as well as…

Evidence: 43 • authority: 72

Kurile Lake (Russian: Кури́льское о́зеро, romanized: Kuríl'skoye Ózero) is a caldera and crater lake in Kamchatka, Russia. It is also known as Kurilskoye Lake or Kuril Lake. It is part of the Eastern Volcanic Zone of Kamchatka which, together with the Sredinny Range, forms one of the volcanic belts of Kamchatka. These volcanoes form from the subduction of the Pacific Plate beneath the Okhotsk Plate and the Asian Plate. Before the Kurile Lake caldera formed, the Pauzhetka caldera was active during the Pleistocene, and was the origin of the Golygin ignimbrite at 443,000 ± 8,000 years old. The Kurile Lake caldera erupted 41,500 years ago, and another small eruption occurred between 9,000 and 1…

Evidence: 43 • authority: 72

Taal Volcano (IPA: [taʔal]; Tagalog: Bulkang Taal), also known as Taal Caldera, is a large caldera filled by Taal Lake in the Philippines. Located in the province of Batangas about 50 kilometers (31 mi) south of Manila, the volcano is the second most active volcano in the country, with 39 confirmed historical eruptions, concentrated on Volcano Island, near the middle of Taal Lake. The caldera was formed by prehistoric eruptions between less than 670,000 and less than 6,000 years ago. The cones Batulao, Macolod, and Sungay are remnants of the early pre-caldera Taal system, with Batulao being the earliest known cone. Taal Volcano has had several violent eruptions in the past, causing deaths o…

Evidence: 36 • authority: 88

Mount Mazama and Crater Lake caldera, Oregon. Abstract Most of Mount Mazama lies within Crater Lake National Park in southern Oregon; its lower flanks are within Rogue River and Winema National Forests. Access to the rim of Crater Lake caldera is excellent, via paved roads from Oregon 62 and 230, but Mazama’s flanks within the park are generally only reachable by hiking trails. This guide serves for a long one-day excursion through the park, concentrating on features near the caldera rim road, with additional points of interest that could be visited on a second day. New U.S. Geological Survey 7 1/2-minute topographic maps covering Mount Mazama and adjacent areas were published in 1985 at a…

Evidence: 29 • authority: 80

Geologic map of Mount Mazama and Crater Lake Caldera, Oregon, including the database for the geologic map of Mount Mazama and Crater Lake Caldera, Oregon

Evidence: 21 • authority: 72

Lake Nemrut (Turkish: Nemrut Gölü; Armenian: Նեմրութ, Kurdish: Gola Nemrûdê) is a freshwater crater lake in Bitlis Province, eastern Turkey. It is part of Nemrut Caldera (Turkish: Nemrut Kalderası), a volcanic caldera atop Volcano Nemrut. The government of Turkey has named as its 14th Wetland of International Importance the Nemrut Caldera (4,589 hectares). With its structural morphology that is unique in Turkey, the site qualifies for the Ramsar List under Criterion 1 on "representative, rare, or unique examples of a natural or near-natural wetland type found within the appropriate biogeographic region".

Evidence: 21 • authority: 72

A volcanic crater lake, or simply crater lake, is a lake in a crater that was formed by explosive activity or a collapse during a volcanic eruption. Water from various sources accumulates in the crater to form the crater lake.

Evidence: — • authority: 72

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 Pa…

Evidence: — • authority: 72

Mount Aniakchak (Russian: Аниакчак) is a volcano on the western Alaska Peninsula. Part of the Aleutian Volcanic Arc, it was formed by the subduction of the oceanic Pacific Plate under the North American Plate. Aniakchak is a 10 kilometers (6.2 mi) wide caldera with a break to the northeast. The caldera contains Surprise Lake and many volcanic cones, maars and craters, including Vent Mountain. The volcano has erupted mainly calc-alkaline rocks ranging from basalt to rhyolite. Activity began in the Pleistocene. Aniakchak is one of the most active volcanoes in Alaska and underwent several significant caldera-forming eruptions. The largest eruption is known as Aniakchak II and took place in 162…

Evidence: — • authority: 72

Mount Jefferson is a stratovolcano in the Cascade Volcanic Arc, part of the Cascade Range in the U.S. state of Oregon. The second highest mountain in Oregon, it is situated within Linn County, Jefferson County, and Marion County and forms part of the Mount Jefferson Wilderness. Due to the ruggedness of its surroundings, the mountain is one of the hardest volcanoes to reach in the Cascades. It is also a popular tourist destination despite its remoteness, with recreational activities including hiking, backpacking, mountaineering, and photography. Vegetation at Mount Jefferson is dominated by Douglas fir, silver fir, mountain hemlock, ponderosa pine, lodgepole pine, and several cedar species.…

Evidence: — • authority: 80

Mount Mazama: Explosion Versus Collapse

Evidence: — • authority: 72

USS Mazama (AE‑9) was a US Navy ammunition ship laid down 14 April 1942 by the Tampa Shipbuilding Co., Tampa, Fla.; launched 15 August 1943; sponsored by Mrs. Edward V. Rickenbacker; and commissioned 10 March 1944. She was named for Mount Mazama, a collapsed volcano in the Cascade Range in Oregon whose caldera is now occupied by Crater Lake.