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Decade Volcanoes – Set of sixteen volcanoes noted for their eruptive history and proximity to densely populated areas; Dense-rock equivalent – Volcanologic calculation to estimate eruption volume; Volcanic winter of 536 – Cooling period in Northern Hemisphere caused by volcanic eruptions; Geologic timeline of Western North America
Non-explosive eruptions of lava and less-violent explosive eruptions have occurred in and near the Yellowstone caldera since the last supereruption. [15] [16] The most recent lava flow occurred about 70,000 years ago, while a violent eruption excavated the West Thumb of Lake Yellowstone 174,000 years ago. Smaller steam explosions occur as well.
The Mount Meager massif is a group of volcanic peaks in the Pacific Ranges of the Coast Mountains in southwestern British Columbia, Canada.Part of the Cascade Volcanic Arc of western North America, it is located 150 km (93 mi) north of Vancouver at the northern end of the Pemberton Valley and reaches a maximum elevation of 2,680 m (8,790 ft).
A.D. 79: Mount Vesuvius, Italy. Mount Vesuvius has erupted eight times in the last 17,000 years, most recently in 1944, but the big one was in A.D. 17. One of the most violent eruptions in history ...
The Valles Caldera (or Jemez Caldera) is a 13.7-mile (22.0 km) wide volcanic caldera in the Jemez Mountains of northern New Mexico. [1] Hot springs, streams, fumaroles, natural gas seeps, and volcanic domes dot the caldera landscape. [4]
The 946 eruption of Paektu Mountain, a stratovolcano on the border of North Korea and China also known as Changbaishan, [1] occurred in late 946 CE. [2] [3] This event is known as the Millennium Eruption or Tianchi eruption. [4] It is one of the most powerful volcanic eruptions in recorded history; classified at least a VEI 6. [5] [6] [7]
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 ...
Ultra-Plinian eruptions are the largest of all volcanic eruptions are more intense, have a higher eruption rate than Plinian ones, form higher eruption columns and may form large calderas. These eruptions produce rhyolitic lava, tephra, pumice and thick pyroclastic flows that cover vast areas and may produce widespread ash-fall deposits.