Search results
Results from the WOW.Com Content Network
The lava lakes at Ambrym volcano disappeared after a large eruption in December 2018. [12] For many years, Kīlauea had two persistent lava lakes: one in the Halemaʻumaʻu vent cavity within the summit caldera, and another within the Puʻu ʻŌʻō cone located on the east rift zone of the volcano. [13]
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.
Location Last eruption meters feet ... Soda Lakes: 1251: 4104 Holocene: Virgin Valley Caldera ... Pond Mountain Volcanic Center: 1517.904: 4980
The eruption rate of the MEVC has varied throughout its long volcanic history. When the volcanic complex started erupting at least 7.4 million years ago, it increased the rate of magmatism in the Northern Cordilleran Volcanic Province from 100,000 to 300,000 cubic metres (3,500,000 to 10,600,000 cubic feet) per year.
Lakes in calderas fill large craters formed by the collapse of a volcano during an eruption. Lakes in maars fill medium-sized craters where an eruption deposited debris around a vent. Crater lakes form as the created depression, within the crater rim , is filled by water.
The Mount St. Helens major eruption of May 18, 1980, remains the deadliest and most economically destructive volcanic event in U.S. history. [4] Fifty-seven people were killed; 200 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. [ 5 ]
Map of Long Valley Caldera Early winter in Long Valley, 2017. Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain.The valley is one of the Earth's largest calderas, measuring about 20 mi (32 km) long (east-west), 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.