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  2. Timeline of volcanism on Earth - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_volcanism_on_Earth

    Supervolcano – Volcano that has had an eruption with a volcanic explosivity index (VEI) of 8; Trans-Mexican Volcanic Belt – Active volcanic belt that covers central-southern Mexico; Volcanic arc – Chain of volcanoes formed above a subducting plate; Volcanic explosivity index – Predictive Qualitative scale for explosiveness of volcanic ...

  3. Round Mountain (California) - Wikipedia

    en.wikipedia.org/wiki/Round_Mountain_(California)

    The volcano is credited with the creation of the High Valley through repeated eruptions the last of which is thought to have occurred 8,500–10,000 years ago. The result was an elevated valley at approximately 1,600 ft (490 m) in elevation with distinct ridgelines reaching up to 3,000 ft (910 m).

  4. Global Volcanism Program - Wikipedia

    en.wikipedia.org/wiki/Global_Volcanism_Program

    GVP's volcano and eruption databases constitute a foundation for all statistical statements concerning locations, frequencies, and magnitudes of Earth's volcanic eruptions during the last 10,000 years. Three print editions of Volcanoes of the World were published based on the GVP data in 1981, [3] 1994 [4] and 2010. [5]

  5. California Volcano Observatory - Wikipedia

    en.wikipedia.org/wiki/California_Volcano_Observatory

    According to USGS risk assessment of the volcanoes in CalVO's region, the following volcanoes were ranked "very high threat potential". [4] Mount Shasta in far-northern California, north of Redding; Lassen Volcanic Center in Lassen Volcanic National Park; Long Valley Caldera in eastern California; Mono-Inyo Craters. These were ranked "high ...

  6. Long Valley Caldera - Wikipedia

    en.wikipedia.org/wiki/Long_Valley_Caldera

    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.

  7. The Biggest Volcanic Eruptions in Human History

    www.aol.com/finance/biggest-volcanic-eruption...

    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 ...

  8. One of California's riskiest volcanoes has been seeing more ...

    www.aol.com/news/more-quakes-one-californias...

    The Long Valley Caldera, which includes Mammoth Lakes area, has been having seismic activity, which can precede a volcanic eruption. Scientists say not to worry. One of California's riskiest ...

  9. A powerful volcano is erupting. Here’s what that could mean ...

    www.aol.com/news/powerful-volcano-erupting-could...

    The eruption’s potential impacts to weather and climate are starting to come into focus, even as the danger posed by the volcano persists and evacuations continue.

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