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  1. Mount Mazama - Wikipedia

    Mount Mazama (Klamath: Tum-sum-ne[5]) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. The volcano is in Klamath County, in …

  2. Mount Mazama - The Oregon Encyclopedia

    Mount Mazama is located in the southern part of the Cascade Range, about sixty miles north of the Oregon-California state line. It holds Crater Lake (giiwas in the Klamath language), at 1,943 feet the …

  3. Eruption History for Mount Mazama and Crater Lake Caldera

    Oct 31, 2023 · Mount Mazama was formed as a succession of overlapping cones and shields during a period of relatively continuous volcanic activity that lasted nearly half a million years, from about 420 …

  4. Geology of Mount Mazama - U.S. National Park Service

    Dec 6, 2022 · The boundary of Crater Lake National Park protects most of what remains of Mount Mazama, an ancient volcano that once loomed around 12,000 ft (3,700 m) skyward, amongst the …

  5. Crater Lake | Volcano World | Oregon State University

    Mount Mazama was one of the major Quaternary volcanoes of the Cascade Range. The summit of Mount Mazama was between 11,000-12,000 feet (3,300-3,700 m) prior to the climatic eruption.

  6. Thousands of years ago, Mount Mazama stood at 12,000 feet

    Apr 3, 2024 · Some 7,800 years ago — more than 3,000 years before the Egyptian pyramids were built — a super-volcano, Mount Mazama, blew its top. It was the greatest Cascades explosion in the past …

  7. Mount Mazama | volcano, Oregon, United States | Britannica

    When the Mount Mazama volcano in Oregon exploded at about 7,700 bp (radiocarbon-dated by burned wood), 70 cubic kilometres (about 17 cubic miles) of debris were thrown into the air, forming the …

  8. Crater Lake - Global Volcanism Program

    The spectacular 8 x 10 km Crater Lake caldera in the southern Cascades of Oregon formed about 7,700 years ago as a result of the collapse of a complex of overlapping shield and stratovolcanoes known …

  9. Mount Mazama - Wikiwand

    Mount Mazama (Klamath: Tum-sum-ne[5]) is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. The volcano is in Klamath County, in …

  10. Mount Mazama and Crater Lake: Growth and Destruction of a …

    Before Crater Lake came into existence, a cluster of volcanoes dominated the landscape. This cluster, called Mount Mazama (for the Portland, Oregon, climbing club the Mazamas), was destroyed during …