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Berkas:Mount Mazama eruption timeline.PNG

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Cataclysmic eruption to present. Eruptions of ash and pumice: The cataclysmic eruption started from a vent on the northeast side of the volcano as a towering column of ash, with pyroclastic flows spreading to the northeast. Caldera collapse: As more magma was erupted, cracks opened up around the summit, which began to collapse. Fountains of pumice and ash surrounded the collapsing summit, and pyroclastic flows raced down all sides of the volcano. Steam explosions: When the dust had settled, the new caldera was 5 miles (8 km) in diameter and 1 mile (1.6 km) deep. Ground water interacted with hot deposits causing explosions of steam and ash. Today: In the first few hundred years after the cataclysmic eruption, renewed eruptions built Wizard Island, Merriam Cone, and the central platform. Water filled the new caldera to form the deepest lake in the United States. Figure modified from diagrams on back of 1988 USGS map “Crater Lake National Park and Vicinity, Oregon.”
Sumber http://pubs.usgs.gov/fs/2002/fs092-02/ (saved as PNG)
Pambuek U.S. GEOLOGICAL SURVEY and the NATIONAL PARK SERVICE
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Gambar ini berada di domain umum di Amerika Serikat karena gamabar ini hanya mengandung bahan yang asli berasal dari Survei Geologi Amerika Serikat, sebuah badan Departemen Dalam Negeri Amerika Serikat. Untuk informasi lebih lanjut, lihat kebijakan hak cipta Survei Geologi Amerika Serikat resmi.

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Crater Lake is an example, it is located in Oregen and was made from a valcano, making a caldera.

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kini ko29 Maret 2006 12.24Miniatur untuak versi per 29 Maret 2006 12.24250 × 841 (187 KB)JkellySource: http://pubs.usgs.gov/fs/2002/fs092-02/ (saved as PNG) Author: U.S. GEOLOGICAL SURVEY and the NATIONAL PARK SERVICE Description: <blockquote>Cataclysmic eruption to present. Eruptions of ash and pumice: The cataclysmic eruption started from a ve

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