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Summary

Description
English: 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.”
Date 6 August 2008 (upload date)
Source http://pubs.usgs.gov/fs/2002/fs092-02/
Author U.S. GEOLOGICAL SURVEY and the NATIONAL PARK SERVICE, Nachgebaut von Benedikt.Seidl
Other versions Image:Mount_Mazama_eruption_timeline.PNG


This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: SVG. The original can be viewed here: Mount Mazama eruption timeline.PNG. Modifications made by Benedikt.Seidl.

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6 August 2008

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Date/TimeThumbnailDimensionsUserComment
current17:28, 6 August 2008Thumbnail for version as of 17:28, 6 August 20081,049 × 822 (26 KB)Benedikt.Seidl== Beschreibung == {{Information |Description= {{en|1=Cataclysmic eruption to present. ''Eruptions of ash and pumice:'' The cataclysmic eruption started from a vent on the northeast side of the volcano
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