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Zufallsfotos
Freitag, Sep 14, 2012
An M 2.4 earthquake occurred beneath the summit of Mount Rainier at 08:45 PDT, September 13, and was followed by a dozen or so aftershocks over the next ~20 minutes. ... [mehr]
 

Mount Rainier Vulkan

Schichtvulkan 4329 m / 14,409 ft
Washington, USA, 46.85°N / -121.76°W
Aktueller Status: ruhend (1 von 5)
Mount Rainier Webcams / aktuelle Daten
Mount Rainier volcano books
Last update: 3 Jul 2013 (M 2.4 shallow earthquake beneath the north rim of East Crater on 13 Sep)
Typische Aktivität: Explosiv
Ausbrüche des Mount Rainier: 1894, 1882(?), 1879(?), 1870(?), 1858(?), 1854(?), 1843(?), 1825(?), 300 BC, 520±200 BC, 3400 BC, 3600 BC, 3650 BC, 4400 BC, 4900 BC, 5300 BC, 5400 BC, 6800 BC
UhrzeitMag. / TiefeDistanceOrt
Thu, 25 May
Thu, 25 May 04:20 UTCM 0.6 / 1.2 km1 km- 27km NNW of Packwood, Washington
Wed, 24 May
Wed, 24 May 21:31 UTCM 0.6 / 1.4 km1 km- 28km NNW of Packwood, Washington
Wed, 24 May 00:12 UTCM 1.5 / 1.2 km35 kmExplosion - 14km ESE of Enumclaw, Washington
Tue, 23 May
Tue, 23 May 03:38 UTCM 0.8 / 17.1 km28 km- 14km ESE of Buckley, Washington
Tue, 23 May 00:40 UTCM 1.3 / 4.4 km26 km- 13km W of Packwood, Washington
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Mount Rainier, the highest peak in the Cascade Range, is located 87 km SE of Seattle and forms a majestic backdrop to the landscape of the region. The volcano is covered by 26 main glaciers, and melting of glacial ice by a future eruption causing lahars are a significant hazard for the region.
Reported 19th-century eruptions can not be verified by any deposits, but it is likely that some phreatic activity took place in 1894.
Previous eruptions have produced large debris avalanches and lahars, some of which have traveled all the way to the Pacific Ocean and reached Puget Sound.

Beschreibung:

Mount Rainier is a typical andesitic stratovolcano. It has produced large lahars and debris avalanches. Its present summit was built within a large crater breached to the northeast formed by collapse of the volcano during a major explosive eruption about 5600 years ago, that produced the widespread Osceola Mudflow.
Mt Rainier's eruptive history has been studied in detail. It includes about a dozen major eruptions during the past 2600 years, the largest of which occurred about 2200 years ago.
The present-day summit cone is cut by two overlapping craters. Extensive hydrothermal activity is present in the summit craters. It has produced melting of glacial ice created a complex system of steam caves found in the summit icecap.

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