Get our newsletter!
Zu den weltweiten Vulkanreisen von Volcano-Adventures!
Volcanoes & Earthquakes - new app for Android
Volcanoes & Earthquakes - app for iPhone & iPad

Garantierte Reisen:
30. Mär - 6. Apr 2019: Heimat des Theseus - Saronischer Golf
2.-17. Mai 2019: Von Krakatau bis Bali - Java (Indonesien)
4.-11.(12.) Mai 2019: Faszination Vulkan - Santorin (Griechenland)
4.-12. Mai 2019: Feuerberge Siziliens - vom Stromboli zum Ätna - Äolische Inseln + Ätna
18.-26. Mai 2019: Feuerberge Siziliens - vom Stromboli zum Ätna - Äolische Inseln + Ätna
25. Mai - 1. Jun 2019: Etna Discovery - Vulkan Ätna (Sizilien/Italien
7.-12. Jun 2019: Adventure Volcano - Yasur Volcano Travel - Tanna Island (Vanuatu)
8.-23. Jul 2019: Von Krakatau bis Bali - Java (Indonesien)
3.-18. Sep 2019: Von Krakatau bis Bali - Java (Indonesien)
12.-20. Okt 2019: Feuerberge Siziliens - vom Stromboli zum Ätna - Äolische Inseln + Ätna
: Plätze frei / : garantiert / : Wenig freie Plätze / : Ausgebucht
Zufallsfotos
News

Keine News in dieser Ansicht.

 

Crater Lake Vulkan

caldera 2487 m / 8,159 feet
Oregon, USA (mainland exept Alaska), 42.93°N / -122.12°W
Aktueller Status: normal / ruhend (1 von 5)
Crater Lake Webcams / aktuelle Daten | Berichte
Crater Lake Vulkan-B cher
Typische Aktivität: Explosiv
Ausbrüche des Crater Lake: 2850 BC (?), 7627±150 years ago
UhrzeitMag. / TiefeDistanceOrt
Sun, 17 Feb 2019
Sun, 17 Feb 07:37 UTCM 1.0 / 1.4 km3 km30km S of Diamond Lake, Oregon (USA)
Crater Lake in the southern Cascade Range of Oregon, USA, is one of the most beautiful calderas in the world. It formed by the collapse of a massive stratovolcano known as Mount Mazama about 6850 years ago. The caldera measures 8x10 km in diameter and is filled with a lake of up to 600 m depth.
A small island, Wizzard Island, is a cinder cone that grew after the formation of the caldera. The caldera is part of Crater Lake National Park.

Beschreibung:

Prior to the formation of the caldera, Mount Mazama was a complex of overlapping shield and stratovolcanoes. It is located at the north end of the Klamath graben on the main N-S trending axis of the Cascades volcanoes.
The earliest stage of volcanism of Mazama volcano constructed at least five andesitic and dacitic shields and stratovolcanoes between about 420-40,000 years ago. A second phase of activity took place between 30,000 years ago and the caldera-forming eruption, building rhyodacitic lava domes and flows and associated pyroclastic rocks.

Caldera-forming eruption of Mount Mazama
The explosive eruptions (dated 5677 BC ± 150 years) triggering the collapse of the caldera was one of Earth's largest known eruptions in the past 10,000 years. It erupted about 50 cubic km3 of magma and ranks as VEI=7. Ash from the eruption was deposited as far as Canada and producing pyroclastic flows traveled 40 km from the volcano.
The deep blue lake is North America's second deepest lake, masuring almost 600 m. It fills the caldera to within 150-600 m of its rim.
Post-caldera eruptions took place within a few hundred years of caldera formation and constructed a series of small lava domes on the caldera floor, forming Wizard Island cinder cone, and the completely submerged Merriam Cone.
The latest eruptions produced a small rhyodacitic lava dome beneath the lake surface east of Wizard Island about 4200 years ago.

Crater Lake Fotos:




Letzte Satellitenbilder

 

Mehr auf VolcanoDiscovery:

Copyrights: VolcanoDiscovery und andere Quellen wie angegeben.
Verwendung von Bildern: Text und Fotos auf dieser Webseite sind urheberrechtlich geschützt. Weitere Verwendung und Kopieren ohne vorherige Genehmigung ist untersagt. Wenn Sie Fotos für private oder gewerbliche Zwecke nutzen wollen, kontaktieren Sie uns bitte.