Get our newsletter!  
 Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published.  VolcanoAdventures: Our professional team of volcanologists and photographers offers unique travel opportunities: volcano expeditions, photo tours, and relaxed walking & study tours.  The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world. Guaranteed tours:
: spaces available / : guaranteed / : few spaces left / : booked out Random pictures | | News
Saturday, Nov 11, 2006 Low-level earthquake activity continues at Fourpeaked volcano. Web camera views this past week show a typical steam plume rising several hundred meters above the summit. ... [more]
Saturday, Feb 26, 2005 The first known historic eruption of Fourpeaked volcano on the Alaska peninsula is taking its course. Several vents emitting gasses and ash have appeared on the glacier-topped volcano and are slowly melting the ice cap. ... [more]
Fourpeaked volcanoTypical eruption style: unspecified Fourpeaked volcano eruptions: 2006
| Time | Mag. / Depth | Distance | Location | | Thu, 9 Aug | | Thu, 9 Aug 13:22 UTC | M 1.6 / 55.5 km | 37 km | - 104km SW of Anchor Point, Alaska |
| Sun, 5 Aug | | Sun, 5 Aug 21:10 UTC | M 1.1 / 14.1 km | 32 km | - 105km SSE of Old Iliamna, Alaska | | Sat, 4 Aug | | Sat, 4 Aug 14:19 UTC | M 2.3 / 66.4 km | 24 km | - 117km NNW of Kodiak Station, Alaska |
Background:Poorly known Fourpeaked volcano in NE Katmai National Park consists of isolated outcrops surrounded by the Fourpeaked Glacier, which descends eastward almost to the Shelikof Strait. The orientation of andesitic lava flows and extensive hydrothermal alteration of rocks near the present 2105-m-high summit suggest that it probably marks the vent of Fourpeaked volcano. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption of Fourpeaked in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall. --- Smithsonian / GVP volcano information
  More on VolcanoDiscovery: Volcano Special Tours: We organize tours to particularly active volcanoes and during ongoing eruptions for extended observation time from various viewpoints. These trips, exclusively for very small groups, are often announced only at short notice and require fast travel and flexibility. Each trip is accompanied by a volcanologist from our team. Examples include: Kilauea (Hawai'i), Colima (Mexico), Krakatau and many others. If you find the website useful and would like to support us and help keep it alive and improve it, please consider making a small donation. Thank you! Divergent plate boundaries in oceans: Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens. |
