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Golden Trout Creek, California, USA

Posted by agimarc on 2023-03-15
Posted in: America N, Volcanoes. Tagged: Basalt, cinder cone, domes, lava flows, monogenetic, Rhyolite, Sierra Nevada, Walker Lane. Leave a comment
Groundhog cinder cone in the Golden Trout Creek volcanic field, breached to the NE.  Image courtesy Rick Howard, 2002 via USFS and Smithsonian GVP
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Azas Plateau, Tuva Oblast, Russia

Posted by agimarc on 2023-03-01
Posted in: Asia, Volcanoes. Tagged: Azas Plateau, Basalt, Derbi-Taiga, glaciers, hyaoclastities, Shivit-Taiga, Tuva, tuya. 1 Comment
Overview of the SE portion of the Azas Plateau volcanic field.  Bii Khem river runs across the middle of the firld.  Note extensive U-shaped valleys and cirques.  Inset shows approximate position of photo.  Image courtesy Komatsu, et al, Aug 2007
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Volcan Telica, Nicaragua

Posted by agimarc on 2023-02-15
Posted in: America C & S, Volcanoes. Tagged: Andesite, eruption prediction, geothermal, Leon, Marribios, Nicaragua, Telica. 1 Comment
Active crater of Telica volcano.  Double crater clearly visible with the currently active crater in the foreground.  Image courtesy Geographical Features, Facebook, Aug 2020
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Mont Pelee, Martinique

Posted by agimarc on 2023-02-01
Posted in: America C & S, Volcanoes. Tagged: 1902, Debris avalanche, Martinique, nuee ardente, Pelee, Pyroclastic flow, Sanit Pierre. 5 Comments
Summit of Pelee with newly constructed dome from 1929 – 1932 eruption sequence.  Image courtesy Martinique Natural Park via Volcano Discovery, Dec 2020
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The Dakataua Caldera and Crater Lake, PNG

Posted by agimarc on 2023-01-15
Posted in: Asia, Volcanoes. Tagged: Andesite, Caldera, Dakataua, hydrothermal, New Britain, Obsidian, Talasea, Willaumez. 1 Comment
Dakataua caldera and lake.  Screen capture via Google Maps
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Does a Caldera Form the Islands of the Four Mountains, Alaska?

Posted by agimarc on 2023-01-01
Posted in: America N, Volcanoes. Tagged: Aleutians, Andesite, Caldera, Carlisle, Cleveland, hydrothermal, ignimbrite, Islands of Four Mountains, Tana. Leave a comment
Islands of the Four Mountains with volcanoes named.  Image courtesy Quantum Spatial Photo, via Power, et al, Dec 2020 via Volcano Discovery
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Gunung Semeru, East Java, Indonesia

Posted by agimarc on 2022-12-15
Posted in: Asia, Volcanoes. Tagged: Andesite, Bromo, debris flow, Lahar, Pyroclastic flow, Semeru, Tengger. 7 Comments
Morning view across Bromo – Tengger and Sandsea caldera toward Semeru in eruption.  Image courtesy Tan Yilmaz, flickr, Aug 2008
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Kulshan Caldera and Mount Baker Volcanic Field, Washington State, USA

Posted by agimarc on 2022-12-01
Posted in: America N, Volcanoes. Tagged: Andesite, Debris avalanche, debris flow, Fumarole, Hannegan Caldera, Kulshan Caldera, Lahar, Mount Baker, rhyodacite, Tapps Lake, Washington. 2 Comments
Glaciated Mount Baker from neighboring Mount Shuksan.  Area to the right is the Kulshan Caldera.  Jagged peak is glacially eroded basalts of Mount Shukshan.  Image courtesy Lee Siebert, 1971, Smithsonian GVP
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Volcan Darwin, Galapagos Islands, Ecuador

Posted by agimarc on 2022-11-15
Posted in: Pacific Islands, Volcanoes. Tagged: a'a, Beagle, Caldera, Darwin, Galapagos, Isabela, Tagus, tuff ring. 2 Comments
Satellite photo of Volcan Darwin and satellite pyroclastic cones Tagus and Beagle at lower left.  Screen capture from Google Maps
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Revisiting Menengai Crater, Kenya

Posted by agimarc on 2022-11-01
Posted in: Africa, Volcanoes. Tagged: Basalt, Caldera, extension, geothermal, Kenya Rift valley, Menengai, Trachyte, Tuff. 1 Comment
Rim of Menengai crater.  Note multiple layers capping the scarp.  Image courtesy Kenya Geographic, Dec 2010
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  • Recent Posts

    • Golden Trout Creek, California, USA 2023-03-15
    • Azas Plateau, Tuva Oblast, Russia 2023-03-01
    • Volcan Telica, Nicaragua 2023-02-15
    • Mont Pelee, Martinique 2023-02-01
    • The Dakataua Caldera and Crater Lake, PNG 2023-01-15
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