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Mount Longonot, Kenya

Posted by agimarc on 2021-02-14
Posted in: Africa, Volcanoes. Tagged: Caldera, East African Rift, effusive, Kenya, Kenya RIft, Longonot, pyroclastic, Rift, Trachyte. 2 Comments
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Mount Longonot most recent caldera (pit crater) with line of pyroclastic craters down flank fissure on the north.  Massive lava flow on the flank visible on the lower left of the photo.  Image courtesy Lonely Planet

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The Deadly Eruption of Galeras, Columbia Jan 14, 1993

Posted by agimarc on 2021-02-01
Posted in: America C & S, Volcanoes. Tagged: amplitheater, Caldera, Carnegie Ridge, decade volcano, Dome, equipment, Galeras, Nazca Plate, Pasto, tornillo, vulcanian. Leave a comment
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Breached caldera and active cone at Galeras looking to the south.  Image courtesy LeChaudron de Vulcain, Oct 2019

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Ongoing Effusive Eruption at La Soufriere, St Vincent

Posted by agimarc on 2021-01-16
Posted in: America C & S, Volcanoes. Tagged: Andesite, Basalt, Caribbean, Dome, effusive, flank collapse, La Soufriere, St Vincent. 2 Comments

An effusive eruption began on La Soufriere volcano on St Vincent (St Vincent and the Grenadines) island in the eastern Caribbean Sea in Dec.  Note that this is currently an ongoing dome building eruption.

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Volcanoes of the Solomon Islands – Part 2 of 2

Posted by agimarc on 2021-01-01
Posted in: Pacific Islands. Tagged: Coleman Seamont, Gallego, Kana Keoki, Kavachi, Mbareke, Nggatokae, Savo, Vangunu. 2 Comments
Kana Keoki, Coleman Seamount and Rendova Volcano from Google Maps. Kana Keoki is left of center toward the edge of the image with a dual peak. It also looks a bit eroded. Neighboring Coleman Seamount has a clearly defined crater and looks a bit younger. Screen capture from Google Maps
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Volcanoes of the Solomon Islands – Part 1 of 2

Posted by agimarc on 2020-12-16
Posted in: Pacific Islands. Tagged: Andesite, Basalt, Kolombangara, Maetambe, New Georgia Islands, Nonda, Paraso, Rendova, Simbo, Solomon Islands, Vella Lavella. 5 Comments
Map of Solomon Islands and most of its volcanoes. Two active volcanoes are in yellow, Kavachi, center left, and Tinakula, lower right. Recently active volcanoes are in bright green. Dormant / extinct volcanoes are black. Bougainville Island in the upper left is part of Papua New Guinea, but also volcanic. New Georgia Island group center left is home to most of the volcanoes to be discussed in this post. Image screen capture from interactive map in Volcano Discovery
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The Sept 27, 2014 Phreatic Eruption of Mount Ontake, Japan

Posted by agimarc on 2020-12-01
Posted in: Asia, Volcanoes. Tagged: ballistics, fatalities, hikers, intrusion, mudflow, Ontake, Ontakesan, phreatic, pyroclastic. 1 Comment

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Ontake shortly after phreatic eruption on Sept 27.  Photo courtesy EOS.org, 2017

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The White Island Phreatic Eruption of Dec 9, 2019

Posted by agimarc on 2020-11-17
Posted in: Australia, Volcanoes. Tagged: Andesite, Bay of Plenty, Dacite, Havre Trough, hydrothermal, phreatic, Taupo Volcanic Zone, tourism, TVZ, Whakaari, White Island. 11 Comments

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White Island from helo Dec 10, the day after the eruption.  Note the new cover of ash, residual steam from the crater, and the significant outflow of mud into the surrounding ocean.  Image courtesy RNZ.co

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Mount Ruapehu, New Zealand

Posted by agimarc on 2020-11-01
Posted in: Australia. Tagged: Andesite, crater lake, Lahar, New Zealand, phreatic, Ruapehu, ski area, Taupo Volcanic Zone. 1 Comment

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Mount Ruapehu in eruption during 1995 eruption sequence.  Image courtesy TRTWorld blog, 2016

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Gunung Awu, Sangihe Island, Indonesia

Posted by agimarc on 2020-10-16
Posted in: Asia, Volcanoes. Tagged: Awu, Banua Wuhu, crater lake, Dome, Indonesia, Mindanao, Moloccan Sea, pyroclastic, Sangihe, Tahuna, Tamako. Leave a comment

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Mount Awu from a local village. May be Tahuna. Image courtesy Volcanomapping blog

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Mount Banahaw, PI The Mystic Mountain

Posted by agimarc on 2020-10-01
Posted in: Asia, Volcanoes. Tagged: Banahaw, Banahaw de Lucban, Banham Rise, Debris avalanche, Luzon, Macolod Corridor, Philippine Sea Plate, San Cristobal. Leave a comment

Mount Banahaw (or Banahao) is located on the island of Luzon, some 80 km SE of Manilla.  At 2,158 m high, it is the tallest of a group of a stratovolcano complex that included San Cristobal (1,470 M) and Banahaw de Lucban (1,870 M).

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    • Mount Longonot, Kenya 2021-02-14
    • The Deadly Eruption of Galeras, Columbia Jan 14, 1993 2021-02-01
    • Ongoing Effusive Eruption at La Soufriere, St Vincent 2021-01-16
    • Volcanoes of the Solomon Islands – Part 2 of 2 2021-01-01
    • Volcanoes of the Solomon Islands – Part 1 of 2 2020-12-16
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