Fisher Caldera, Alaska – The largest Caldera System in the State

Historically Active Volcanoes of Alaska. Image courtesy AVO. https://avo.alaska.edu/images/dbimages/display/1258656665_ak6.jpg

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Flank Collapse at Anak Krakatau, Dec. 22, 2018

Anak Krakatau a week following flank collapse eruption Dec. 22. The vent region has not yet been rebuilt above water level. Highest remaining part of the island is the hyaloclastic ring that used to host the most recent cone. Note also the island has been resurfaced and grown a bit. Image courtesy BBC News, Jan. 3 https://www.bbc.com/news/science-environment-46743362https://www.bbc.com/news/science-environment-46743362

Dome Inflation at Kikai Caldera, Japan

Satsuma Iojima Island on the rim of the Kikai Caldera. Iojima rhyolite dome is at the upper right. Inamura scoria cone is midway between the peninsula at the lower right and Iojima. Photo courtesy Getty via The Sun. https://www.thesun.co.uk/tech/5572129/underwater-supervolcano-eruption-kill-100-million-people-japan-lava-dome-science/

NISYROS – (re-)Visited

Nisyros: Caldera view from above Nikia village.

So far, when I wrote about volcanoes around the world, I could only dream of ever visiting them. Researching for my first Nisyros post, though, it occurred to me that the idea of a short holiday there was not entirely out-of-bounds. It didn’t take long and I had convinced daughter & granddaughter to come with me. We travelled to Nisyros in October, and, what can I say – it was a wonderful, if too short a holiday! Here are some impressions, thoughts and photos from our visit.

The Ugashik – Peulik Volcanic Center, Alaska

Mount Peulik with the Ukinrek Maars in the foreground. Phot courtesy Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Aerial_view_of_mountain_Peulik_ukinrek_maars.jpg

Recent Volcanic Activity in Nevada, USA – Part 2

Mud Springs volcano, Aurora – Bodie volcanic field. Lava flow is andesitic. Photo courtesy NASA Earth Observatory. https://earthobservatory.nasa.gov/IOTD/view.php?id=50493

Tin Can Island – Niuafo’ou Caldera, Tonga

Satellite photo of Niuafo’ou Volcano. Google Maps screen capture

NISYROS of the Twelve Islands (Greece)

Nisyros, view into the caldera with Stefanos Crater. (© stupiduglyfool, via mapcarta.com)

How many of the millions of sunshine-hungry European travellers to Greece would have known that there is the attraction of a fuming active volcano in their favorite holiday destination? And I am not talking famous Santorini here, but a little island with only a few hundred residents in the far south-east of the country, near the Turkish main land.

A VOLCANO WITH A TRAPDOOR – SIERRA NEGRA CALDERA (Galápagos, EC)

Volcán Chico, cinder cone on the north-eastern rim of the caldera Sierra Negra (© Michael R Perry, via wikimedia).

Sierra Negra volcano in the Galápagos Islands has piqued our attention once again. Reports of renewed activity are getting more convincing by the month. Here we are again – as advertised – at a “second largest caldera” or, more often even “second largest crater” in the world”… NOT! It seems that everyone accepts Yellowstone with its

Recent Volcanic Activity in SW Utah

Simplified map of volcanic fields in the western US that have been active during the Quaternary. http://geosphere.geoscienceworld.org/content/13/2/391/figures-only