ArHo_holuhraun-20150304

Bárðarbunga, the End of the Eruption or…?

Fig 1. From Holuhraun lava field 4 March 2015. The central part of the crater Baugur (Circle) on March 4th, view to the North along the crater. The encrusted surface of the lava lake has collapsed. Its remains are now a course, black rubble at the bottom of the crater. Small vents of blueish gas…

The faults and slabs of the N Quadrant as revealed by the earthquake data from IMO (IanF & Deep Thought)

Ruminarian VII – Mass wasting…

Okay… what is a ruminarian?   Well, figuratively, we all are.   “Ruminate” is a slang term for standing around, thinking about something.   I adopted/co-opted the word to describe our activities, in part because it’s what we do, and also due to the sheep nature of the blog, following a hapless sheep incident that someone observed on…

Icelandic BBQ. Photograph copyright by Eggert Norðdahl.

Bárdarbunga – The Elevator to Hell

Due to me having had a couple of hectic weeks at my day job and catching this year’s influenza I have not gotten around to writing as much as I have wished. What I had wanted to do by now would have been to explain more in detail what is happening at the Icelandic eruption,…

Beautiful Lake Taupo, New Zealand. The only hint of its volcanic origin are the distant volcanoes on the horizon, built at the edges of the ring fault system. (Provenance unknown)

When Is a Caldera a Caldera?

It does not take long for a newcomer to volcano-watching, if we are to call our hobby that, to come across the term “caldera”, cauldron. The term is very loosely used to describe large volcanic depressions ranging from volcanic craters a few hundred metres in diameter up to the huge depressions left behind by the…