Eyjafjarðar at Gjögurtá magmatic emplacement

As I am writing this I can’t help myself from remembering all the stuttering news-anchors trying to pronounce Eyjafjallajökull. Something tells me that they will not have an easier time with Eyjafjarðar at Gjögurtá. Yesterday I decided to put in a short piece about the earthquake swarm at Eyjafjarðar at Gjögurtá since I noticed how…

… but, it’s swollen.

This was originally going to be just a post, then I decided to make it into an article. Not so OT… if you can extend your thinking… “Spall are flakes of a material that are broken off a larger solid body and can be produced by a variety of mechanisms, including as a result of…

Katmai close to a nova rupta?

Commenter Luisport brought this to my attention. Following close to the centnerian celebration of the Katmai and Novarupta large eruption on the june sixth 1912, the volcanoes in question seem to have a slight case of being hungover. As many of my readers know Novarupta was responsible for the largest eruption during the last 197 years.…

Herðubreið – Renewed activity at Askja

Yesterday an earthquake swarm started with a 3.4M earthquake at Herðubreið. So far the swarm has had 15 earthquakes above 2M, among those 3 where at Askja proper. This swarm as well as the previous ones at Herðubreið have been to the west of the volcano. And those earthquake swarms have been deemed to be lateral intrusions…