Magmatic or Tectonic Earthquake?

I get this question often about Iceland, especially when there is an earthquake swarm. The problem is that it is rarely clear cut if it is magmatic or tectonic when it happens in Iceland. First of all you have all of the rift zones being tectonic, but they are also subject to rift and hotspot…

Supersleep Sweet Little Yellowstone!

During the last couple of years I have argued that Yellowstone most likely is at the end of its life-cycle. There are many good reasons for me to believe that, let me first go through those before we move on to this week’s big news in Volcanology. Continental drift Yellowstone is currently moving into a Craton, a…

Eifel Volcanic Field II

Recently Nathan took you on a comfortable journey into the Eifel volcanic field. But what is the origin of this intraplate volcanism and where will the journey go? About 400 million years ago during the Devonian, the Age of Fish, when only plants and insects roamed the land, Laurussia and Gondwana converged into the supercontinent…

… 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…

A Tube’s Tale: Part 1 – formation

Lanzarote ranks as one of the most obviously volcanic places on the planet. The island is liberally sprinkled with craters, cones and lava fields. The dry, frost-free climate means that volcanic features weather only slowly, and vegetation has had a hard time gaining any meaningful foothold on the land. Around 15.5 million years ago the…