Henrik taught us about what he called gemmology – the knowledge of gemstones, which he said was considered to be part of the geosciences and specifically a branch of mineralogy. It is also a subject closely related to volcanology. Many gemstones form deep underground, and rely on volcanoes to bring them to the surface and…
In the previous post Gijs described the surprising history of Europe’s most underestimated volcanic field. Much of the time the Eifel does nothing. On occasion it does a small eruption, just when you weren’t looking. And very rarely, it goes big, covering the surrounding areas in meter-thick ash. Gijs described the area, the monogenetic volcanoes,…
Think of one thing that has interested you for as long as you can remember, or at least for so long the level of factual knowledge you have of it is almost ridiculously vast. That one thing that always brightens up your day when you hear or read something about it, no matter how busy…