Prominence It makes sense to look beyond the elevation of a volcano to judge its size. Europe’s largest volcano is not Etna. There are several higher volcanoes in the continent, with Elbrus as the ...

The age of the subducting oceanic crust ranges from 27 million years old in the south to 80 million years old to the north. The East Scotia Ridge spreading centre cuts through the Scotia Plate from ...

The convent and monastery were closed in the reformation of 1550. But life continued, punctuated by eruptions from Katla. The next big problem though came from the other mountains, from Grimsvotn. By ...

Deception Island Let’s get back to the real world. Deception Island measures 14 by 13 km. It is the tip of a mountain which measures 25 kilometers across: it is a substantial volcano. The central bay ...

It must be the only volcano named after a British ambassador to Spain. Mount St Helens was also known as the Mount Fuji of America: a perfect cone standing above the country side. The 1980 eruption ...

Eggs are of course far older than Easter. The silly question of what came first, the chicken or the egg, has a clear answer. The oldest egg that has been found (microscopically small) is from 600 ...

Toba has the typical internal plumbing of large caldera systems. It crowns an uplifted area of Sumatra that is 220 × 100 km across, linked to intrusions and crustal thickening. A deeper reservoir of ...

In the previous installment, we said that there were two main sources of volcanism, tectonic driven or hotspot driven. In order to simplify things, we will examine the life cycle of an Arc Volcano, ...

We have lost the magnificence of the night sky. From cities we can hardly see the brightest stars, and even in dark places 100 kilometers from any city, their lights reflected of the clouds above them ...

The approximate crustal thickness in the vicinity of Mexico City. The TMVB is rendered in beige, some of the volcanic features have been marked in blue, Nevado de Toluca and Popcatépetl with fat ...