Volcan de Colima, Mexico, and Momotombo, Nicuaragua

In the middle of an apparent lull in eye-catching activity elsewhere, our interest has been focused on two Central American volcanoes recently that both bear keeping an eye upon for different reasons. Colima has been active since 2013 and is the most active volcano in Mexico. It is covered by a couple of very good…

Notre petit nuage magique

In her 1948 novel “Trollkarlens hatt” (Finn Family Moomintroll), Finnish author Tove Jansson describes how on the first day of spring Moomintroll and his friends discover a large, black hat and bring it home without knowing that it is the Magician’s lost hat and that anything that stays in the hat too long will be…

The Volcanoes of the Galapagos Islands

Guest post for VolcanoCafé by René Goad   First of all I would like to thank Carl Rehnberg for inviting me to write a guest post and I will be talking a bit about the Galapagos Islands. For a good few years I’ve been wanting to visit the Galapagos Islands with the Sierra Negra Volcano…

Medicine Lake Volcano and Lava Beds National Monument

The more you read about volcanism in North America, the more confused you become by the immense complexity of eruptive phenomenae and sequences. As will be clear from my previous article about Mount Tehama (Lassen), it is not always a question about a single central volcano such as Vesuvius or Etna, but about a multitude…

The Volcanoes of the Three Sisters Area, Oregon

This is the third article in our series of re-posts. It is well worth noticing that it was first published well ahead of the volcanic crisis at Volcan Chilles on the border between Equador and Colombia which taught us that even if a volcano is thought to not have erupted for some 174,000 years, it…

Mount Tehama, Brokeoff Mountain and the Lassen Volcanic National Park

This article began as a regular piece on Lassen Peak but quickly expanded as I discovered how incredibly complex the geology and history of the Lassen Volcanic Complex was. Unlike nearby Shasta, Lassen Peak is but a dacite lava dome, one of the largest lava domes on Earth but only one of the dozens of…

The White Mountain, Úytaahkoo or Mount Shasta

Starting today, we begin to reproduce some of the more popular posts originally published on the old site. But don’t worry! We will continue to produce new posts as and when something of interest crops up! Volcanic activity in North America is surprisingly infrequent. In spite of there being no less than 255 volcanoes or…

The Enigma of the 79 AD Eruption of Vesuvius

The August 24th eruption of Vesuvius in 79 AD is the most famous and well-known volcanic eruption of all time. By now, volcanologists have pieced together the sequence of events to form a coherent and comprehensive picture and the only official dilemma is the actual date with meteorological evidence arguing a date towards the middle…

Trembles at Tjörnes

Although the 2,265 volcano-tectonic earthquakes at Planchon-Peteroa as reported yesterday by Georges Vitton (Le Chaudron de Vulcain) is perhaps the more interesting news, our readers are probably more interested in the large earthquake swarms in Tjörnes Fracture Zone. What is happening? Is it an eruption, is an eruption imminent or can an eruption be expected…

Hekla Ready to Erupt?

According to an article published today by journalist Kristján Kristjánsson on the Icelandic Internet news outlet Pressan, “Hekla is ready to erupt” and “tension is very high in the mountain”. The article, which is in Icelandic, goes on to quote (Professor) Páll Einarsson, the man who rightly won international acclaim in 2000 when he read…