In my last article I wrote about the Turkana, volcanism that is part of the Great African Rift. But unbeknownst to most this is just one of several rift systems in Africa that are tearing the continent apart. In this article we will be making an initial contact with an even larger, younger and far…
I readily admit to enjoying large scale volcanism. Yes, small scale volcanism like Tor Zawar may be a fun diversion, but it is the majestic scale that volcanism can take that get my juices flowing. By now I have touched upon most of the worlds large volcanic features at least in the passing, but there…
The facts of Eldgja are well established. We know approximately when it happened, where it happened, how much lava, tephra and sulphate was ejected. We have found the tephra in Greenland. We think we know the human impact over much of the northern world, arising from three years of winter. But on other aspects, our…
The previous post described what we think we know about the Eldgja eruption. Our knowledge about one of the largest eruptions in Iceland is somewhat limited, surprisingly so given that Iceland was already well populated. One of the few things which seems secure is the date. Eldgja is believed to date to 934 AD, continuing…
Iceland is the most volcanic place in the world. Explosive eruptions, from many different volcanoes, are common, unpredictable and, when seen from afar, exciting. But don’t be fooled. These volcanic explosions are small fry, and mostly harmless. Less common but far more devastating are the other type, responsible for 80% of all Icelandic lava and…
When you start to study volcanoes you inevitably start by studying the top of the volcano and you inevitably model your understanding about the volcano in reference to the cone or mountain that you see. Some volcanoes are even referred to as “perfect volcanoes” due to them being almost perfectly symmetrical. But, as we will…
The Judgement of Jupiter is a story written around 1495 in Germany and published under the pen name of Paulus Niavis. It tells of a case in the court of law of Jupiter. The accusation is parricide (destruction of the environment). The accused is a mine worker; the victim is Mother Earth. Mercury is the…
It is intriguing how differently two writers can interpret data. Both Albert and I have written about Jan Mayen, and out of basically the same available data we seem to interpret things quite differently. I expect that Albert and I are going to have quite some fun debating this article in the comment field, please…
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…
I have lately read a lot of comments about Iceland being boring and calm. In reality nothing could be more wrong, Iceland is brimming with activity. So, let us take a quick look at some interesting volcanoes before we go to the namesake of this article. Volcanic activity in general If we start in the…