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Photographer's Note

Picture of the Krafla volcano eruption in 1980.

Picture taken with a 300 mm f:5.6 without tripod, and with a Kodachrome 64 film scanned wit a Nikon coolscan V. For this (hot) shot, I could not possibly stand closer ...

I hope you get the feeling of it all, as I still do when I look at this 26 years' old image.

Iceland is located on the Mid-Atlantic Ridge. This plate boundary is spreading at a rate of about 2.5cm/yr which contributes in part to Krafla's volcanic activity. Rifting associated with the tensional stress of this divergent boundary can occur along the pre-existing Krafla fissure zone, where volcanic activity is concentrated. Krafla is located along the north-south trending neovolcanic zone in northern Iceland. It is one of five fissure swarm-central-volcano complexes within the axial rift zone. The Krafla fissure swarm itself is divided into two subswarms, a western and an eastern subswarm. Volcanic activity has been concentrated in the central and eastern portion of the fissure swarm since the last glacial, although prior to that volcanic activity was distributed to the west as well.

The presence of a hotspot underneath Iceland is the second and more important reason why there is an island located there and not at some other point along the Mid-Atlantic Ridge.

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Additional Photos by Michel Detay (mdetay) Gold Star Critiquer/Gold Note Writer [C: 487 W: 1 N: 1045] (4929)
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