Leirhnjúkur

Deutsch: Leirhnjúkur ist ein aktiver Vulkan in Island. Der Palagonitrücken befindet sich im Nordosten des Landes beim See Mývatn und ist Teil des Vulkansystems der Krafla. Der Berg, der auf einer vulkanischen Spalte sitzt, ist 592 m hoch und gehört zur Caldera der Krafla.

English: Leirhnjúkur is an active volcano, a hyaloclastic ridge, within the caldera of Krafla in the north of Iceland.

Français : Le Leirhnjúkur est un volcan actif situé au nord-est du lac Mývatn dans le système volcanique de Krafla, en Islande. Le champ hydrothermal comporte des fumerolles et des mares de boue.

Íslenska: Leirhnjúkur er virkt eldfjall í Kröflukerfinu á norðurlandi. Háhitasvæði er hjá eldfjallinu.

Aerial views: Volcanic fissures within a caldera

The aerial photographs show very well how volcanic fissures like Leirhnjúkur and others in its vicinity may even cut through the middle of caldera floors, in this case the Krafla Caldera.

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  Leirhnjúkur in the middle ground
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  As part of the volcanic fissure system within Krafla's caldera
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  Leirhnjúkur in the middle ground, behind are the maar Víti and the mountain Krafla, namegiver of the caldera and the fissure system (volcanic system).

Hiking up Leirhnjúkur: An active volcano with a high temperature area

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At the summit of Leirhnjúkur

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Eruption series within a volcano-tectonic episode in northern Iceland from 1975-84: Leirhnjúkur as a main actor

Rift zones: The divergent plates often move spasmodically which causes earthquakes and volcanic eruptions

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  The tectonic component are e.g. the earthquakes
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  Building fissures like here some kilometers to the southwest
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  Through the faults and fissures, magma mounts to the surface

The Krafla Fires: 1975-1984

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  Eruptions at Krafla in 1984
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  Krafla 1984

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  Like in Kīlauea's "Episode 54" eruption fissures opened to emit lava flows

The result: Leirhnjúkur's still steaming lava fields

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