Deep earthquake in Hamarinn volcano

Yesterday (21-March-2014) an extremly deep earthquake took place in Hamarinn volcano (part of Bárðarbunga volcano often called Loki-Fögrufjöll). The magnitude of this earthquake was just 1,4 but its depth was around 29,7 km. The location of this earthquake was just 10,4 km North-East of Hamarinn volcano (main). So it possibly was inside Hamarinn main volcano system, but I am not sure on that detail.

The earthquake activity in Hamarinn volcano and Öræfajökull volcano. Copyright of this image belongs to Icelandic Meteorological Office.

Earthquakes that take place this depth happen due to magma movement or small dike intrusion at depth. I don’t know what is the actual case here, this might just be an earthquake at depth. The crust has the depth of 40 km at this location (study on this can be found here) due to hotspot [second link here] activity that has increased the thickness of the crust. Last eruption in Hamarinn volcano was in July 2011, it was an minor eruption that took place and lasted just for few hours and did not breach the glacier.

Post updated at 21:02 UTC.