Northern Iceland shaken by moderate earthquakes and tremors

Sunday, October 21, 2012
By Paul Martin
October 21, 2012

ICELAND – A 4.8 and 5.7 earthquake struck north of Iceland near Siglufjörður, which is home to a thriving community built along the inner coastline. The quakes struck along the northern end of the divergent rift or Mid-Atlantic Ridge that runs through the center of Iceland. The quakes ignited a swarm of hundreds of tremors. A series of 3.0+ magnitude tremors have also occurred in the vicinity of the Krafla volcano, which last erupted in 1985. The Krafla central volcano, located NE of Myvatn Lake, is a topographically indistinct 10-km-wide caldera that is cut by a N-S-trending fissure system. Eruption of a rhyolitic welded tuff about 100,000 years ago was associated with formation of the caldera. Krafla has been the source of many rifting and eruptive events during the Holocene, including two in historical time, during 1724-29 and 1975-84. –The Extinction Protocol

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