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Jan Mayen   »  Summary

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Jan Mayen

Jan Mayen Photo

Country:Norway
Subregion Name:Jan Mayen Island
Volcano Number:1706-01=
Volcano Type: Stratovolcano
Volcano Status:Historical
Last Known Eruption: 1985 
Summit Elevation: 2277 m 7,470 feet
Latitude: 71.08°N 71°5'0"N
Longitude: 8.17°W 8°10'0"W

Remote Jan Mayen Island, located in the Norwegian Sea along the Mid-Atlantic Ridge about 650 km NE of Iceland, consists of two volcanic complexes separated by a narrow isthmus. The large Beerenberg basaltic stratovolcano (Nord-Jan) forms the NE end of the 40-km-long island, which is ringed by high cliffs. Beerenberg is a large 2277-m-high glacier-covered stratovolcano with a 1-km-wide summit crater and numerous cinder cones that were erupted along flank fissures. It is composed primarily of basaltic lava flows with minor amounts of tephra. Historical eruptions at Beerenberg date back to the 18th century. The Sor-Jan group of pyroclastic cones and lava domes occupies the SW tip of Jan Mayen. The Holocene Sor-Jan cinder cones, tephra rings, and trachytic lava domes were erupted from short fissures with a NE-SW trend.

Global Volcanism ProgramDepartment of Mineral SciencesNational Museum of Natural HistorySmithsonian Institution

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