Jólnir

This article is about the former island. For the Norse god, see Odin.

Jólnir
Elevation	Below sea level
Location
Location	Iceland
Geology
Type	Vent of Surtsey
Last eruption	1966

Jólnir was formerly a volcanic island south of Iceland. It was a vent of Surtsey, along with Syrtlingur and Surtla. It emerged from the ocean as a result of tectonic activity in July, 1966. Oceanic erosion cyclically wore down the new land as it formed, and the island sank below the surface several times.

It was named for Jólnir, a Norse god (usually identified as a second name for Odin).

Jolnir's formation is closely linked to that of neighboring volcanic island, Surtsey, which emerged in 1963. Volcanic eruptions occurred in much of the surrounding water, but newly formed land was subject to oceanic erosion and many small islands washed away. By 1966, Jólnir had broken the surface, and changing composition of the emerging material resulted in hardier rock forms resistant to erosion. The volcanic cone reached 70 meters above sea level, but even this landmass eventually gave way to the eroding ocean waves.

After activity ceased on 8 August 1966, it was rapidly eroded, and disappeared below the sea during October 1966.

See also

• List of volcanoes in Iceland

External links

• Photograph and brief description from United States Armed Forces newspaper Stars and Stripes.
• Another photograph of Jolnir in 1966
• University of North Dakota page about Surtsey and Jolnir
• Brief description from Dartmouth, at the bottom.