Mount Erebus.

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Presentation transcript:

Mount Erebus

A lava flow spilled out of the lava lake on the right side of the image. Final flow length is approximately 20 meters.

Quick Facts Location: Antarctica, Ross Island on Ross sea Age: less than one million years old Elevation: 12,444 feet, 3,794 m Coordinates: 77.5S, 167.2E

Small ash eruption from central vent.

A quick succession of two small strombolian eruptions from main lava lake. This eruption sequence is very similar to another eruption earlier.

More Info Erebus is an active volcano with a convecting lava lake within a summit. It has been continuously active since 1972. Most eruptions are small and stombolian in character.

Lava Composition The lava within the lava lake is alkalic in composition. Specifically, it is called anorthoclase phonolite. Anorthoclase is a feldspar mineral. Phonolite refers to rocks made of the minerals alkali feldspar and nepheline. Alkalic lava is common in rift volcanoes.

Works Cited Volcano world: http://volcano.und.edu/ Mt. Erebus Volcano Observatory: www.ees.nmt.edu/Geop/mevo/mevo.html