Mount Erebus

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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. - PowerPoint PPT Presentation

Text of 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.

  • Location: Antarctica, Ross Island on Ross seaAge: less than one million years oldElevation: 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.

  • 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.

  • 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.

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

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