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Ice-marginal lava flow

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The Barrier, a typical ice-marginal lava flow in the Garibaldi Volcanic Belt of southwestern British Columbia, Canada.

An ice-marginal lava flow is a lava flow that has impounded against a glacier, ice sheet, ice field or any other body of glacial ice. They commonly display steep lava cliffs from their interaction with glacial ice and can have thicknesses of 100 m (330 ft). Columnar joints with unique patterns can form by rapid cooling of the lava.[1] Ice-marginal lava flows are products of glaciovolcanism.

References

  1. ^ "Types of volcanoes". Volcanoes of Canada. Geological Survey of Canada. 2009-04-02. Retrieved 2010-04-03.
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