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Ring of Fire

The columnar basalt of Ogchul Island shows its volcanic origins. Eric Panner/USFWS. Click to enlarge

Island-building Forces Continue to Shape Alaska’s Aleutian Islands

The entire chain of Aleutian Islands in the Alaska Maritime Refuge rides the northern arc of the "Ring of Fire" – a line of inner friction where Pacific plate of the earth’s crust grinds slowly under the continental plates surrounding it.

This movement breeds quakes, tidal waves and the volcanic eruptions that formed the islands themselves.

Learn more about volcanic islands in the Alaska Maritime Refuge

Dynamic Bogoslof (watching an island grow since 1796 to present)

Alaska Volcano Atlas (Alaska Volcano Observatory - photos, descriptions, history of Alaska’s volcanoes along the Ring of Fire)

Volcanoes of the Aleutian Arc (Map and Table listing height, morphology, eruptions of 79 volcanoes - scroll down to last paragraph, click "table" and GIF or PDF for map)

Recent Eruptions - Mount Cleveland (February and March 2001)

What happens to nesting birds or marine mammals after earthquakes or volcanic eruptions?

Bogoslof (recorded changes since 1800s)