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Great Alaska Earthquake, March 27, 1964
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Picture of 1964 Alaska Earthquake

Alaska Earthquake March 27, 1964. Uplifted sea floor at Cape Cleare on Montague Island in Prince William Sound in the area of the greatest recorded tectonic uplift on land (33 feet). The very gently slopping flat rocky surface with the white coating which lies between the cliffs and the water is about a quarter of a mile wide. The white coating consists of the remains of calcareous marine organisms that were killed by desiccation when the wave-cut surface was lifted above high tide during the earthquake.

Picture of 1964 Alaska Earthquake

Alaska Earthquake March 27, 1964. Uplifted wave-cut surface at Cape Cleare on Montague Island, showing white coating of desiccated calcareous marine organisms and brown desiccated stipes of "stalks" of kelp. The "stalks" are about 2 feet long.

Picture of 1964 Alaska Earthquake

Alaska Earthquake March 27, 1964. Hinchinbrook Coast Guard dock, raised above all but the highest tides by regional uplift in Prince William Sound. Land in this area rose about 8 feet during the earthquake.

Picture of 1964 Alaska Earthquake

Alaska Earthquake March 27, 1964. The stumps in the foreground are part of an ancient forest on Latouche Island in Prince William Sound that was submerged below sea level and buried in prehistoric times. Tectonic uplift of 9 feet during the earthquake raised these stumps above sea level once again, demonstrating that the area is tectonically restless.

Picture of 1964 Alaska Earthquake

Muskeg-covered pre-earthquake marine terrace on Middleton Island at an altitude of 110-125 feet. It is one of five uplifted terraces on the island, and a surf-cut rock platform exposed between the base of the sea cliff and the new high tide level is a sixth terrace formed by uplift of about 11 feet in 1964. The white specks are seagulls. Photo was taken near 7-foot tide stage. April 4, 1964.

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Credits: All earthquake photographs courtesy of the U.S. Geological Survey. YupRocks makes no copyright claims on these photographs; they are public domain and may be freely distributed.
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