The 1964 event is caused by subduction along the Alaska-Aleutian subduction zone.

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Multiple Choice

The 1964 event is caused by subduction along the Alaska-Aleutian subduction zone.

Explanation:
Subduction along a plate boundary can drive mega-thrust earthquakes, where the enormous slip on the boundary releases vast energy. The 1964 Great Alaska Earthquake happened exactly there, on the Alaska–Aleutian subduction zone, where the Pacific Plate is thrust beneath the North American Plate. The rupture along this boundary released huge energy, caused intense ground shaking across southern Alaska, and generated powerful tsunamis affecting distant shores. Because the event originated from that subduction interface, the statement is true.

Subduction along a plate boundary can drive mega-thrust earthquakes, where the enormous slip on the boundary releases vast energy. The 1964 Great Alaska Earthquake happened exactly there, on the Alaska–Aleutian subduction zone, where the Pacific Plate is thrust beneath the North American Plate. The rupture along this boundary released huge energy, caused intense ground shaking across southern Alaska, and generated powerful tsunamis affecting distant shores. Because the event originated from that subduction interface, the statement is true.

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