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Crustal morphology and plate tectonics in south central Alaska

GEOPHYSICAL INSTITUTE UNIVERSITY OF ALASKA, FAIRBANKS, ALASKA 99701

Abstract

The geometry of the crust-mantle interface has been determined for south central Alaska using earthquake records from two permanent telemetry networks and temporary stations. A mountain root is found under the Alaska Range. Moho depths and a steeply dipping focal plane suggest that the Aleutian Arc subduction zone continues through Cook Inlet and the Susitna lowlands to the Alaska Range and terminates in a continental setting.

Footnotes

^* Present address: Hawaii Institute of Geophysics, University of Hawaii.

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