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Two seismic refraction measurements: North Pacific Ocean Basin and Dixon Entrance

PACIFIC NAVAL LABORATORY DEFENCE RESEARCH BOARD, VICTORIA, B.C. Canada

Abstract

The data from two reversed seismic refraction profiles in the Northeast Pacific are presented as two separate structure sections. One profile was located at the southern limit of the Alaskan Abyssal Plain near 48°N and 136°W. At this location the crustal thickness was abnormally thin, 5.0 kilometers. A second profile was located on the Continental Shelf at the west end of Dixon Entrance, northwest of the Queen Charlotte Islands. This profile indicated the absence of oceanic layering and the presence of a layer with a velocity of 6.16 km/sec, typical of continental granites.

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				W. R. H. WHITE and J. C. SAVAGE A seismic refraction and gravity study of the earth's crust in British Columbia Bulletin of the Seismological Society of America, April 1, 1965; 55(2): 463 - 486. [Abstract] [PDF]