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The East Coast Onshore-Offshore Experiment, II. Seismic refraction measurements on the continental shelf between Cape Hatteras and Cape Fear

SOUTHWEST CENTER FOR ADVANCED STUDIES, DALLAS, TEXAS

Abstract

During the East Coast OnShore-OffShore Experiment (ECOOE) two lines of instrumented buoys were anchored on the continental shelf between Cape Hatteras and Cape Fear. One line extended from near shore to the 100 fathom depth contour. The other line was parallel to and near the 100 fathom depth contour. Shots varying in size from 20 lbs. to 10 tons were fired along both lines. From the refraction data obtained and well-control available, crystalline basement is correlated with a layer of velocity 5.96 km/sec, the top of the Lower Cretaceous with a layer of velocity 3.54 km/sec and the top of the Upper Cretaceous with a layer of 2.44 km/sec. A contour map of the depth to crystalline basement under the shelf and structure sections are presented. The statistical uncertainties in the depths and velocities were determined.

Footnotes

^* Now at the Seismological Observatory, Texas Technological College, Lubbock, Texas

This article has been cited by other articles:

				A. L. HALES, C. E. HELSLEY, J. J. DOWLING, and J. B. NATION The East Coast Onshore-Offshore Experiment, I. The first arrival phases Bulletin of the Seismological Society of America, June 1, 1968; 58(3): 757 - 819. [Abstract] [PDF]