Abstract

INTRODUCTION

In 1935, C. S. Piggot,1 while testing his core-sampling instrument along the continental shelf off the Middle Atlantic States, made a trial beyond the 1000-fathom line in the edge of the deep ocean basin. The first effort was successful in two respects. First, the capability of the machine to operate in deep water was demonstrated. Second, the core-sample proved, as anticipated, to be very interesting, because few if any core samples of present-day deep-sea bottom deeper than 2 to 3 feet had previously been obtained and consequently the understanding of submarine stratigraphy in existing oceans has been largely a matter of conjecture and inference.

The information supplied by the diatoms, foraminifers, and sediments in the core is so intimately related to studies now actively being pursued on the geomorphology of continental shelves that the writers believe it worth while to make the information more generally available without waiting to . . .

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