The Pre-Tertiary Geology of the Western Approaches to the English Channel

Abstract

Geological information obtained by core sampling of the solid rock underlying the loose deposits on the floor of the Western Approaches is set forth. Discoveries of interest include those of Chalk in the area north-west of Cornwall and of nepheline phono-lite from Epson Shoal, 6 miles east of the Wolf Rock. Other samples obtained very probably represent the Devonian, New Red Sandstone and Chalk, and on the basis of the identifications a geological map has been prepared showing the approximate distribution of these formations in the area.