PROPERTIES OF CELTIC SEA CHALK.

Discussion of geotechnical investigation was undertaken at the Kinsale Head Gas field in the Celtic Sea. Five-inch-diameter cores were recovered to a terminal penetration of 400 ft below the seafloor from two foundation borings drilled in a water depth of about 300 ft. Chalk extended continuously below 10-ft-thick surficial depoosits of sand and gravel. Laboratory tests were conducted on the chalk samples to determine chemical and physical properties, and laboratory model techniques were developed to evaluate adhesion along a chalk-grout interface.