Initial Reports of the Deep Sea Drilling Project - Volume 9

This volume covers Leg 9 of the cruises of the Drilling Vessel Glomar Challenger. Glomar Challenger left Papeete, Tahiti on the 6th of December, 1969 and arrived in Balboa, Panama on the 27th of January, 1970. The primary purpose of Leg 9 of the Glomar Challenger, the last in the Pacific during the initial phase of the drilling program, was to obtain as complete sections as possible, of the equatorial Pacific sediments and to penetrate and date basement so as to determine the rate of sea floor spreading from the east Pacific Rise. Leg 9 was the final leg of the initial phase of the drilling program and was the fifth leg of this phase in the Pacific. During this 56 day cruise, nine sites and seventeen holes were drilled in the equatorial Pacific between 146°West Longitude and 83°W.