Accession Number : AD0696412

Title :   DRILLING THROUGH THE GREENLAND ICE SHEET.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Ueda,Herbert T. ; Garfield,Donald E.

Report Date : NOV 1968

Pagination or Media Count : 15

Abstract : In July 1966 a USA CRREL drilling team succeeded in penetrating the Greenland ice sheet at Camp Century, drilling through 4550 feet of ice and 12 feet of sub-ice material. The objectives of the project were to gain an understanding of the basic flow mechanism of large ice masses and to collect continuous, undisturbed cores for scientific analyses. The two techniques of core drilling used to complete the hole were thermal drilling and electrodrilling. This preliminary report describes the drilling equipment and techniques used at Camp Century from 1963 to the completion of the deep drill hole in 1966. (Author)

Descriptors :   (*ICE, GREENLAND), DRILLING, SHEETS, THERMAL PROPERTIES, DRILLS, PENETRATION, GEOLOGIC AGE DETERMINATION, SAMPLING, ROTATION, MOTION, ELECTRIC MOTORS, TEMPERATURE, DEFORMATION, POLAR REGIONS

Subject Categories : Geology, Geochemistry and Mineralogy
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE