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https://hdl.handle.net/11681/5995| Title: | Deep core drilling in ice, Byrd Station, Antarctica |
| Authors: | Arctic Institute of North America. United States. National Committee for the International Geophysical Year. Patenaude, Robert W. Marshall, Ernest Willard, 1925- Gow, A. J. (Anthony Jack) |
| Keywords: | Ice coring Ice drilling Ice coring rigs Core drilling Ice cores Borings Equipment Antarctica Byrd Station, Antarctica Core samplers Glaciers Glacier ice Glaciology EPOLAR |
| Publisher: | U.S. Army Snow, Ice, and Permafrost Research Establishment. Engineer Research and Development Center (U.S.) |
| Series/Report no.: | SIPRE report ; 60. |
| Description: | Technical Report Summary: The preliminary results of core examinations and drill-hole temperature studies from November 1957 - January 1958 are reported, and the drilling equipment and techniques are described. Drilling was accomplished with a Failing model 314 rotary skid-mounted well-drilling rig with a 38-ft mast, powered by a 43-bhp Buda gasoline engine. Two types of bits, both cutting a 3 7/8-in. core and a 5 3/4-in. hole, were used. The speed of rotation was varied from 40 -75 rpm, and the rate of penetration ranged from 2.5-10 in/min. Compressed air was used as the drilling fluid. Good quality cores were obtained down to 1013 ft with a 98% recovery. Examination of the cores revealed the presence of a detailed stratigraphic sequence down to a depth of 400 ft, consisting of alternating layers of coarse and fine -grained snow associated with ice bands 4 mm thick, which appeared singly or in closely spaced groups at regular intervals. Below this depth the ice was very homogeneous, except for thin ice bands which persisted to the bottom; The mean densities for meter increments to a depth of 150 ft, densities determined from spot samples at 5 points from 400-721.5 ft, and drill-hole temperatures down to 1000 ft are tabulated. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/5995 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| SIPRE-Technical-Report-60.pdf | 890.53 kB | Adobe PDF |  View/Open |