Geotechnical properties of glacigenic shelf sediments from Prydz Bay, East Antarctica

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doi: 10.2973/odp.proc.sr.119.186.1991
Author(s): Solheim, Anders; Forsberg, Carl Fredrik; Pittenger, Alan
Author Affiliation(s): Primary:
Norw. Polar Res. Inst., Oslo, Norway
Other:
Tech. Univ. Denmark, Denmark
Ocean Drill. Program, United States
CPRG, France
Tex. A&M Univ., United States
Mus. Hist. Nat., France
Stanford Univ., United States
Bedford Inst. Oceanogr., Canada
Hawaii Inst. Geophys., United States
Alfred Wegener Inst. Polar and Mar. Res., Federal Republic of Germany
Cambridge Univ., United Kingdom
Ohio State Univ., United States
Univ. Sydney, Australia
Ruhr Univ. Bochum, Federal Republic of Germany
Lamont-Doherty Geol. Obs., United States
Toyama Univ., Japan
Dalhousie Univ., Canada
Norw. Polar Res. Inst., Norway
Univ. Tex. at Port Aransas, United States
Eidg. Tech. Hochsch., Federal Republic of Germany
Plymouth Polytech., United Kingdom
Univ. Newcastle upon Tyne, United Kingdom
Fla. State Univ., United States
Norw. Geotech. Inst., Norway
Volume Title: Proceedings of the Ocean Drilling Program, Kerguelen Plateau-Prydz Basin; covering Leg 119 of the cruises of the drilling vessel JOIDES Resolution, Port Louis, Mauritius to Fremantle, Australia, sites 736-746, 14 December 1987-20 February 1988
Volume Author(s): Barron, John A.; Larsen, Birger; Baldauf, Jack G.; Alibert, Chantal; Berkowitz, Stephen; Caulet, Jean-Pierre; Chambers, Stephen R.; Cooper, Alan K.; Cranston, Ray E.; Dorn, Wolfgang U.; Ehrmann, Werner U.; Fox, Richard D.; Fryxell, Greta A.; Hambrey, Michael J.; Huber, Brian T.; Jenkins, Christopher J.; Kang, Sung-Ho; Keating, Barbara H.; Mehl, Klaus W.; Noh, Il; Ollier, Gilles; Pittenger, Alan; Sakai, Hideo; Schroder, Claudia J.; Solheim, Anders; Stockwell, Dean A.; Thierstein, Hans R.; Tocher, Bruce; Turner, Brian R.; Wei, Wuchang; Mazzullo, Elsa Kapitan; Stewart, Norman J.
Source: Proceedings of the Ocean Drilling Program, Kerguelen Plateau-Prydz Basin; covering Leg 119 of the cruises of the drilling vessel JOIDES Resolution, Port Louis, Mauritius to Fremantle, Australia, sites 736-746, 14 December 1987-20 February 1988, John A. Barron, Birger Larsen, Jack G. Baldauf, Chantal Alibert, Stephen Berkowitz, Jean-Pierre Caulet, Stephen R. Chambers, Alan K. Cooper, Ray E. Cranston, Wolfgang U. Dorn, Werner U. Ehrmann, Richard D. Fox, Greta A. Fryxell, Michael J. Hambrey, Brian T. Huber, Christopher J. Jenkins, Sung-Ho Kang, Barbara H. Keating, Klaus W. Mehl, Il Noh, Gilles Ollier, Alan Pittenger, Hideo Sakai, Claudia J. Schroder, Anders Solheim, Dean A. Stockwell, Hans R. Thierstein, Bruce Tocher, Brian R. Turner, Wuchang Wei, Elsa Kapitan Mazzullo and Norman J. Stewart. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.119, p.143-167. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 44 refs.; illus. incl. 2 tables, sketch map
Summary: This paper presents a geotechnical characterization of the glacigenic sediments in Prydz Bay based on shipboard physical properties data obtained during Leg 119, combined with results of land-based analyses of 24 whole-round core samples. Main emphasis is placed on the land-based studies, which included oedometer consolidation tests, triaxial and simple shear tests for undrained shear strength, permeability tests in oedometer and triaxial cell, Atterberg limits, and grain-size analyses. The bulk of the tested sediments comprise overconsolidated diamictites of a relatively uniform lithology. The overconsolidation results from a combination of glacial loading and sediment overburden subsequently removed by extensive glacial erosion of the shelf. This leads to downhole profiles of physical properties that have been observed not to change as a function of the thickness of present overburden. A number of fluctuations in the parameters show a relatively systematic trend which most likely results from changes in the proximity to the ice sheet grounding line in response to variations in the glacial regime. Very low permeabilities mainly result from high preconsolidation stresses (Pc'). Pc' values up to 10,000 kPa were estimated from the oedometer tests, and empirical estimates based on undrained shear strengths (up to 2500 kPa) indicate that the oedometer results are conservative. The diamictites generally classify as inactive, of low to medium plasticity, and they consolidate with little deformation, even when subjected to high stresses. (Auth.)
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; 30 Engineering Geology; Antarctic Ocean; Antarctica; Atterberg limits; Clastic rocks; Diamictite; Engineering geology; Erosion; Glacial erosion; Glacial features; Glacial geology; Glacial sedimentation; Leg 119; Marine geology; Materials, properties; ODP Site 739; ODP Site 740; ODP Site 741; ODP Site 742; ODP Site 743; Ocean Drilling Program; Oceanography; Permeability; Prydz Bay; Sedimentary rocks; Sedimentation; Soil mechanics; Southern Ocean
Coordinates: S671635 S671634 E0750455 E0750454
S684114 S684113 E0764315 E0764314
S682310 S682309 E0762302 E0762301
S673259 S673258 E0752417 E0752416
S665500 S665459 E0744126 E0744125
Record ID: 1991059018
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States