Lithologic interpretation from geophysical logs in holes 737B, 738C, 739C, and 742A

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doi: 10.2973/odp.proc.sr.119.183.1991
Author(s): Ollier, Gilles; Mathis, Benoit
Author Affiliation(s): Primary:
IFREMER, Plouzane, France
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
Univ. Nancy I, France
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.263-289. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 33 refs.; illus. incl. 1 table, sketch map
Summary: In the Kerguelen Plateau holes the radioactivity and uranium, thorium, and potassium logs were used to determine the amount and the nature of clays. Holes 737B and 738C are located on the northern and southern Kerguelen Plateau, respectively, whereas Holes 739C and 742A are located on the antarctic shelf in the Prydz Bay area. Six logging units are recognized in Hole 737B in the depth interval 296.5-701.0 m below seafloor (mbsf) and 3 in Hole 738C in the depth interval 113.0-455.0 mbsf on the basis of the shaliness and the porosity of the calcareous formations. Almost no clay was found from the logs in Hole 738C, whereas a significant amount of illite and montmorillonite, up to 38.5% of the dry bulk, was found in Hole 737B. The deposits in the holes of the antarctic shelf show a very high radioactivity rate (up to 120 GAPI in Hole 742A) due to the presence of granitic eroded basement rocks. Two kinds of glacial sediments were identified from the log records in Hole 742A and 739C. The first corresponds to compacted massive diamictite units deposited beneath grounded ice; the second kind corresponds to less compacted stratified diamictite units deposited seaward of the grounding line. The basal glacier deposits are compacted because the weight of the ice has acted upon the sediments since the time of their deposit, whereas distal diamictites are less affected by ice loading. In both Holes 739C and 742A, the alternation of basal diamictites and distal diamictites suggests several cycles of ice advance and retreat. At least two cycles seem to have occurred from the Pliocene to the present. (Auth. mod.)
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Antarctic Ocean; Antarctica; Clastic sediments; Clay; Data processing; Deposition; Glacial features; Glacial geology; Glacial sedimentation; Glaciation; Hole 737B; Hole 738C; Hole 739C; Hole 742A; Indian Ocean; Interpretation; Kerguelen Plateau; Leg 119; Lithofacies; Marine geology; ODP Site 737; ODP Site 738; ODP Site 739; ODP Site 742; Ocean Drilling Program; Oceanography; Radioactivity; Sedimentation; Sediments; Well-logging
Coordinates: S682310 S593249 E0855147 E0744125
Record ID: 1991059024
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States