Analysis of sedimentary facies using bulk mineralogical characteristics of Cretaceous to Quaternary sediments from the Kerguelen Plateau; sites 737, 738, and 744

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doi: 10.2973/odp.proc.sr.119.122.1991
Author(s): Bohrmann, Gerhard; Ehrmann, Werner U.
Author Affiliation(s): Primary:
Alfred Wegener Inst. Polar and Mar. Res., Bremerhaven, Federal Republic of Germany
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
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.211-223. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 34 refs.; illus. incl. 3 tables, sketch map
Summary: Carbonate is the dominant component in the pelagic sediments on the Kerguelen Plateau. In addition, biogenic opal sedimentation plays an important role throughout most of the sequence. A major increase in opal accumulation is documented at all sites in Late Miocene time, which is in accordance with the well-known increase in silica productivity probably caused by a major cooling step. Because of their position near the Polar Frontal Zone, sediments from Site 737 show a more extensive opal deposition than at Sites 744 and 738. An earlier productivity pulse is documented at Site 744 on the southern plateau within the Early Oligocene, following the initial phase of intense East Antarctic glaciation. This cooling event resulted in higher amounts of ice-rafted terrigenous quartz and, to a lesser extent, feldspar. With the exception of the Site 744 sediments, opal deposition in Paleogene and older sediments can be reconstructed only from the diagenetic transformation products of opal-CT and probably clinoptilolite. In contrast to the southern sequence, on the northern Kerguelen Plateau higher amounts of clinoptilolite but no opal-CT were found. These major differences in the diagenetic environments may be due to extensive volcanism in the northern area. The volcanic influence at Site 737 is well recorded by the higher feldspar content and greater amounts of volcanic glass shards. (Auth. mod.)
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Antarctic Ocean; Antarctica; Carbonate sediments; Framework silicates; Indian Ocean; Kerguelen Plateau; Leg 119; Marine geology; Mineral composition; Minerals; ODP Site 737; ODP Site 738; ODP Site 744; Ocean Drilling Program; Oceanography; Opal; Sedimentary rocks; Sediments; Silica minerals; Silicates; X-ray analysis; X-ray diffraction data
Coordinates: S501340 S501340 E0730157 E0730157
S624232 S624232 E0824715 E0824715
S613448 S613448 E0803524 E0803524
Record ID: 1991059021
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States