Middle Eocene to Holocene benthic foraminifer assemblages from the Kerguelen Plateau (southern Indian Ocean)

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doi: 10.2973/odp.proc.sr.119.152.1991
Author(s): Schröder-Adams, Claudia J.
Author Affiliation(s): Primary:
Schröder Paleo Consult., Calgary, AB, Canada
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.611-630. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 43 refs.; illus. incl. 4 plates, sketch map
Summary: Middle Eocene to Holocene benthic foraminifers were studied in sediments from Sites 736, 738, and 744 (Kerguelen Plateau). Significant faunal changes took place in the Middle Eocene/Early Oligocene, Middle Miocene, and Late Miocene. The benthic assemblages are characterized by gradual species replacements. Assemblage boundaries are defined where first appearance datums (FADs) and last appearance datums (LADs) concentrate. The Eocene fauna was dominated by Nuttallides truempyi. Buliminids became important at the end of the Eocene and in the Early Oligocene Nuttallides umbonifera became dominant. The FAD of N. umbonifera is coeval with the onset of the first paleoceanographic indications, such as ice rafted material, of antarctic glaciation. The establishment of the Antarctic Circumpolar Current in the Middle Oligocene is reflected at Site 738 by an erosional hiatus. The increase in relative abundance of N. umbonifera at Site 744 during the same interval indicates cold, carbonate-corrosive bottom water. Epistominella exigua dominates the bathyal to abyssal Upper Miocene to Holocene sediments at Sites 744 and 738, preferring the high supply of organic matter associated with increased upwelling near the Antarctic Convergence. Site 736 has a benthic fauna, highly diluted by biosiliceous sedimentation. Significant increases of benthic foraminiferal numbers may indicate changes of the Polar Front during Pliocene/Pleistocene time. (Auth.)
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Antarctic Ocean; Antarctica; Assemblages; Benthic taxa; Biostratigraphy; Cenozoic; Foraminifera; Indian Ocean; Invertebrata; Kerguelen Plateau; Leg 119; Microfossils; ODP Site 736; ODP Site 738; ODP Site 744; Ocean Drilling Program; Protista; Stratigraphy
Coordinates: S682310 S593249 E0855147 E0744125
Record ID: 1991059041
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States