Paleogene and early Neogene oceanography of the southern Indian Ocean; Leg 119 foraminifer stable isotope results

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doi: 10.2973/
Author(s): Barrera, Enriqueta; Huber, Brian T.
Author Affiliation(s): Primary:
Univ. Mich., Dep. Geol. Sci., Ann Arbor, MI, United States
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
Smithson. Inst., 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.693-717. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 69 refs.; illus. incl. 7 tables, sketch map
Summary: Oxygen and carbon isotopic records of monogeneric and monospecific benthic and planktonic foraminifer samples from Sites 744 and 738 drilled on the southern end of the Kerguelen Plateau during ODP Leg 119 reveal the evolution of polar Indian Ocean water masses from the Early Paleocene to the Middle Miocene. Results from Site 738 are from sediments of Early Paleocene to Late Eocene age and those from Site 744 are Late Eocene to Middle Miocene. They suggest that intermediate waters here did not originate in the high latitudes during the Early Eocene. Surface and near-surface waters cooled gradually after the maximum warming at 56 Ma when surface waters were about 18 C. Intermediate waters cooled after 52 Ma. The highest temperatures of the Cenozoic occurred from 56 to 52 Ma. The records of equatorial Pacific Site 577 and Weddell Sea Site 690 resemble those of the polar Indian Ocean in this interval. The well-documented delta13C excursions toward positive values in the Late Paleocene and negative values in the Early Eocene are represented by foraminifers increases of 1.5 per mill and following decreases of about 3 per mill. (Auth. mod.)
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Antarctic Ocean; Biogeography; C-13/C-12; Carbon; Cenozoic; Foraminifera; Indian Ocean; Invertebrata; Isotopes; Leg 119; Marine geology; Microfossils; Neogene; O-18/O-16; Ocean Drilling Program; Oceanography; Oxygen; Paleo-oceanography; Paleoclimatology; Paleogene; Processes; Protista; Ratios; Stable isotopes; Stratigraphy; Tertiary
Coordinates: S684114 S492407 E0855147 E0713936
Record ID: 1991059048
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States