High southern latitude magnetostratigraphy and rock magnetic properties of sediments from sites 747, 749, and 751

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doi: 10.2973/odp.proc.sr.120.128.1992
Author(s): Heider, Franz; Leitner, Beate; Inokuchi, Hiroo
Author Affiliation(s): Primary:
Univ. Toronto, Dep. Physics, Geophysics Lab., Toronto, ON, Canada
Other:
Univ. Louis Pasteur, France
Ocean Drilling Program, United States
Univ. Claude Bernard, France
Woods Hole Oceanogr. Inst., United States
Rühr Univ. Bochum, Federal Republic of Germany
Britoil, United Kingdom
Bur. Mineral Resour., Geol. and Geophys., Australia
Ohio State Univ., United States
Univ. Toronto, Canada
Univ. Nebraska, United States
Brown Univ., United States
Kobe Univ., Japan
EAWAG/ETH, Switzerland
Alfred Wegener Inst. Polar and Mar. Res., Federal Republic of Germany
Tohoku Univ., United States
Lamont-Doherty Geol. Obs., United States
Australian Antarctic Division, Australia
Massachusetts Institute of Technology, United States
Univ. Leicester, United Kingdom
Kyoto Univ., Japan
Univ. R. I., United States
Ludwig-Maximilians Univ., Federal Republic of Germany
Volume Title: Proceedings of the Ocean Drilling Program, Central Kerguelen Plateau; covering Leg 120 of the cruises of the drilling vessel JOIDES Resolution, Fremantle, Australia, to Fremantle, Australia, sites 747-751, 20 February to 30 April 1988; Part 1
Volume Author(s): Wise, Sherwood W., Jr.; Schlich, Roland; Palmer Julson, Amanda A.; Aubry, Marie-Pierre; Berggren, William A.; Bitschene, Peter Rene; Blackburn, Neal A.; Breza, James R.; Coffin, Millard F.; Harwood, David M.; Heider, Franz; Holmes, Mary Anne; Howard, William R.; Inokuchi, Hiroo; Kelts, Kerry; Lazarus, David B.; Mackensen, Andreas; Maruyama, Toshiaki; Munschy, Marc; Pratson, Elizabeth Lewis; Quilty, Patrick G.; Rack, Frank; Salters, Vincent J. M.; Sevigny, James H.; Storey, Michael; Takemura, Atsushi; Watkins, David K.; Whitechurch, Hubert; Zachos, James; Barbu, Eva M.
Source: Proceedings of the Ocean Drilling Program, Central Kerguelen Plateau; covering Leg 120 of the cruises of the drilling vessel JOIDES Resolution, Fremantle, Australia, to Fremantle, Australia, sites 747-751, 20 February to 30 April 1988; Part 1, Sherwood W. Wise, Jr., Roland Schlich, Amanda A. Palmer Julson, Marie-Pierre Aubry, William A. Berggren, Peter Rene Bitschene, Neal A. Blackburn, James R. Breza, Millard F. Coffin, David M. Harwood, Franz Heider, Mary Anne Holmes, William R. Howard, Hiroo Inokuchi, Kerry Kelts, David B. Lazarus, Andreas Mackensen, Toshiaki Maruyama, Marc Munschy, Elizabeth Lewis Pratson, Patrick G. Quilty, Frank Rack, Vincent J. M. Salters, James H. Sevigny, Michael Storey, Atsushi Takemura, David K. Watkins, Hubert Whitechurch, James Zachos and Eva M. Barbu. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.120, p.225-245. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 20 refs.; illus. incl. 1 table, sketch map
Summary: The magnetostratigraphy of Sites 747, 749, and 751 of Leg 120 that was established by shipboard measurements was extended and confirmed. Five hundred and eighty sediment cubes were stepwise demagnetized with alternating fields to determine their characteristic remanence. A rather complete magnetostratigraphy from the Oligocene to the Pliocene was obtained for the nannofossil oozes of Site 747. Alternating-field demagnetization experiments on laboratory-induced magnetization, hysteresis measurements, and low-temperature experiments showed that the magnetic carriers are single-domain and small pseudo-single-domain (titano) magnetite particles. A fraction of these Fe-Ti oxides seems to reside as microlites in the vitric volcanic ash particles that were enriched in the magnetic separates. The natural remanent magnetizations seem to be of detrital origin with small Fe-Ti oxide grains in the volcanic glass particles as carriers of the stable paleomagnetic signal. (Auth.)
Year of Publication: 1992
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Cenozoic; Indian Ocean; Kerguelen Plateau; Leg 120; Magnetic properties; Magnetostratigraphy; Minerals; Neogene; ODP Site 747; ODP Site 749; ODP Site 751; Ocean Drilling Program; Oxides; Paleomagnetism; Patterns; Properties; Sediments; Stratigraphy; Tertiary; Titanomagnetite
Coordinates: S582627 S582627 E0785853 E0785853
S584302 S584302 E0762420 E0762420
S574334 S574334 E0794853 E0794853
Record ID: 1992037351
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