The Kerguelen Plateau; new paleontologic and paleomagnetic age constraints on growth history from ODP Leg 183 drilling

Author(s): Wise, S. W.; Coxall, H. K.; Wähnert, V.; Antretter, M. J.; Inokuchi, H.; Coffin, M. F.; Frey, F. A.; Wallace, P. J.; McArthur, J. M.; Weis, D.; Zhao, X.; Teagle, D. A. H.; Saccocia, P. J.; Reusch, D. N.; Pringle, M. S.; Nicolaysen, K. E.; Neal, C. R.; Müller, R. D.; Moore, C. L.; Mahoney, J. J. L.; Keszthelyi, L.; Duncan, R. A.; Delius, H.; Damuth, J. E.; Damasceno, D.; Boore, M. K.; Boehm, F.; Barling, J.; Arndt, N. T.
Ocean Drilling Program, Leg 183, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
Florida State University, Department of Geology, Tallahassee, FL, United States
University of Bristol, United Kingdom
Museum für Naturkunde, Federal Republic of Germany
Ludwig-Maximilians-Universität München, Federal Republic of Germany
Himeji Institute of Technology, Japan
University of Texas at Austin, Australia
Massachusetts Institute of Technology, United States
Ocean Drilling Program, United States
University College London, United Kingdom
Volume Title: Antarctica at the close of a millennium; proceedings of the 8th international symposium on Antarctic earth sciences
Volume Author(s): Gamble, John A., editor; Skinner, David N. B.; Henrys, Stuart A.
Source: Bulletin - Royal Society of New Zealand, Vol.35, p.239-247; 8th international symposium on Antarctic earth sciences, Wellington, New Zealand, July 5-9, 1999, edited by John A. Gamble, David N. B. Skinner and Stuart A. Henrys. Publisher: The Royal Society of New Zealand, Wellington, New Zealand. ISSN: 0370-6559. ISBN: 1877264067 CODEN: RNZBAY
Note: In English. 52 refs.; illus., incl. strat. col., sketch map
Summary: Although the submergent Kerguelen Plateau (KP), a large igneous province in the Southern Indian Ocean, was initiated after the rifting of India from Antarctica, its construction, fed by the Kerguelen hot spot, has taken place over the past c. 114 m.y. Preliminary shipboard paleontologic and paleomagnetic dates from ODP Leg 183 on marine sediments above igneous basement help constraint the growth history of this feature. The oldest such date is late Albian (105-106 Ma or younger) from Site 1136 on the southern KP, whereas the youngest is early Oligocene (more precisely, 34 Ma) from Sites 1139 and 1140 on the northern KP. Elan Bank provided intermediate ages of late Campanian (c. 75 Ma); however, Site 1138 on the central KP yielded lower Turonian (c. 93.5 Ma) marine sediments (Cenomanian/Turonian boundary "black shales") above upper Albian-lowest Cenomanian (c. 102-96 Ma) non-marine (fluvial) claystones, sandstones, and conglomerates. This latter date (from shore-based palynology) diminishes considerably the previously inferred age difference between the southern and central KP and, in so doing, tends to blur the geophysical distinction between these two domains.
Year of Publication: 2002
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Cenozoic; Cores; Elan Bank; Foraminifera; Hot spots; Invertebrata; Kerguelen Plateau; Large igneous provinces; Leg 183; Marine sediments; Microfossils; Nannofossils; ODP Site 1136; ODP Site 1138; ODP Site 1139; ODP Site 1140; Ocean Drilling Program; Paleomagnetism; Palynomorphs; Phanerozoic; Planktonic taxa; Plantae; Plate tectonics; Protista; Sediments; Southern Ocean
Coordinates: S593906 S593906 E0845006 E0845006
S461536 S461536 E0682930 E0682930
Record ID: 2004033446
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