Late Cretaceous (Maastrichtian)–Quaternary summary biostratigraphies are presented for Ocean Drilling Program (ODP) Leg 189 Sites 1168 (West Tasmanian Margin), 1170 and 1171 (South Tasman Rise), and 1172 (East Tasman Plateau). The age models are calibrated to magnetostratigraphy and integrate both calcareous (planktonic foraminifers and nannofossils) and siliceous (diatoms and radiolarians) microfossil groups with organic walled microfossils (organic walled dinoflagellate cysts, or dinocysts). We also incorporate benthic oxygen isotope stratigraphies into the upper Quaternary parts of the age models for further control. The purpose of this paper is to provide a summary age-depth model for all deep-penetrating sites of Leg 189 incorporating updated shipboard biostratigraphic data with new information obtained during the 3 yr since the cruise. In this respect we provide a report of work to November 2003, not a final synthesis of the biomagnetostratigraphy of Leg 189, yet we present the most complete integrated age model for these sites at this time.
Detailed information of the stratigraphy of individual fossil groups, paleomagnetism, and isotope data are presented elsewhere. Ongoing efforts aim toward further integration of age information for Leg 189 sites and will include an attempt to correlate zonation schemes for all the major microfossil groups and detailed correlation between all sites.
1Stickley, C.E., Brinkhuis, H., McGonigal, K.L., Chaproniere, G.C.H., Fuller, M., Kelly, D.C., Nürnberg, D., Pfuhl, H.A., Schellenberg, S.A., Schoenfeld, J., Suzuki, N., Touchard, Y., Wei, W., Williams, G.L., Lara, J., and Stant, S.A., 2004. Late Cretaceous–Quaternary biomagnetostratigraphy of ODP Sites 1168, 1170, 1171, and 1172, Tasmanian Gateway. In Exon, N.F., Kennett, J.P., and Malone, M.J. (Eds.), Proc. ODP, Sci. Results, 189 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/189_SR/111/111.htm>. [Cited YYYY-MM-DD]
2Lamont-Doherty Earth Observatory, Palisades NY 10964, USA. Current address: School of Earth, Ocean and Planetary Sciences, PO Box 914, Cardiff University, Cardiff, CF10 3YE, United Kingdom. cathy@earth.cf.ac.uk
3Botanical Palaeoecology, Laboratory of Palaeobotany and Palynology, Utrecht University, CD-3584 Utrecht, The Netherlands.
4Department of Geological Sciences, Florida State University, Tallahassee FL 32306, USA.
5Department of Geology, The Australian National University, Canberra ACT 0200, Australia.
6Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, Honolulu HI 96822, USA.
7Department of Geology and Geophysics, University of Wisconsin–Madison, Madison WI 53706, USA.
8GEOMAR Research Center for Marine Geosciences, D-24148 Kiel, Germany.
9Max Planck Institute for Biogeochemistry, 07745 Jena, Germany.
10Department of Geological Sciences, San Diego State University, San Diego CA 92182, USA.
11Institute of Geology and Paleontology, Tohoku University, Sendai 980-8578, Japan.
12CEREGE, Europôle Méditerranéen de l'Arbois BP80, F-13545 Aix en Provence Cedex 4, France.
13Scripps Institution of Oceanography, University of California, San Diego, La Jolla CA 92093, U.S.A.
14Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, Dartmouth NS B2Y 4A2, Canada.
Initial receipt: 28 February 2003
Acceptance: 22 March 2004
Web publication:
13 August 2004
Ms 189SR-111