Dr Bradley Opdyke

AB (Columbia University)
MS (The University of Michigan)
PhD (The University of Michigan)

Office Location
Room 135 , DEMS Building 47

Mailing Address
Department of Earth and Marine Sciences
DEMS Building 047
Australian National University
ACT 0200 Australia

Telephone	+61 2 612 54205
Fax	+61 2 612 55544
Email	Bradley.Opdyke@anu.edu.au

Research Interests

•	Carbonate Geochemistry
•	Paleoceanography
•	Carbon Cycle Modelling
•	Coral Reef Sedimentology

Research Projects

•	Quaternary palaeoceanography of Indonesian through-flow area, Northern Australia We have a large number of cores from Tropical Australia which we are in the process of studying Paleoclimate proxies such as the Stable Isotopes of Carbon and Oxygen of planktonic foraminifera as well as changes in their trace metal signatures. We are making tremendous progress in determining the paleoclimate history of the region, going back half a million years from these records.
•	Modern to Late Quaternary history of carbonate sedimentation from the Southern Great Barrier Reef, evidence from both the sediments and the water column This project is underway to determine the fate of the fine fraction of carbonate produced and transported to deep water from the GBR. Both modern and Late Quaternary Paleoceanographic data are being gathered.
•	Methane Hydrates and the Cretaceous Carbon Cycle This is a continuing research project that is focused on the Aptian. It is a large international project with links to both the University of Milan and the University of Rhode Island.
•	Quantifying Holocene shallow water carbonate sedimentation An important component of the global carbon cycle is the mass flux of carbonate carbon to shallow water deposits like Coral Reefs. We have an ongoing project to quantify in time and space the Holocene "Coral Reef" deposits in the Indo-Pacific.

Recent Publications

Bostock, H.C., B.N. Opdyke, M.K. Gagan, et al., Glacial/interglacial changes in the East Australian current [Review]. Climate Dynamics, 2006. 26 (6): p. 645-659.

Rees, S.A., B.N. Opdyke, P.A. Wilson, et al., Coral reef sedimentation on Rodrigues and the Western Indian Ocean and its impact on the carbon cycle. Philosophical Transactions of the Royal Society of London Series A-Mathematical Physical & Engineering Sciences, 2005. 363 (1826): p. 101-120.

Pelejero, C., E. Calvo, M.T. McCulloch, et al., Preindustrial to modern interdecadal variability in coral reef pH. Science, 2005. 309 (5744): p. 2204-2207.

Bostock, H.C., B.N. Opdyke, M.K. Gagan, et al., Carbon isotope evidence for changes in Antarctic Intermediate Water circulation and ocean ventilation in the southwest Pacific during the last deglaciation - art. no. PA4013 [Review]. Paleoceanography, 2004. 19 (4): p. A4013.

Gagan, M.K., L.K. Ayliffe, B.N. Opdyke, et al., Coral oxygen isotope evidence for recent groundwater fluxes to the Australian Great Barrier Reef - art. no. 1982. Geophysical Research Letters, 2002. 29 (20): p. 1982.

Ryan, D.A., B.N. Opdyke, and J.S. Jell, Holocene sediments of Wistari Reef: towards a global quantification of coral reef related neritic sedimentation in the Holocene. Palaeogeography Palaeoclimatology Palaeoecology 175(1-4 Special Issue, 2001. 175 (1-4 Special Issue SI): p. 173-184.

Muller, A. and B.N. Opdyke, Glacial-interglacial changes in nutrient utilization and paleoproductivity in the Indonesian Throughflow sensitive Timor Trough, easternmost Indian Ocean. Paleoceanography, 2000. 15 (1): p. 85-94.

Zachos, J.C., B.N. Opdyke, T.M. Quinn, et al., Early cenozoic glaciation, antarctic weathering, and seawater Sr-87/Sr-86: is there a link? Chemical Geology, 1999. 161 (1-3): p. 165-180.

Kleypas, J.A., R.W. Buddemeier, D. Archer, et al., Geochemical consequences of increased atmospheric carbon dioxide on coral reefs. Science, 1999. 284 (5411): p. 118-120.

Erba, E., J.E.T. Channell, M. Claps, et al., Integrated stratigraphy of the Cismon APTICORE (Southern Alps, Italy): A "reference section" for the Barremian-Aptian interval at low latitudes [Review]. Journal of Foraminiferal Research, 1999. 29 (4): p. 371-391.

Fraser, S., M. Davis, M. Griss, et al., Software Reuse - Nemesis or Nirvana - Panel Session. Sigplan Notices (Acm Special Interest Group on Programming Languages), 1998. 33 (10): p. 417-420.

Fraser, S., K. Beck, G. Booch, et al., Beyond the Hype - Do Patterns and Frameworks Reduce Discovery Costs. Sigplan Notices (Acm Special Interest Group on Programming Languages), 1997. 32 (10): p. 342-344.

Wilson, P.A. and B.N. Opdyke, Equatorial Sea-Surface Temperatures for the Maastrichtian Revealed through Remarkable Preservation of Metastable Carbonate. Geology, 1996. 24 (6): p. 555-558.

Walker, J.C.G. and B.C. Opdyke, Influence of Variable Rates of Neritic Carbonate Deposition on Atmospheric Carbon Dioxide and Pelagic Sediments. Paleoceanography, 1995. 10 (3): p. 415-427.

Arnaudvanneau, A., G.F. Camoin, J.A. Haggerty, et al., CARBONATE BUILD-UP OF ATOLLS AND GUYOTS IN THE NORTHWESTERN PACIFIC - PRELIMINARY RESULTS FROM ODP LEG-144 [French]. Comptes Rendus de l Academie des Sciences Serie II-Mecanique Physique Chimie Sciences de la Terre et de l Univers, 1993. 317 (7): p. 947-954.

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