Directory

Robert A Creaser

Publications

• B Kendall, RA Creaser and D Selby. “¹⁸⁷Re-¹⁸⁷Os geochronology of Precambrian organic-rich sedimentary rocks”. Geological Society of London Special Publication (2009), 326, 85-107.
• T Bristow, MJ Kennedy, A Derkowski, M Droser G Jiang and RA Creaser. “Mineralogical constraints on the paleoenvironments of the Ediacaran Doushantuo Formation”. Proceedings National Academy Sciences (2009), 106 (32), 13190-13195.
• SC Turgeon and RA Creaser “Cretaceous Oceanic Anoxic Event 2 triggered by massive magmatic event”. Nature (2008) 454, 323-326.
• AD Anbar, Y Duan, TW Lyons, GL Arnold, B Kendall, RA Creaser, AJ Kaufman, GW Gordon, C Scott, J Garvin and R Buick. “A Whiff of Oxygen Before the Great Oxidation Event”. Science. (2007), 317, 1903-1906.
• R Markey, HJ Stein, JL Hannah, D Selby and RA Creaser. “Standardizing Re-Os geochronology: A new molybdenite Reference Material (Henderson, USA) and the stoichiometry of Os salts”. Chemical Geology (2007), 244, 74-87.
• RM Morelli, RA Creaser, R Seltmann, FM Stuart, D Selby and T Graupner. “Age and source constraints for the giant Muruntau gold deposit, Uzbekistan, from coupled Re-Os-He isotopes in arsenopyrite. Geology (2007), 35, 795-798.
• D Selby, RA Creaser, and MG Fowler. “Re-Os elemental and isotopic systematics in crude oils”. Geochimica et Cosmochimica Acta (2007), 71, 378-386.
• BS Kendall, RA Creaser, and D Selby. “Re-Os geochronology of post-glacial black shales in Australia: Constraints on the timing of “Sturtian” glaciation”. Geology (2006), 34, 729-732.
• D Selby and RA Creaser. “Direct radiometric dating of hydrocarbon deposits using rhenium-osmium isotopes”. Science (2005), 308, 1293-1295.
• D Selby and RA Creaser. “Direct radiometric dating of the Devonian-Carboniferous timescale boundary using the Re-Os black shale geochronometer. Geology (2005), 33, 545-548.

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Research area

• Radiogenic isotope geochemistry, Re-Os isotopes and geochronology, crustal evolution
• Geochronology of organic-rich sediments and oils using the Re-Os  isotope system
• Re-Os geochronology of fluid flow and  ore-forming systems

Research interest

Dr. Robert A. Creaser specializes in radiogenic isotope geochemistry using the Re-Os, Rb-Sr, Sm-Nd, Pb-Pb isotope systems. A wide variety of geochemical phenomena and processes, mainly involving the geochemistry, origin and evolution of Earth's crust, are investigated using these isotope systems. Currently, research projects focus on the use of Re-Os isotopes for process tracing and geochronology, such as: Re-Os geochronology and systematics of organic-rich sediments, application of Re-Os isotopes for direct dating sulfide mineralization, investigation of the Re-Os systematics of oils, and Re-Os geochronology of fluid flow in sedimentary basins.

Research opportunity

• Geochronology of fluid flow in sedimentary basins using Re-Os isotopes.
• Re-Os geochronology of ore-forming systems using sulfide minerals.
• Re-Os systematics of oils, oil generation and migration.

School

La Trobe University