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LABORATOIRE G-TIME

GEOCHIMIE: TRAÇAGE ISOTOPIQUE, MINERAL, ET ÉLEMENTAIRE

GEOCHEMISTRY: ISOTOPIC, MINERAL AND ELEMENT TRACING



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ASHLEA WAINWRIGHT, Postdoctoral scholar

Phone: +32 2 650 22 52

Email: awainwri@ulb.ac.be

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Research interests

My primary research interest lies in investigating the composition of Earth and the evolution of the mantle through-out geological time. Within this general premise, my research focuses on both terrestrial and extra-terrestrial samples. From looking at the initial building blocks of Earth, through ancient melting events on Earth, to modern day melt genesis. This is achieved through a number of different isotopic systems, including both long-lived and short-lived radionuclides, for which the development of high precision trace element and isotopic measurements is a fundamental aspect.



Scientific career and education

- November 2015-Present: Postdoctoral Researcher, Lboratoire G-Time, Université Libre de Bruxelles, Belgium. Project: investigating the initial composition of the solar system through short-lived radioactive chronometers.

- March 2015-October 2015: Postdoctoral Researcher, Endogene Prozesse, Steinmann Institute, University of Bonn, Germany. Project: Investigating the heterogeneous Kaapvaal mantle through in-situ trace element analysis of mantle xenoliths.

- October 2011-March 2015: Ph.D. Student, Endogene Prozesse, Steinmann Institute, University of Bonn, Germany. Thesis Title: Dating Early Archean partial meting events: insights from in-situ Re-Os dating of micrometric Os-minerals from Kalahari mantle xenoliths.

- October 2008-September 2011: Research Assistant, Isotope Geology Group, School of Earth Sciences, University of Melbourne, Australia.

- 2004-2008: Bachelor of Science (Honours), University of Melbourne, Australia. Honour's Thesis: Constraining the Evolution and Mantle Origin of the Neerim Sub-Province, Pre-10 Ma Volcanics, Victoria.



Publications

- Fonseca R.O.C., Brückel K., Bragagni A., Leitzke F.P., Speelmanns I.M. and Wainwright A.N. (2017) Fractionation of Rhenium from Osium during noble metal alloy formation in association with sulfides: Implications for the interpretation of model ages in alloy-bearing magmatic rocks, Geochimica et Cosmochimica Acta 216, pp. 184-200, doi: 10.1016/j.gca.2017.04.041

- Creech J.B., Baker J.A., Handler M.R., Lorand J.-P., Storey M., Wainwright A.N., Luguet A., Moynier F. and Bizzarro M. (2017) Late accretion history of the terrestrial planets inferred from platinum stable isotopes, Geochemical Perspective Letters 3, pp. 94-104, doi: 10.7185/94 geochemlet.1710w

- Wainwright, A.N., A. Luguet, A. Schreiber, R.O.C. Fonseca, G.M. Nowell, J.-P. Lorand, R. Wirth and P.E. Janney (2016) Nanoscale variations in 187 Os isotopic compositions and HSE systematics in a Bultfontein peridotite, Earth and Planetary Science Letters 447, 60-71.

- Wainwright, A.N., Luguet, A., Fonseca, R.O.C. and Pearson, D.G. (2015). Investigating metasomatic effects on Re-Os: A case study on micrometric sulfides in peridotite from the Letlhakane Kimberlite (Botswana), Lithos 232, pp. 35-48, doi: 10.1016/j.lithos.2015.06.017

- Froitzheim, N., Jahn-Awe, S., Wainwright, A.N., Maas, R., Georgiev, N., Nagel, T.J. and Pleuger, J. (2014). Age and composition of ophiolite from the Rhodope Middle Allochthon (Satovcha, Bulgaria): a test for the maximum-allochthony hypothesis of the Hellenides, Tectonics 33, pp. 1477-1500, doi: 10.1002/2014TC003526



Conference Sessions Convened

- Magmas and their Cargoes as Tracers of Mantle Evolution: Implications for Chemical Geodynamics, Goldschmidt Conference, 2018, Boston, USA

- Mantle Sources, Metasomatism, Magmatic Processes and Xenolith Cargoes, Goldschmidt Conference, 2017, Paris, France

Conference abstracts as first author

- Wainwright A.N., Debaille V., Pourkhorsandi H., Zincone S.A., Mole D.L., Barnes S.J., Maas R. and Guice G.L., 2018. Tracing Early Earth Differentiation with 142Nd, Goldschmidt Conference, Boston, USA

- Wainwright A.N. and Debaille V., 2018. Archean Isotope Anomalies as a Window into Differentiation History. Abstract for oral presentation, Differentiation Workshop, Pasadena, USA

- Wainwright A.N., Debaille V. and Berger J., 2017. Complex Archean mantle dynamics revealed by 142Nd isotopes. Abstract for oral presentation, Goldschmidt Conference, Paris, France

- Wainwright A.N., Debaille V. and Berger J., 2016. Constraints from the West African Craton on Archean mantle dynamics, Abstract for poster presentation, Goldschmidt Conference, Yokohama, Japan

- Wainwright A.N., Luguet A., Schreiber A., Fonseca R.O.C., Nowell G.M, Lorand J.-P., Wirth R., and Janney P.E., 2016. 187Os isotopic composition and HSE variations at the nanoscale, Abstract for oral presentation, 4th International HSE Geochemistry Workshop, Durham, United Kingdom

- Wainwright A.N., Schreiber A., Luguet A., Fonseca R.O.C., Wirth R., Lorand J.-P., Nowell G.M. and Janney P.E., 2015. From Marco to Micro: Re-Os and HSE systematics at variable scales, Abstract for oral presentation, Goldschmidt Conference, Prague, Czech Republic

- Wainwright A.N., Luguet A., Fonseca R.O.C. and Pearson D.G. 2014. Unravelling metasomatic effects on Re-Os Ages: A case study from Letlhakane (Botswana), Abstract for oral presentation, Orogenic Lherzolite Conference, Marrakesh, Morocco

- Wainwright A.N., Luguet A., Fonseca R.O.C., and Pearson, D.G. 2013. Sulfide Re-Os dating in modally metasomatised peridotites, insights from Letlhakane (Botswana), Abstract for oral presentation, Goldschmidt Conference, Florence, Italy

- Wainwright A.N., Luguet A. and Pearson D.G., 2012. New insights on cratonic mantle history from single grain Re-Os on sulfide minerals: A case study from Letlhakane (Botswana) mantle xenoliths, Abstract for poster presentation, European Mineralogical Conference, Frankfurt, Germany








Laboratoire G-Time Université Libre de Bruxelles Département Géosciences, Environnement et Société CP 160/02, 50 Avenue F.D. Roosevelt, B-1050 Brussels, Belgium