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Ordinarie öppettider:
Tisdag-fredag 10-17
Lördag-söndag 10-18

  • Huvudmeny
Bogdana Radu

Bogdana Radu

Postdoctoral researcher

Contact

E-mail: bogdana.radu@nrm.se

Billing and mailing address:

See the Staff and Contact page

Education

  • B.Sc., Geology, University of Bucharest, Romania, 2012
  • M.Sc., Earth Sciences, Université Jean Monnet de Saint Etienne, France; University of Bucharest, Romania, 2014
  • Ph.D., Earth Sciences, University of Cape Town, South Africa & Université Jean Monnet de Saint Etienne, France, 2018

Responsibilities

Research in mineralogy

Research interests

My main interest is to understand water and crustal recycling in the early development of plate tectonics. The global water cycle has important ramifications in numerous fields of natural sciences, shaping up the world as we see it today. Even in minor amounts, water (as different hydrogen speciations) decreases the mechanical strength of minerals and lowers the melting temperature, properties that govern volcanism and the convecting mantle. At a large scale, hydrogen is released into the atmosphere by volcanic outgassing and is reintroduced into the mantle during subduction. Investigating water incorporation and preservation during subduction requires pristine mantle material and solid constraints for its crustal-derived origin. Due to its significantly higher water content (up to 6000 ppm) among mantle NAMs (nominally anhydrous minerals) and its petrogenesis, omphacite (eclogitic clinopyroxene) is an ideal candidate for water investigation.

For my research I look into eclogite xenoliths, which are the oldest remnants of recycled oceanic crust, stored in the continental roots. I use petrology, elemental and oxygen isotope geochemistry concurrently with spectroscopic methods for water analyses. The aim is to advance the knowledge regarding hydrogen (i.e. H2, OH, H2O) incorporation and stability, correlation to lattice variations, possible exchanges and further impact on D/H ratios. Of subsequent interest is answering questions regarding the preferential diffusion of specific hydrogen configurations during dehydration; and the representativeness of our insight into water storage capacity of minerals at mantle conditions.

Research projects

Awards

  • Prix Ami BOUÉ 2019 de la Société Géologique de France – prix de thèse
  • Prix d’excellence doctorat 2019 de la Fondation Université Jean Monnet

Publications

Selected Publications

  • Radu I.B., Harris, C., Moine, B.N., Costin G. and Cottin J.Y. Subduction relics in the subcontinental lithospheric mantle, evidence from δ18O variations in eclogite xenoliths from the Kaapvaal craton. (2019) Contrib Mineral Petrol, 174:19, doi: 10.1007/s00410-019-1552-z
  • Radu I.B., Moine B., Ionov D., Korsakov A., Golovin A., Mikhailenko D. and Cottin J.-Y. Kyanite-bearing eclogite xenoliths from the Udachnaya kimberlite, Siberian craton, Russia. (2017) Bull. Soc. géol. France, t. 188, n°1—2, 77—84, doi: 10.1051/bsgf/2017008