School of GeoSciences

School of GeoSciences


Romain Guilbaud

I am now a postdoc at Newcastle University in Neoproterozoic biogeochemistry. To contact me:

School of Civil Engineering and GeoSciences,
Drummond Building, Room 3.10,
Newcastle University
Newcastle upon Tyne
phone: +44 (0) 191 222 5745

PhD student, Experimental isotope Geochemistry

Institute of Earth Sciences, School of GeoSciences, University of Edinburgh
phone: +44 (0) 131 650 8517
supervision: Ian Butler (Uni. of Edinburgh) and Rob Ellam (SUERC, East Kilbride)


2002-2007: Bsc, MsGeo, University of Grenoble, France (including one year at the University of Freiburg, Germany
2007-2011: PhD, University of Edinburgh, UK

Research Interests

Clay distribution, provenance, diagenesis and burial transformations.
Understanding the stable metal isotope signatures of diagenetic and hydrothermal sulphide systems.
Experimental approach to assess geochemical mechanisms and pathways occurring during low temperature processes.
Kinetic and equilibrium Fe isotope fractionations occurring within the diagenetic Fe-S system, in particular during the formation of pyrite.
Development of experimental protocols for assessing the behavior of metal atoms between solids and aqueous phases including clusters.
Development of analytical procedures including the analysis of Fe isotope ratios, Fe sequential extractions, and the analysis of oxygen sensitive minerals.
Geochemical approach to assess the redox conditions of past oceans.


2008-10: Mineralogical Society of Great Britain and Ireland
2008-10: Student representative of the Geochemistry Group Committee (group of the Mineralogical and Geological Society of Great Britain and Ireland)


R. Guilbaud, I.B. Butler, and R.M. Ellam, 2011. Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation. Science, 332, 1548-1551.

R. Guilbaud, I.B. Butler, R.M. Ellam, D. Rickard and A. Oldroyd, 2011. Experimental determination of the equilibrium Fe isotope fractionation between Fe2+aq and FeSm (mackinawite) at 25oC and 2oC. Geochim. Cosmochim. Act., doi:10.1016/j.gca.2011.02.023.

R. Guilbaud, I.B. Butler, R.M. Ellam, and D. Rickard, 2010. Fe isotope exchange between Fe(II)aq and nanoparticulate mackinawite (FeSm) during nanoparticle growth. Earth Planet. Sci. Lett., 300, 174-183.

R. Guilbaud, R.M. Ellam, I.B. Butler, V. Gallagher and K. Keefe, 2010. A procedural development for the analysis of 56/54Fe and 57/54Fe isotope ratios with new generation IsoProbe MC-ICP-MS. J. Anal. At. Spectrom., 25, 1598-1604.

P. Huyghe, R. Guilbaud, M. Bernet, A. Galy and A Prasad Gajurel, 2010. Significance of the claymineral distribution in fluvial sediments of the Neogene to Recent Himalayan Foreland Basin (west-central Nepal). Basin Research, DOI: 10.1111/j.1365-2117.2010.00485.x.


R. Guilbaud, R.M. Ellam, I.B. Butler and D. Rickard. Experimental determination of Fe isotope fractionations in the iron-sulfide system at low temperature. Geophysical Research Abstracts, vol. 12, EGU General Assembly 2010.

R. Guilbaud, R.M. Ellam, I.B. Butler and D. Rickard. Fe isotope fractionation in the Fe-S system at low temperature. American Geophysical Union, Fall Meeting 2009.

R. Guilbaud, I.B. Butler and R.M. Ellam. Fe isotope fractionation and diagenetic pyrite formation. Geochemistry Group Research in Progress Meeting, The Geological Society, 2008.