Maria C. Valdes, PHD

Research Associate, Negaunee Integrative Research Center, Field Museum

Lecturer at the School of the Art Institute of Chicago

Scientific Affiliate, University of Chicago


Research Focus:

Stable isotope geochemistry and cosmochemistry, meteorites, lunar evolution


Fondation Wiener-Anspach Postdoctoral Fellow (University of Cambridge, UK)

PhD. Geochemistry and Cosmochemistry (Université Libre de Bruxelles, Belgium) 

A.M. Earth and Planetary Sciences (Washington University in St. Louis) 

B.Sc. Geophysical Sciences (University of Chicago) 


Selected Publications 

Dauphas N., Hopp T., Craig G., Zhang Z. J., Valdes M. C., Heck P. R., Charlier B. L. A., Bell E. A., Harrison T. M., Davis A. M., Dussubieux L., Williams P. R., Krawczynski M. J., Bouman C., Lloyd N. S., Tollstrup D., Schwieters J. B. In Situ 87Rb-87Sr analyses of terrestrial and extraterrestrial samples by LA-MC-ICPMS/MS with double Wien filter and collision cell technologies. Journal of Analytical Atomic Spectrometry, accepted for publication.

Valdes, M. C., Bermingham, K. R., Simon, J. I., and Huang, S. Calcium isotope Cosmochemistry. Chemical Geology, special issue on Calcium Isotopes: Past lessons and future directions 571, 120396.

Valdes, M. C., Debaille, V., Berger, J., and Armytage, R. M. G. (2019). The effects of high- temperature fractional crystallization on calcium isotopic composition. Chemical Geology 509, 77-91. 

Kato, C., Moynier, F., Valdes, M.C., Dhaliwal, J.K., Day, J.M.D. (2015). Extensive volatile loss during formation and differentiation of the Moon from Zn isotopes in crustal rocks. Nature Communications 6, Article 7617.  

Valdes, M. C., Foriel, J., Moreira, M.A., and Moynier, F. (2014). The nature of Earth’s building blocks as revealed by calcium isotopes. Earth and Planetary Science Letters 394, 135-145.