Margo Regier
Carnegie Postdoctoral Fellow


Research Interests

Geochemistry, diamond formation, deep carbon cycle


University of Alberta, Earth and Atmospheric Sciences, PhD, 2020

Arizona State University, School of Earth and Space Exploration, MSc, 2016

Beloit College, Geology, BSc, 2014  

Contact & Links

  • (202) 478-8464
  • Earth and Planets Laboratory
    Carnegie Institution for Science
    5241 Broad Branch Road, NW
    Washington, DC 20015-1305
  • Twitter
  • Curriculum Vitae
  • Personal Website


Margo is a geochemist who specializes in investigating the mineral and fluid imperfections found within natural diamonds. These samples have the unique ability to preserve a pristine chronicle of Earth’s ancient history – including the building of continents and the onset of subduction. 

During her fellowship, Margo will examine the radiogenic and non-traditional isotopic composition of fluid-rich diamonds from kimberlite localities around the world. In addition, she hopes to investigate the fractionation of non-traditional isotopes between deep mantle melts and minerals with multi-anvil experiments. These studies will establish the depths from which diamonds are derived and will identify the origin of the deep heterogeneities found within Earth’s interior.

Prior to joining the Earth and Planets Laboratory, Margo completed her PhD at the University of Alberta under the supervision of Dr. Graham Pearson and Thomas Stachel. In 2020, she received the Governor General’s Gold Medal for her dissertation focused on mantle xenoliths and diamonds brought to Earth’s surface via kimberlite magmatism. Margo is also a fierce advocate for transforming the Earth Scientists into a diverse and inclusive academic community.