Dr. Peter L. Roeder, Professor Emeritus
Ph.D., Pennsylvania, 1960

Office: Miller 219, Phone: (613) 533-6185,
Fax (613) 533-6592,
E-mail: roeder@geol.queensu.ca

Research Interests

The major research interest of Peter Roeder is the equilibrium distribution of elements between chromite, olivine and basaltic melt. The research has involved experiments under controlled oxygen fugacity in multi-component systems and using basaltic starting materail. Electron-microprobe analysis and preparation of glass standards of REE and Cr are an important part of this research.

A database of 22,000 chromite, spinel and magnetite analyses from the literature has been collected in order to better understand the equilibrium between spinel and basaltic melt. This database is available by sending an e-mail request. Our present research involves analysis and interpretation of chromite and co-existing basaltic glass and a study of equilibrium crystallization and diffusion-controlled crystallization of chromite in mid-ocean-ridge basalt.