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Victoria J. Orphan

James Irvine Professor of Environmental Science and Geobiology
Contact information for Victoria J. Orphan
Contact Method Value
Mail Code: MC 100-23
Office: 109A North Mudd (Seeley W. Mudd Lab)
Phone: 626-395-1786
Email: vorphan@​
Administrative Assistant:
B.A., University of California (Santa Barbara), 1994; Ph.D., 2002. Assistant Professor, Caltech, 2004-2010; Associate Professor, 2010; Professor, 2010-16; James Irvine Professor 2016-.

Research Interests

Molecular microbial ecology of anaerobic communities involved in carbon and sulfur cycling; application and development of combined molecular and isotopic methods for relating uncultured microorganisms to biogeochemical processes and understanding interspecies interactions. Specific research interests include microbial community structure and function in deep subsurface habitats, marine sediments, oil and gas seeps, and early Earth analog environments.

Selected Publications

For a complete publications list, see