ABOUT THE ALASKA
SCIENCE CENTER

• • Office Information
  • Employee Directory
  • Employment
  • Request for Quotes
  • USGS Bureau Phonebook
  • Interdisciplinary Science

SCIENCE OFFICES

• • Biology
  • Geography
  • Geology
  • Water

CONFERENCES

• Conferences and Workshops

USGS ALASKA DATA RESOURCES

• Alaska Geospatial Data
• Recent Earthquakes
• Science Questions and Information Requests
• Geotagged Oblique Aerial Photos from Alaska
• Permafrost and Climate Monitoring Network
• Water data
• Volcanoes

OTHER ALASKA AREA
SCIENCE OFFICES

• • U.S. Volcanoes and Current Activity Alerts
  • Alaska Volcano Observatory

Education and/or Training

Ph.D.	2011	University of California, Santa Cruz, CA	Earth Sciences
M.S.	2005	Northern Arizona University, Flagstaff, AZ	Geology
B.S.	1999	University of Florida, Gainesville, FL	Geology

Areas of Specialization and/or Research Interests

Igneous petrology and isotope geochemistry, with particular emphasis on the origin and evolution of melts associated with subduction zones.

Professional Experience

2012 - Present	Research Geologist, USGS Alaska Science Center, Anchorage, Alaska
2011 - 2012	Postdoctoral Research Associate, WWU - University of Münster
2005 - 2011	Research and Teaching Assistant, University of California, Santa Cruz, CA

Professional Activities and/or Memberships

American Geophysical Union
Geochemical Society
Geological Society of America
InterRIDGE

Significant Recent Publications

Todd, E., Gill, J. B., Pearce, J. A., 2012. A variably enriched mantle wedge during arc stages following subduction initiation in the southwest Pacific. Earth and Planetary Science Letters 335, 180-194.

Todd, E., Gill, J. B., Wysoczanski, R. J., Hergt, J. M., Wright, I. C., Leybourne, M. I., Mortimer, N., 2011. Hf isotopic evidence for small-scale heterogeneity in the mode of mantle wedge enrichment: Southern Havre Trough and South Fiji Basin back-arcs. Geochemistry, Geophysics, Geosystems Q09011, DOI: 10.1029/2011GC003683.

Todd, E., Gill, J. B., Wysoczanski, R. J., Handler, M. R., Wright, I. C., Gamble, J. A., 2010. Sources of constructional cross-chain volcanism in the southern Havre Trough: New Insights from HFSE and REE concentration and isotope systematics. Geochemistry, Geophysics, Geosystems 11 (Q04009), 31 pp.

Wysoczanski, R. J., Todd, E., Wright, I. C., Leybourne, M. I., Hergt, J. M., Adam, C., Mackay, K., 2010. Backarc rifting, constructional volcanism and nascent disorganised spreading in the southern Havre Trough backarc rifts (SW Pacific). Journal of Volcanology and Geothermal Research 190 (1-2), 39-57.

Gill, J., Todd, E., Drewes, E., Ishizuka, O., Tani, K., Campbell, I. H., 2009. Creating new continental crust Fiji-Tonga. In: Geochimica et Cosmochimica Acta, vol. 73, no. 13S. p. A436.