Possible
thesis/dissertation topics:
Evolution of the oceanic lithosphere: platinum group element and Re-Os
isotope study of mantle xenoliths from the Azores and Canary Islands.
Platinum
group element and Re-Os isotope study of Kamchatka mantle xenoliths: implications
for subduction processes..
Lithium
isotopes as a tracer of subduction zone processes: Kamchatka lavas and
crustal and mantle xenoliths.
Current/recent
graduate student research:
Darin Snyder (Ph.D. 2004) Isotope and U-series disequilbria constraints
on shallow magmatic processes and timescales, Fogo Volcano, Sao Miguel,
Azores.
Amy Gelinas
(M.S. in progress) Isotopic constraints on the nature of the Azores mantle
sources.
Andrea
Rowland-Smith (M.S. in progress). Isotopic study of shallow magmatic processes
in the Azores.
Shizuko
Watanabe (M.S. 2003, Ph.D. in progress) Isotope and trace element variations
in the Fuji 1707 Deposit, Japan: implications for magmatic processes.
Qing
Meng (Ph.D. in progress) Application of Re-Os isotope system to subduction
processes in China and Izu arc.
Huimin
Yu (Ph.D. in progress) Re-Os, Pt-Os and Lu-Hf isotope systematics in the
Azores.
Selected
publications:
Watanabe, S., Widom, E., Ui, T., Miyaji, N. and Roberts, A.M. (2005, in
press), The Evolution of a Chemically Zoned Magma Chamber: the 1707 Eruption
of Fuji Volcano, Japan.
Widom,
E., Gaddis, S.J. and Wells, N.E. (2004), Re-Os Isotope Systematics in
Carbonates from Serpent Mound, Ohio: Implications for Re-Os Dating of
Crustal Rocks and Orodovician Seawater Os Isotopic Composition. Geochemistry,
Geophysicss and Geosystems (G3).
Snyder,
D.C., Widom, E., Pietruska, A. and Carlson, R.W. (2004), The role of open
system processes in the development of silicic magma chambers: a chemical
and isotopic investigation of the Fogo A trachyte deposit, Sao Miguel,
Azores. Journal of Petrology 45, 723-738.
Widom,
E., Kepezhinskas, P., and Defant, M. (2003), Slab-fluid metasomatism of
the Kamchatka sub-arc mantle wedge: perspectives from Re-Os isotope signatures
in peridotite xenoliths. Chemical Geology 196, 283-306.
Widom,
E. and Farquhar, J. (2003), Oxygen isotope signatures in olivines from
Sao Miguel, Azores: implications for crustal and mantle processes. Chemical
Geology 193 237-255.
Selected
grants:
National Science Foundation 2005 - 2008
Origin of Mantle Heterogeneity in the Azores.
National
Science Foundation 2003 - 2006
Mantle and Fluid Evolution Across the Izu Arc.
National
Science Foundation 2002 - 2006
Magma fractionation processes and timescales: Fogo, Furnas and Fuji Volcanoes.
Teaching
Interests:
GLG 111
- The Dynamic Earth - click here
for a complete description.
GLG 211 - Chemistry of Earth Systems - click here
for a complete description.
GLG 417/517 - Chemistry of Earth's Interior - click here
for a complete description.
GLG 427/527 - Isotope Geochemistry - click here
for a complete description.
GLG 499/599U - Techniques in Isotope Geochemistry and Mass Spectrometry.
GLG 617 - Chemistry of Earth's Interior - click here
for a complete description.
GLG 770 - Advanced Topics in Isotope Geochemistry - click here
for a complete description.
For
more information please send Dr. Widom an email.
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