Metamorphic Geochemistry and
Biogeochemical Cycling
Group at
Lehigh University, Summer,
2008
Archean
(2.7 Ga) Abitibi pillow basalt near Rouyn, Quebec (CA), visited by G.
Bebout and L. Anderson
Contact Information:
Gray
E. Bebout, Professor
Department
of Earth and Environmental Sciences
31
Williams Drive
Lehigh
University
Bethlehem,
Pennsylvania 18015
Office:
610-758-5831
Laboratory:
610-758-6168
Abbreviated CV, G. Bebout
Recent
Research
at Lehigh University (Stable Isotope
Laboratory)
Nitrogen
Isotope (BioGeo)chemistry (OPPORTUNITIES
FOR NEW GRADUATE STUDENTS)
- analytical methods (experimentation with carrier gas
methods; Bebout et al., 2007, Chemical
Geology)
- field applications (cyclosilicates, behavior during partial melting,
fluid-mineral fractionation;
incorporation during microbial chemical alteration
of seafloor basalts)
Use of lake
sediment C and N
isotopes in paleoclimate reconstruction (paper
presented at 10th International
Paleolimnology
Symposium), New Jersey and Alaska, with Zicheng Yu, Lehigh University
ODP
Leg 185
Shorebased Science (N-C subduction budgets; see Sadofsky and Bebout,
G-cubed, 2004)
ODP
Leg 205
Shorebased Science (N
subduction budgets; see Li and Bebout, JGR, 2005, ODP SR Leg 205, 2006)
Devolatilization
and Paleohydrogeology in the Franciscan
Paleoaccretionary Complex
[Sadofsky and Bebout, 2003 (G-cubed), 2004 (International Geology Reviews),
2006, GSA International
Book Series
["Phase Relations, High Pressure Terranes, P-T-ometry, and Plate
Pushing"]
Fluid
flow in foreland fold and thrust belts (Idaho/Montana
and Appalachians, USA)
[Anastasio et al., 2004, AJS;
Rygel et al., 2006, Geofluids]
Tectonic
evolution of coastal southern California (with Marty Grove, UCLA, based
on the Catalina Schist, San Onofre
Breccia, and
as related to the evolution of the Peninsular Ranges Batholith)
OPPORTUNITIES FOR NEW GRADUATE STUDENTS
Sensitivity
of global carbonate-silicate models of atmospheric carbon dioxide to
changes in
subduction
input [with Lee Kump, Penn. State University; see Goldschmidt, 2005, paper]
We
have recently
analyzed
C-N
concentrations and isotopic
compositions
of sediment
[and altered seafloor
basalt] recovered on ODP Legs 185
and 205 [see
Sadofsky and Bebout, 2004, G-cubed;
Li and Bebout, 2005, JGR
and ODP Leg
205 Scientific Results),
with the goals of characterizing organic sources and
diagenetic history
and subduction input fluxes in
the Izu-Bonin-Mariana
and Central American convergent
margins. Locations for
ODP Sites 1149, 801, and also the
ongoing NanTroSEIZE project, are
shown on the
seafloor topographic map
above (image above is from Smith
and Sandwell Global Seafloor
Topography, NOAA and Scripps
Institution of
Oceanography).
Recent/Ongoing
Research
Based in Misasa, Japan (Pheasant Memorial Laboratory, ISEI):
Boron
Isotope Ion Microprobe Data for Catalina
Schist and Alps UHP Metasedimentary Tourmalines
[example, before
and after B-isotope ion probe
analyses; ~10 micron spots; Bebout and Nakamura, Geology, 2003]
Major
and Trace Element and Isotopic Compositions of Subduction-Zone
Melange Units
- amphibolite-grade melange in
Catalina Schist (Bebout and Barton, 2002, Chemical Geology)
- lawsonite-albite and lawsonite-blueschist grade (King et al., 2006,
EPSL; King et al.,
2007, Chemical Geology)
Subduction-Zone
Devolatilization
(Italian Alps, Turkey; with Eizo Nakamura,
Takuya Moriguti, Katsura Kobayashi)
- major/trace element geochemistry, SIMS work on HP/UHP eclogites (King
et al., 2004, G-cubed)
- Schistes Lustres, W. Alps devolatilization (Bebout, Agard, King,
Nakamura, 2003, Goldschmidt Conf. abstract;
2004, Proc. Water-Rock Symposium; manuscript in
preparation)
Summer, 2002, Field trip to
French/Italian Alps (HP/UHP devolatilization study)
(click
for photographs from this field
trip)
Earth
Materials & Isotopes Courses (click here)
PML (Pheasant
Memorial
Laboratory, Director Eizo Nakamura, Misasa, Japan)
ISEI (Institute for Study
of the Earth's Interior, Misasa, Japan)
[last
modified 6-21-08]
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