B.S. (Geology; 9/81)
University of Texas at Austin
M.A. (Geology; 9/84) University of Texas at Austin
Thesis: Fluid Evolution and Transport during Metamorphism:
Evidence from the Llano Uplift, Texas
Ph.D. (Geology; 9/89)
University of California, Los Angeles (UCLA)
Dissertation: Geological and Geochemical Investigations
of Fluid Flow and Mass Transfer during Subduction-Zone
Metamorphism
Appointments/Involvements:
2019 -
present, Department Chair,
Lehigh University, Department of Earth and Environmental
Sciences 2017 - 2022, Specially Appointed
Professor, Institute
for Planetary Materials, Okayama University, Misasa,
Tottori, Japan
2003 - present, Professor, Lehigh
University, Department of Earth and Environmental Sciences
2013/2014 - Visiting Research Scientist,
Institute for Study of the Earth's
Interior, Okayama University, Misasa, Tottori, Japan
2011/2012 - Visiting Professor, Institute for
Study of the Earth's Interior,
Okayama University, Misasa, Tottori, Japan
2006 - COE21 Visiting
Foreign Professor, Institute for Study of the Earth's
Interior, Okayama University, Misasa, Tottori, Japan
2000 - Center of Excellence Visiting Foreign
Professor at Institute for Study of the Earth's Interior,
Misasa, Tottori, Japan
1992 - 2003 Assistant and Associate Professor,
Lehigh University, Department
of Earth and Environmental Sciences 1989 - 1991 Postdoctoral Fellow,
Geophysical Laboratory, Carnegie Institution of Washington
Honors/Awards:
Fellow — Mineralogical
Society of America (as of November, 2018)
Recent
Publications:
Bustos-Moreno, J. F., Bebout, G. E., Chen, Y.
-X, and Schertl, H. P., 2023,
Nitrogen behavior during fluid-rock interaction in a
continental subduction zone: Results from the UHP
Dora-Maira Massif whiteschists and Eastern Alps
leucophyllites, Lithos.
Barry,
P. H., Halldorsson, S. A.,
Furi, E., Kulongoski, J.,
Bebout, G., and Porcelli,
D., 2023,
Earth's volatile cycles
within the crust-mantle
system: A volume in memory
of Dave Hilton. Chemical
Geology.
Codillo,
E. A., Le Roux, V., Klein, B., Behn, M. D.,
Marschall, H., and Bebout, G. E., 2023, The
ascent of melanges: experimental constraints on
melange rock densities and solidus temperatures
in subduction zones. Earth and Planetary Science
Letters.
Bebout, G. E., Scholl, D. W., Stern, R. J., Wallace, L.
M., and Agard, P., 2022,
Completion of the Subduction Top to Bottom 2 (ST2B-2)
Themed Issue in GEOSPHERE. brief note in GSA
Today.
Scambelluri, M., Cannao, E., Guerini, S., Bebout, G. E.,
Epstein, G. S., Rotondo, F., Campomenosi, N., and Tartarotti,
P., 2022, Carbon mobility and exchange in a plate-interface
melange: A case study of meta-ophiolitic rocks in Champorche
Valley, Italian Alps. Lithos
Nikitczuk, M. P., Bebout, G. E., Geiger, C. A., Ota, T.,
Kunihiro, T., Mustard, J. F., Halldorsson, S. A., and Nakamura, E.,
2022, Nitrogen incorporation in potassic and micro- and
meso-porous minerals: Potential biogeochemical records and
targets for Mars sampling. Astrobiology.
Bebout, G. E., Ota, T., Kunihiro, T., Carlson, W. D., and
Nakamura, E., 2022, Lithium in garnet as a tracer of subduction
zone metamorphic reactions: The record in UHP metapelites at
Lago di Cignana, Italy, Geosphere.
Nikitczuk,
M. P., Bebout, G. E., Ota, T., Kunihiro, T., Mustard, J. F.,
Flemming, R. L., Tanaka, R., Halldórsson,S.
A., and Nakamura, E., 2022, Nitrogenous altered volcanic
glasses as
targets for Mars sample return: Examples from Antarctica and
Iceland, Journal of Geophysical Research-Planets.
Halama,
R., Bebout, G. E., and Bea, F., 2021, Nitrogen loss and
isotopic fractionation during granulite-facies metamorphism in
the lower crust (Ivrea Zone, NW Italy), Chemical Geology.
Epstein,
G. S., Bebout, G. E., Christenson, B. W., Sumino, H., Wada,
I., Werner, C., and Hilton, D. R., 2021, Cycling of CO2
and N2 along the Hikurangi subduction margin, New
Zealand: An integrated geological, theoretical, and isotopic
approach, Geochemistry, Geophysics, and Geosystems.
Rader, S.
T., Gaschnig, R. M., Owens, J. D., Bebout, G. E., Mirakian, M.
J., and Newby, S. M., 2021, Thallium behavior during
high-pressure metamorphism in the western Alps, Europe,
Chemical Geology.
Munoz-Montecinos,
J., Angiboust, S., Garcia-Casco, A., Glodny, J., and Bebout,
G. E., 2021, Episodic hydrofracturing and large-scale flushing
along deep subduction interfaces: Implications for fluid
transfer and carbon recycling (Zagros Orogen, southeastern
Iran), Chemical Geology.
Bebout,
G. E., 2020, Insights into subduction zone dynamics, (Invited) Encyclopedia
of Geology, 2nd edition, Elsevier.
Epstein,
G. S., Bebout, G. E., and Angiboust, S., 2020, Fluid and mass
transfer along transient subduction interfaces in a deep
paleo-accretionary wedge (Western Alps), Chemical Geology.
Halama, R.,
and Bebout, G., 2020, (Invited) Earth's
nitrogen and carbon cycles, in Introduction to reading
terrestrial planet evolution in isotopes and element
measurements, International Space Science
Institute.
Cannao, E.,
Scambelluri, M., Bebout, G. E., Agostini, S., Pettke, T., and
Godard, M., 2020, Ophicarbonate evolution from seafloor to
subduction and implications for deep-Earth C cycling, Chemical
Geology.
Cannao, E., Scambelluri, Tiepolo, M., and
Bebout, G. E., 2020, Into the deep and beyond: carbon and
nitrogen subduction recycling in secondary peridotites, Earth
and Planetary Science Letters.
Epstein, G. S., Bebout, G. E., Angiboust, S.,
and Agard, P., 2019, Scales of fluid-rock interaction and carbon
mobility in the deeply underplated and HP-metamorphosed Schistes
Lustres, Western Alps. Lithos.
Tartarotti, P., Guerini , S., Rotondo, F.,
Festa, A., Balestro, G., Bebout, G. E., Cannaò, E., Epstein, G.
S., and Scambelluri, M., 2019, Superposed sedimentary and
tectonic block-in-matrix fabrics in a subducted serpentinite
mélange (high-pressure Zermatt Saas ophiolite, Western Alps).
Geosciences, 9, 358.
Barnes, J. D., Penniston-Dorland, S. C.,
Bebout, G. E., Hoover, W., Beaudoin, G. M., and Agard, P., 2019,
Chlorine and lithium behavior in metasedimentary rocks during
prograde metamorphism: A comparative study of exhumed subduction
complexes (Catalina Schist and Schistes Lustres), Lithos.
House, B. M., Bebout, G. E., and Hilton, D.
R., 2019, Carbon cycling at the Sunda margin, Indonesia: A
regional study with global implications, Geology.
Nakamura, E., Kunihiro, T., Ota, T., Sakaguchi,
C., Tanaka, R., Kitagawa, H., Kobayashi, K., Yamanaka, M.,
Shimaki, Y., Bebout, G. E., Miura, H., Yamamoto, T., Malkovets,
V., Grokhovsky, V., Koroleva, O., and Litasov, K., 2019,
Hypervelocity collision and water-rock interaction in space
preserved in the Chelyabinsk ordinary chondrite, Proceedings of
the Japan Academy.
Jaeckel, K., Bebout, G. E., and Angiboust, S.,
2018, Deformation-enhanced fluid and mass transfer along Western
and Central Alps paleo-subduction interfaces: Significance for
carbon cycling models, Geosphere, v. 14,
doi.org/10.1130/GES01587.1.
Anderson, L. D., Bebout, G. E., Izawa, M. R.
M., Bridge, N. J., and Banerjee, N. R., 2017, Chemical
alteration and preservation of sedimentary/organic nitrogen
isotopic signatures in a 2.7 Ga seafloor volcanic sequence,
International Journal of Astrobiology,
doi.org/10.1017/S1473550417000441.
Bebout, G. E., Banerjee, N. R., Izawa, M. R.
M., Kobayashi, K., Lazzeri, K., Ranieri, L., and Nakamura, E.,
2017, Nitrogen concentrations and isotopic compositions of
seafloor-altered terrestrial basaltic glass: Implications for
astrobiology, Astrobiology, v. 18, no. 4, DOI:
10.1089/ast.2017.1708.
Bebout, G. E., Scholl, D. W., Stern, R. J.,
Wallace, L. M., and Agard, P., 2017, Twenty years of subduction
zone science: Subduction Top to Bottom 2 (ST2B-2), GSA Today, v.
28, doi: 10.1130/GSATG354A.1.
Angiboust, S., Yamato, P., Hertgen, S.,
Hyppolito, T., Bebout, G. E., and Morales, L., 2016, Fluid
pathways and high pressure metasomatism in a subducted
continental slice (Mt. Emilius klippe, W. Alps), Journal of
Metamorphic Geology, DOI: 10.1111/jmg.12241.
Lazzeri, K. E., Bebout, G. E., and Geiger,
C.A., 2016, Nitrogen and carbon concentrations and isotopic
compositions of the silica clathrate melanophlogite, American
Mineralogist, http://dx.doi.org/10.2138/am-2016-5876.
Sievers, N. E., Tenore, J., Bebout, G. E., and
Penniston-Dorland, S. C., 2016, Fingerprints of forearc element
mobility in blueschist-facies metaconglomerates, Catalina
Schist, California, International Geology Reviews.
Halama, R., Bebout, G. E., John, T., and
Marschall, H., 2016, Fluid-induced breakdown of white mica
controls nitrogen transfer during fluid-rock interaction in
subduction zones, International Geology Reviews.
Bebout, G. E., 2016, Caesium: Element and
Geochemistry, invited chapter for Encyclopedia of Geochemistry,
Earth Science Series, Springer.
Scambelluri, M., Bebout, G. E., Belmonte, D.,
Gilio, M., Campomenosi, N., Collins, N. C., and Crispini, L.,
2016, Carbonation of subduction-zone serpentinite (high-pressure
ophicarbonate; Ligurian Western Alps) and implications for the
deep carbon cycling. Earth and Planetary Science Letters,
doi:10.1016/j.epsl.2016.02.034.
Bebout, G. E., and Penniston-Dorland, S. C.,
2015, Fluid and mass transfer at subduction interfaces—The field
metamorphic record (Invited Review Article), Lithos, DOI:
10.1016/j.lithos.2015.10.007.
Collins, N. C., Bebout, G. E., Angiboust, S.,
Agard, P., Scambelluri, M., Crispini, L., and John, T., 2015,
Subduction zone metamorphic pathway for deep carbon cycling: II.
Evidence from HP/UHP metabasaltic rocks and
ophicarbonates. Chemical Geology, DOI:
10.1016/j.chemgeo.2015.06.012.
Bebout, G. E., Lazzeri, K. E., and Geiger, C.
A., 2015, Pathways for nitrogen cycling in Earth's crust and
upper mantle: A review and new results for microporous beryl and
cordierite (Invited Centennial Article), American
Mineralogist, DOI: 10.2138/am-2015-5363.
Cook-Kollars, J., Bebout, G. E., Collins, N.
C., Angiboust, S., and Agard, P., 2014, Subduction zone
metamorphic pathway for deep carbon cycling: I. Evidence from
HP/UHP metasedimentary rocks, Italian Alps, Chemical Geology,
DOI: 10.1016/j.chemgeo.2014.07.013.
Penniston-Dorland, S., Gorman, J. K., Bebout,
G. E., Piccoli, P. M., and Walker, R. J., 2014, Reaction rind
formation in the Catalina Schist: Deciphering a history of
mechanical mixing and metasomatic alteration, Chemical Geology,
DOI: 10.1016/j.chemgeo.2014.06.024.
Bebout, G. E., Fogel, M. L., and Cartigny, P.,
2013, Nitrogen: Highly volatile yet surprisingly
compatible, for special issue of ELEMENTS (Nitrogen and its
(BioGeoCosmo)Chemical Cycling, editors Bebout, G. E., Fogel, M.
L., and Cartigny, P.), DOI: 10.2113/gselements.9.5.333.
Busigny, V., and Bebout, G. E., 2013, Nitrogen in the silicate Earth: Speciation and
isotopic behavior during fluid-mineral interactions, for special
issue of ELEMENTS (Nitrogen and its (BioGeoCosmo)Chemical
Cycling, editors Bebout, G. E., Fogel, M. L., and Cartigny, P.),
DOI: 10.2113/gselements.9.5.353.
Godfrey, L. V., Poulton, S. M., Bebout G. E.,
and Fralick, P. W., 2013, Stability
of the nitrogen cycle during development of sulfidic water in
the redox-stratified late Paleoproterozoic Ocean, Geology, v.
41, 655-658 DOI: 10.1130/G33930.1.
Bebout, G. E., Agard, P., Kobayashi, K.,
Moriguti, T., and Nakamura, E., 2013, Devolatilization and trace
element mobility in deeply subducted sedimentary rocks: Evidence
from Western Alps HP/UHP suites, Chemical Geology, v. 342, 1-20,
DOI: 10.1016/j.chemgeo.2013.01.009.
Bebout, G. E., 2013, (Invited) 4.20.
Chemical and Isotopic Cycling in Subduction Zones, in
Rudnick, R. L., ed., The Crust, Treatise on Geochemistry (eds.
H. D. Holland and K. K. Turekian, Second Edition),
Elsevier-Pergamon, Oxford., pp. 703-747.
Some Other Recent Activities:
2023
Co-convener (with Ikuko Wada, Dave Scholl, and Don Fisher)
of session at Fall AGU meeting in San Francisco, California,
December, 2023 ("Subduction Top to Bottom (ST2B) - The
Nature of the Subduction Interface, Earthquakes, and the
Roles of Fluids")
2022 Co-convener (with Dave Scholl, Bob Stern, and Ikuko
Wada) of session at Fall AGU meeting in Chicago, Illinois,
December, 2022 ("Subduction Top to Bottom: Origin and
Evolution of Magmatic Arcs") - 32 abstracts
2021 Co-convener (with Dave Scholl, Bob Stern, and
Ikuko Wada) of session at
Fall AGU meeting held in New Orleans, Louisiana, December,
2021 ("Subduction Top to Bottom 2 (ST2B-2): Focus on the
Forearc") - 65 abstracts
2020 Co-convener (with Dave Scholl, Bob Stern, and Laura
Wallace) of session at Fall
AGU meeting held in San Francisco, California, December, 2020
("Subduction Top to Bottom 2 (ST2B-2): A Major Publication Venture
Celebrating 20 Years of Subduction Zone Science") - 31 abstracts
2019 Co-convener (with Dave
Scholl, Bob Stern, and Laura Wallace) of session at Fall AGU meeting held in
San Francisco, California, December, 2019 ("Subduction Top to
Bottom 2 (ST2B-2): Processes and Products Modern and Ancient") -
72 abstracts
2019 Co-convener (with Dave
Scholl, Bob Stern, and Laura Wallace) of session at Annual GSA meeting held in
Phoenix, Arizona, September, 2019 ("Subduction Top to Bottom 2,
Ancient and Modern")
2018 Co-convener (with Dave
Scholl, Bob Stern, and Laura Wallace) of session at Fall AGU
meeting in Washington, D.C., December 10-14, 2018 ("Subduction
Top to Bottom-2") - 69 abstracts
2017 Co-convener (with Dave
Scholl, Bob Stern, and Philippe Agard) of session at Fall AGU
meeting in New Orleans, December 11-15, 2017 ("Subduction Top to
Bottom 2, with a Caribbean Flavor") - 63 abstracts
2017 Co-convener (with Dave
Scholl, Bob Stern, Anne Trehu, Joan Gomberg, and Thomas W.
Sisson) of session at
Annual GSA meeting in Seattle Washington, October 22-25, 2017
("Subduction Top to Bottom 2 (ST2B-2), Cascadia and Beyond") -
37 abstracts
2016 Co-convener
(with Dave Scholl, Bob Stern, Laura Wallace, and Philippe
Agard) of session at Fall AGU meeting in San Francisco Dec.
12-16, 2016 ("Subduction Top to Bottom 2") - 136 abstracts
2015 Lead
editor for "Subduction Top to
Bottom 2" (ST2B-2;
with co-editors Dave Scholl, Bob Stern, Laura Wallace, and
Philippe Agard), an all-electronic publication (published in
GEOSPHERE; with 74 papers).
This project was a followup to the 1996 AGU Geophysical
Monograph v. 96 ("Subduction Top to Bottom")
2013 Co-convener
(with Marilyn Fogel and Pierre Cartigny) of Union Session at
Goldschmidt Conference, August, 2013 ("Frontiers in Nitrogen
(BioGeoCosmo)Chemistry") 2012 - 2013 Co-editor
of special issue of ELEMENTS (Geochemical Society publication) on
"Nitrogen and its (BioGeoCosmo)Chemical Cycling" (co-editors
Marilyn Fogel and Pierre Cartigny; issue was published in October,
2013) 2011 Union
Session Co-chair, Fall AGU Meeting, San Francisco ("Physical and
Chemical State of Subducting Slabs and the Slab-Mantle Interface:
Forearc, Subarc, and Beyond"; with Sarah Penniston-Dorland, Geoff
Abers, and Philippe Agard) 2010 - present Member
of Scientific Committee, International Lithosphere Program, Task
Force IX: Deep Into the Subduction Channel (DISC), Project Leaders
P. Agard, A. Okay, B. Hacker, and T. Gerya (and participation in
Workshop 2011, W. Alps, held in Sampeyre, Italy, summer, 2011) 2010 Session
Co-chair, Fall AGU Meeting, San Francisco ("Metamorphic
Perspectives of Subduction Zone Evolution"; with Brad Hacker and
Horst Marschall) 2009 Invited
lecturer/instructor at EURISPET (European Intensive Seminars of
Petrology), Granada, Spain, "High-Pressure Metamorphism and
Subduction Zones") 2008 Session
Co-chair, Fall AGU Meeting, San Francisco ("Subduction Zone
Metamorphism: Fluid-Rock Interaction in Space and Time"; with
Maureen Feineman, Jay Ague, and Ivan Savov) 2008 Session
Co-chair, 2008 Goldschmidt Conference, Vancouver, Canada
("Isotopic Biogeochemical Tracers into the Ancient Rock Record";
with Pierre Cartigny and James Farquhar) 2007 Invited
participation in ExxonMobil Symposium on Non-Hydrocarbon Gases
(Houston, Texas, March, 2007; "Transfer of Organic Nitrogen
through Diagenesis and Low- to High-Grade Metamorphism (and
Beyond): An Isotopic Perspective")
Some Recent (active) Collaborators (see
the Stable Isotope Laboratory web page):
Samuel Angiboust - IPGP,
Paris
Jaime Barnes - University of
Texas, Austin
Enrico Cannao - University of
Milan
Bill Carlson - University of
Texas, Austin
Yi-Xiang. Chen - USTC, Hefei, China
Bruce Christenson -
GNS Science, Wellington, New Zealand
Richard Gaschnig - University
of Massachusetts, Lowell
Charles Geiger - Universität
Salzburg
Ralf Halama - Keele
University, UK
Katsura Kobayashi - IPM, Misasa,
Japan
Takuya Kunihiro - IPM, Misasa,
Japan
Jack Mustard - Brown
University
Eizo Nakamura - IPM, Misasa,
Japan
Tsutomu Ota - IPM, Misasa,
Japan
Marco Scambelluri -
University of Genova, Italy
Hirochika Sumino -
University of Tokyo
Ikuko Wada - University of
Minnesota
Cynthia Werner - USGS
