Jaime D BarnesAssociate Professor, Department of Geological Sciences, Jackson School of Geosciences
My research interests encompass a broad spectrum of geochemistry, including stable isotope geochemistry, volatile cycling, metamorphism and volatile transport in subduction zones, serpentinization, and fluid-rock interactions and metasomatism in the high-T environment. Most of my research involves using stable isotopes as a geochemical tracer of fluids in various tectonic settings. However, I have been involved in a wide range of research including, the isotopic composition of lunar samples and hyperarid soils.
I oversee the High Temperature Stable Isotope Lab which houses a ThermoElectron MAT 253, silicate laser extraction line, chlorine purification line, and TC/EA. The lab has the capabilities for oxygen, hydrogen, chlorine, nitrogen, carbon, and sulfur analyses in silicates (terrestrial and extraterrestrial), atmospheric and volcanic gases, carbonates, fluid inclusions, water, and phosphates.
I am not accepting new graduate students for the 2017-2018 academic year.
Areas of Expertise
Stable isotope geochemistry, metamorphism and volatile transport in subduction zones, fluid-rock interaction and metasomatism, geochemical cycling, stable chlorine isotopes
Society for Teaching Excellence, member - University of Texas at Austin (2011)
G. Moses and Carolyn G. Knebel Distinguished Teaching Award - JSG (2010)
GSA Subaru Outstanding Woman in Science Award - Geological Society of America (2009)
L’Oréal USA For Women in Science Fellowship - American Association for the Advancement of Science on behalf of L’Oréal (2007 - 2008)
V.C. Kelly Outstanding Doctoral Candidate Scholarship - University of New Mexico (2006)
Best Doctoral Candidate - Department of Earth and Planetary Sciences, University of New Mexico (2006)
Sigma Xi “Excellence in Graduate Research” Award - University of New Mexico, Sigma Xi chapter (2006)
Association for Women in Science Educational Foundation Gail Naughton predoctoral award - AWIS (2005)
Association for Women Geoscientists (Denver Chapter) Outstanding Geoscience Student Award - AWG (2002 - 2003)
National Science Foundation Graduate Student Fellowship - NSF (2001 - 2004)
Miguel Cisneros, Ph.D., expected 2018
My research combines a broad range of disciplines, including geochemistry, structural geology, petrology, and chronology, to understand how high-pressure rocks from the Mediterranean are exhumed to the surface. I consider myself a myself a stable isotope geochemist who applies multiple techniques to understand large-scale tectonic problems including volatile sourcing and fluid flow in subduction zones, and exhumation of high-pressure rocks.
Emily Cooperdock, Ph.D., expected 2017
Research Interests: Method development for (U-Th)/He analysis; Fe-oxide (U-Th)/He dating; X-Ray Computed Tomography application to geologic samples; timing of serpentinization in tectonic processes; trace element cycling during serpentinization; magnetite formation; U and Th partitioning during metamorphism
Edward W Marshall, Ph.D., expected 2017
I am currently studying the Colorado Plateau lithospheric mantle (CPLM), via xenoliths samples from the ca. 25 Ma Navajo Volcanic Field. My approach uses stable and radiogenic isotopes, nominally anhydrous mineral water contents, and Platinum Group Element (PGE) concentrations in sulfides. My PhD breaks down into three interrelated projects: 1) the long term geochemical evolution of the CPLM starting in the Proterozoic, 2) the more recent hydration and metasomatic overprint, and 3) the behavior of PGE elements in the CPLM and their relationship with hydration and metasomatic processes. Analytical techniques that I am familiar with are laser fluorination analysis for oxygen isotopes, SIMS analysis of nominally anhydrous mineral water contents, clean lab chemical separation methods for analysis of the Rb-Sr, Sm-Nd, Lu-Hf and Re-Os radiogenic systems, laser ICP-MS analysis of trace elements, and electron microprobe analysis of major elements. Other interests and projects of mine are the geology of the Philadelphia area, Anorthosite genesis, and laser fluorination technique development.
Owen A Callahan, Ph.D., expected 2017
I am interested in fluid flow in faults and fractures, specifically the interplay between chemical alteration, mechanical deformation, and conduit evolution in hydrothermal systems.
Evan J Ramos, M.S., expected 2017
I am a MS candidate interested in understanding the mechanisms of fluid flow and stable isotope transport during contact metamorphism. With constraints from stable isotope geochemistry, geochronology, and thermodynamic modeling, I plan to develop a numerical model that characterizes the mechanisms that formed a skarn system in the Sierra Nevada Batholith. An overarching goal of this research is to understand CO2 mobility in the shallow crust as a means to quantify the amount and rate of CO2 production from metamorphic reactions.
Jeffery T Cullen, Ph.D., expected 2016 (Supervisor)
Michelle L Gevedon (Supervisor)
Jessica Errico, M.S., 2012
The University of Texas at Austin
“Subduction Zone Cycling of Chlorine”, Yale University, (2011)
“The global chlorine cycle: a subduction zone perspective”, GeoPRISMS Implementation Workshop: Subduction Cycles and Deformation, (2011)
“Chlorine stable isotopes as a geochemical tracer in subduction zones", University of Texas at Arlington, (2009)
Chlorine stable isotopes as a geochemical tracer in subduction zones", University of New Mexico, (2009)
“Chlorine isotope distribution on Earth”, University of Houston, (2008)
“Chlorine isotope distribution on Earth”, University of California, Berkeley, (2008)
“Chlorine isotope distribution on Earth”, Rensselaer Polytechnic Institute, (2008)
“Tracing fluids in subduction zones using chlorine stable isotopes", Tufts University, (2008)
“Chlorine isotope distribution on Earth”, University of Texas at Austin, (2008)
“Studying serpentinization, seafloor tectonics, and arc volcanism using Cl stable isotopes”, Central Washington University, (2007)
“Studying serpentinization, seafloor tectonics, and arc volcanism using Cl stable isotopes”, New Mexico Tech, (2007)
“Studying serpentinization, seafloor tectonics, and arc volcanism using Cl stable isotopes”, Kansas State University, (2006)
“Tectonic and metamorphic implications of high chlorine contents in serpentinites”, University of Maine, (2006)
“Tectonic and metamorphic implications of high chlorine contents in serpentinites”, Rice University, (2006)
|2015||Spring||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2014||Fall||GEO 401||Physical Geology|
|2014||Fall||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2014||Spring||GEO 371C/GEO 391||Ins Outs Of Subduction Zones|
|2014||Spring||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2013||Fall||GEO 401||Physical Geology|
|2013||Fall||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2013||Spring||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2012||Fall||GEO 401||Physical Geology|
|2012||Fall||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|
|2012||Spring||GEO 371C/GEO 391||Ins & Outs Of Subduction Zones|
|2012||Spring||GEO 394||Rsch In Hi-T Stbl Isotp Geochm|