Alexander von Humboldt Stiftung Fellowship, Institut fur Mineralogie, Ruhr-Universitat, Bochum, Germany;

     Sept. 1985 - Oct. 1987. High P - high T experimental mineral stability and phase relations

Ph.D. 1985, Geological Sciences (Metamorphic Petrology), Southern Methodist University, Dallas, TX

    A Staurolite Trilogy: I. Lithium in staurolite and its petrologic significance II. An experimental determination of the upper stability of  

     staurolite plus quartz III. Evidence for multiple metamorphic episodes in the Farmington Quadrangle, Maine.

M.S. 1980, Geological Sciences (Vertebrate Paleontology), Southern Methodist University, Dallas, TX

      Metric analysis of a  Late Pleistocene mammoth  assemblage, Hot Springs, South Dakota

B.S.  1977,  Earth Sciences, Chadron State College, Chadron, NE

Adolphe G. Gueymard Distinguished Professor, Louisiana State University; 2002-present

Visiting Professor, University of Arizona, Tucson, 2008 sabbatical

Professor, Louisiana State University; 2002-present

Associate Professor, Louisiana State University; 1995-2002

Assistant Professor, Louisiana State University; 1992-1995

Visiting Scientist, Los Alamos National Lab; 1993-present

Visiting Assistant Professor, University of Iowa; 1990-1992

Assistant Professor-Research, Louisiana State University; 1985-1990

Research Associate, University of Arizona, 1989-1991; Visiting Scientist,.April-June, 1988;

    focus on fluid flow and chemical transport; fluid-rock interactions

Consulting Geologist, Mobil Exploration and Producing Services, Inc., (MEPSI) Dallas, TX; 1980-85, 1988;

    Full-time geologist January - June 1980. Evaluation of hydrocarbon potential for carbonates, sandstones,volcaniclastics from the North Slope, Alaska; North Sea; Monteray Formation, CA.

Expert Witness, Taylor, Porter, LLP, Baton Rouge, LA, 2001, 2005, 2009;

     Chemical composition and structure of asbestiform silicates.

Expert Witness: Akin, Gump, Hauer, Strauss and Feld, LLP, Washington, D.C. 1997-1998,

     Microanalyses and chemical characterization of slags.

Instructor, Southern Methodist University; taught Mineralogy, Fall 1982 and 1984

Research Assistant, Southern Methodist University; 1981-1984

Teaching Assistant, Southern Methodist University; 1978-81

    Igneous & Metamorphic Petrology, Optical Mineralogy, Mineralogy, Structural Geology, Intro Geology.

Assistant supervisor and cartographer, Hot Springs Mammoth Site, SD. summers 1976-1979

Field Assistant, National Geographic Expeditions to Panama,  Collection of early Tertiary mammals,

     Canal Zone and Balboa, Panama. January, 1979; Prof. Slaughter, SMU, PI

Field Assistant, Excavation of vertebrates at Trolinger Springs Mastadon Site, MO. Illinois State Museum. Dr. J

     Saunders, PI; June-July, 1978

Field Assistant, Excavation of Brewer Pueblo, Dove Creek, Colorado. June, 1978, Northern Arizona University,   

Cartographer, Hudson-Meng Bison Kill Site, NE, July, 1975, CSC, Prof. Agenbroad, PI

Field Assistant, Lehner Ranch Mammoth Kill Site,  AZ, July, 1975; Univeristy of Arizona, C.V. Haynes, PI

Field Assistant, Geologic mapping of Pleistocene terraces, Grand Gulch, Utah; June, 1975; CSC,

Barb with iguanas, Galapagos.