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Professor, Emeritus

• Fields of Study

  • Integrated use of trace elements and Pb, Nd, Sr, Hf, and Os isotopes to model the petrogenesis of ultramafic xenoliths, arc lavas, layered mafic intrusions, and continental flood basalts
  • Application of U/Pb and 40Ar/39Ar geochronology to providing constraints on the evolution of continetal and oceanic arcs
  • Kinematic evolution of orogenic belts
  • Mantle and lower crust chemical geodynamics

• Education

  • Ph.D. Geology, University of California, Santa Barbara, 1984