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Education:
A. B., Princeton University (Geology), Magna cum Laude, 1971
M. S., Stanford University (Geophysics), 1972
Ph.D., Australian National University, 1976
Research Interests:
Geochronology and petrogenesis of ocean floor and oceanic island basalts applied to modeling crustal movements in the ocean basins; geochemistry of oceanic basalts to map upper mantle heterogeneities; hydrothermal alteration of midocean ridge basalts; the origin, composition, timing and environmental effects of large igneous processes.
Current Research:
K/Ar and 40Ar/39Ar geochronology of ocean floor and ocean island basalts, applied to modeling crustal movements and the evolution of ocean basins; geochronology and geochemistry of episodic volcanism in the Coast Ranges of Oregon and Washington, and the formation of the continental border of the Pacific Northwest; geochronology applied to the evolution of the Western Cascades volcanic arc; geochronology of alteration minerals in seafloor basalts to date the longevity of hydrothermal circulation; the origin of large igneous provinces on continents and in ocean basins.
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