My research projects have included:

• Field study and geochemical investigation of the origin of metamorphosed volcanic rocks and igneous intrusions in the southwest Alaska accretionary prism, Kodiak Islands, Shumagin-Sanak Islands and the Alaska Peninsula; major and trace element study using XRF and neutron activation analysis; mass spectrometric study of strontium and neodymium isotope variations.
• Field study and geochemical study of the zoned Eagle Peak Pluton, central Sierra Nevada, California; neutron activation trace element study, stable isotope (oxygen) and radiogenic isotope (strontium, neodymium) analyses.
• Trace element geochemistry study of the Bushveld Granite, South Africa and Gaborone Granite, Botswana (neutron activation analysis), while on a National Research Council Postdoctoral Fellowship with the U.S. Geological Survey, Denver.
• Trace element geochemistry and strontium-neodymium isotope analyses of volcanic rocks from the H.S. Washington Collection, Barren Island and Narcondam Island, Indian Ocean.
• Field and geochemical study of igneous and metamorphic rocks from eastern Massachusetts
• Field and geochemical study of a gabbro-granite intrusive complex in the Coastal Maine Igneous Province, in the Calais, Maine region; contract from the Maine Geological Survey.