Professor of Geochemistry Ph.D., California Institute of Technology, 1980
Isotope and trace element geochemistry; chemical evolution of earth's crust-mantle system; isotopic and chemical evolution of sea water.
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Department of Earth and Planetary Sciences 20 Oxford Street Cambridge, MA 02138 Telephone: (617) 495-5233 Fax: (617) 495-8839 Email: jacobsen@neodymium.harvard.edu