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GEOTRACES: The Marine Biogeochemical Cycle of Trace Elements and Their Isotopes

GEOTRACES is an international programme that was created to accelerate research on the global marine biogeochemical cycles of trace elements and their isotopes. Research encompasses four principle themes: 1) micronutrient elements (e.g. Fe, Co, Zn, Mn, Cu), which are essential for life; 2) tracers of processes that supply elements to the ocean; 3) anthropogenic contaminants (e.g. Hg, Pb); 4) geochemical proxies used in paleoceanography (e.g. trace-metal stable isotopes, naturally occurring radionuclides). The strategies adopted by GEOTRACES provide a template that can be adopted by other programmes in emerging fields of geochemistry.

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