1. Leg 209 Summary: Processes in a 20-km-Thick Conductive Boundary Layer beneath the Mid-Atlantic Ridge, 14°–16°N
ABSTRACT
INTRODUCTION
IGNEOUS PROCESSES
STRUCTURE AND TECTONICS
CONTRIBUTIONS TO GLOBAL GEOCHEMISTRY
Osmium Isotope Geochemistry
Trace Element Geochemistry and the Pb Paradox
Zircon Provenance (Ridge vs. Arc Zircons)
GEOBIOLOGY
AEROBIOLOGY
ACKNOWLEDGMENTS
REFERENCES
CHAPTER NOTES
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