Iron Isotope Fractionation During Magmatic Differentiation in Kilauea Iki Lava Lake

Variations in the Lava of the 1959 Eruption in Kilauea Iki!

IN · RECENT YEARS the Hawaiian Islands have become of great importance in studies concerned with igneous petrogenic theory. This is partly because of the total absence in that region of sialic crust that might affect the formation of other rock types by its assimilation in rising magma. Partly, also, it is because of the extensive lateral and vertical exposure of successions of rocks, the struc...

Nitrogen in peridotite xenoliths: lithophile behavior and magmatic isotope fractionation

1: Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 W. Taylor Street, MC186, SES2440, Chicago, IL 60607, U.S.A. 2: Centre de Recherches Pétrographiques et Géochimiques, Nancy Université, CNRS, BP 20, 54501 Vandoeuvre Cedex France 3: Université Européenne de Bretagne, France. 4: Université de Brest ; CNRS ; UMR 6538 Domaines Océaniques; Institut Universitair...

Iron and oxygen isotope fractionation during photo-oxidation

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Hydrogen isotope fractionation during H

Hydrogen metabolism was studied in the anaerobic bacterium, Sporomusa sp. strain DMG 58, by measuring natural abundance levels of deuterium in H 2 , H 2 O, and individual fatty acids during acetogenic growth on H 2 / CO 2 . Four cultures were grown, each in medium with a distinct hydrogen-isotopic composition ( δ D-H 2 O). The δ D value of H 2 was quantified in the residual gas exiting the grow...

Diffusion-driven magnesium and iron isotope fractionation in Hawaiian olivine