Incompatible trace element abundances of basanite from Nanzaki volcano, Izu peninsula.

Trace element abundances of high - MgO glasses from Kilauea

We performed an ion-microprobe study of eleven high-MgO (6.7±14.8 wt%) tholeiite glasses from the Hawaiian volcanoes Kilauea, Mauna Loa and Ha-leakala. We determined the rare earth (RE), high ®eld strength, and other selected trace element abundances of these glasses, and used the data to establish their relationship to typical Hawaiian shield tholeiite and to infer characteristics of their sou...

Kliuchevskoi Volcano, Kamchatka Peninsula

Trace Element Geochemistry of Peridotites from the Izu - Bonin - Mariana Forearc , Leg 125

Trace element analyses (first-series transition elements, Ti, Rb, Sr, Zr, Y, Nb, and REE) were carried out on whole rocks and minerals from 10 peridotite samples from both Conical Seamount in the Mariana forearc and Torishima Forearc Seamount in the Izu-Bonin forearc using a combination of XRF, ID-MS, ICP-MS, and ion microprobe. The concentrations of incompatible trace elements are generally lo...

Petrogenesis of high-CaO lavas from Mauna Kea, Hawaii: Constraints from trace element abundances

The role of a mafic component in the petrogenesis of Oceanic Island Basalts (OIBs) is highly debated. As the best studied OIB, Hawaiian lavas provide critical insights into OIB genesis. At a given MgO content, the CaO content in the melt has been used to distinguish between partial melts of peridotite and garnet pyroxenite/eclogite. However, calculations using the BATCH program show that CaO co...

The origin of aubrites: Evidence from lithophile trace element abundances and oxygen isotope compositions