| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6438738 | Geochimica et Cosmochimica Acta | 2014 | 31 Pages |
Abstract
MELTS (Ghiorso and Sack, 1995; Asimow and Ghiorso, 1998) models of one VLT, one low-Ti and two high-Ti mare basalts and one KREEP basalt all show evolution from low to high Fe# residual liquids during fractional crystallization; however strong enrichments in FeO-concentrations are limited to the VLT and low-Ti liquids. In the high-Ti liquids, crystallization of Fe-Ti-oxides prevents enrichment in FeO, and the increases in Fe# are due to depletion of MgO. Fe-Ti-oxide fractionation results in steady silica-enrichment in the high-Ti mare compositions. Intervals of FeO-enrichment on the VLT and low-Ti mare liquid lines of descent are linked to shifts from olivine to pyroxene crystallization. The onset of plagioclase feldspar crystallization limits the depletion of FeO during crystallization of one high-Ti mare basalt and of the KREEP basalt composition modeled.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Timothy J. Fagan, Daiju Kashima, Yuki Wakabayashi, Akiko Suginohara,