Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6440551 | Lithos | 2015 | 48 Pages |
Abstract
Lamprophyre dykes of the DitrÄu Alkaline Massif are proposed to reflect multiple basanitic parental magma batches from which the cumulus olivine and clinopyroxene crystallised. Relative to these dykes the calculated equilibrium melts for intercumulus amphibole in the cumulates was more primitive whilst that for the cumulus amphibole was more evolved. The calculated crystallisation temperature and pressure of ~ 1000-1050 °C and ~ 0.7 GPa, based on the composition of the amphiboles, indicate crystallisation at lower crustal depths. Rare earth element compositions are consistent with an intra-plate tectonic setting.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Elemér Pál-Molnár, Anikó Batki, EnikÅ Almási, Balázs Kiss, Brian G.J. Upton, Gregor Markl, Nicholas Odling, Szabolcs Harangi,