کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6440551 1638654 2015 48 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Origin of mafic and ultramafic cumulates from the Ditrău Alkaline Massif, Romania
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Origin of mafic and ultramafic cumulates from the Ditrău Alkaline Massif, Romania
چکیده انگلیسی
Lamprophyre dykes of the Ditrău 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Lithos - Volume 239, 15 December 2015, Pages 1-18
نویسندگان
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