کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4717497 1638751 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Garnet–clinopyroxene and clinopyroxene geothermobarometry of deep mantle and crust eclogites and peridotites
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Garnet–clinopyroxene and clinopyroxene geothermobarometry of deep mantle and crust eclogites and peridotites
چکیده انگلیسی

Eclogite is one of the major types of xenoliths in kimberlite. An investigation of such xenoliths provides important constraints on the distribution of P and T within the upper mantle and its chemical composition. Garnet–clinopyroxene and clinopyroxene barometers are proposed for mantle eclogites and peridotites on the basis of CaTs solubility in clinopyroxene coexisting with garnet. Such barometers permit estimation of P–T conditions for eclogite and peridotite garnet–clinopyroxene assemblages, including those involving omphacite and Cr-diopside pyroxenes for the ranges 700 ≤ T ≤ 2100 °C and 1.5 ≤ P ≤ 22 GPa. The barometers were used to determine formation conditions of eclogitic and peridotitic inclusions in diamonds, diamond-bearing, diamond–graphite-bearing and diamond-free eclogites and peridotites from kimberlite pipes and metamorphic complexes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Lithos - Volume 106, Issues 1–2, November 2008, Pages 125–136
نویسندگان
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