کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4742209 1641561 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relative strength of the pyrope–majorite solid solution and the flow-law of majorite containing garnets
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
Relative strength of the pyrope–majorite solid solution and the flow-law of majorite containing garnets
چکیده انگلیسی

Even though the garnet phase is the second most abundant phase in the upper-mantle and transition-zone, no previous studies have directly measured the effect of majorite content on the strength of garnet under mantle conditions. Here we report the results of constant strain-rate and stress-relaxation experiments on garnets in the pyrope–majorite solid solution which constrain the strength of majoritic containing garnets relative to pyrope as a function of majorite content and temperature. We find that at temperatures below 650 °°C both pure pyrope and majoritic garnets have the same strength. Conversely, above 650 °°C we find that majoritic garnets are initially stronger than pure pyrope but weaken with increasing temperature and majorite content and with significant majorite contents are weaker than pyrope above approximately 800 °°C. We develop a flow law for the entire pyrope–majorite solid solution as a function of temperature and majorite content.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics of the Earth and Planetary Interiors - Volume 179, Issues 1–2, March 2010, Pages 87–95
نویسندگان
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