کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8911563 | 1638617 | 2018 | 49 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase relations and melting of nominally 'dry' residual eclogites with variable CaO/Na2O from 3 to 5â¯GPa and 1250 to 1500â¯Â°C; implications for refertilisation of upwelling heterogeneous mantle
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In upwelling heterogenous mantle domains, the siliceous eclogitic melts formed within a body of eclogite will react with encapsulating mantle peridotite, effectively refertilising it and producing hybrid pyroxene- and garnet-rich rocks. Subsequent melting of these sources may lead to compositionaly diverse primitive mantle-derived magmas, with high Ca/Al and low Na/Ca signatures indicators of preferential melting of a heterogeneous mantle, previously refertilised by recycled Ca-rich oceanic crustal material, and primitive magmas with low Ca/Al and high Na/Ca derived from melting of mantle with a 'normal recycled crustal material signature'. Thus, compositional magma diversity may directly reflect precursor compositions of the mantle source region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Lithos - Volumes 314â315, August 2018, Pages 506-519
Journal: Lithos - Volumes 314â315, August 2018, Pages 506-519
نویسندگان
Anja Rosenthal, Gregory M. Yaxley, Wilson A. Crichton, István J. Kovács, Carl Spandler, Joerg Hermann, Judit K. Sándorné, Estelle Rose-Koga, Anne-Aziliz Pelleter,