کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4723726 | 1355543 | 2010 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Vetreny Poyas (Windy Belt) subprovince of southeastern Fennoscandia: An essential component of the ca. 2.5-2.4Â Ga Sumian large igneous provinces
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
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چکیده انگلیسی
Negative or near-zero ÉNd values for intrusive rocks from the Ruiga massif (â2.0 ± 0.8) and volcanics from Golets Hill (â0.4 ± 0.9) suggest that the mantle source for their melts was enriched or that their parental magmas were contaminated by crustal rocks during intrusion and crystallization. Overall, the petrologic-geochemical study of rocks from the above-mentioned complexes indicates that they were all derived from the same parental primary komatiitic melt (associated with a mantle plume) that experienced crustal contamination. This parental magma for the province is a komatiitic basalt magma type with key petrochemical parameters (9-18% MgO, 0.5-1.0% TiO2, SiO2 <53%), and is contrasted with other high-Mg magmatic types, boninites, komatiites, picrites and meimechites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precambrian Research - Volume 183, Issue 3, 1 December 2010, Pages 589-601
Journal: Precambrian Research - Volume 183, Issue 3, 1 December 2010, Pages 589-601
نویسندگان
V.S. Kulikov, Ya.V. Bychkova, V.V. Kulikova, R. Ernst,