کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451146 | 1307372 | 2005 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Geochemical characteristics of the niobium-rich arfvedsonite granites, Younger Granites province of Nigeria
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Geochemical characteristics of the niobium-rich arfvedsonite granites, Younger Granites province of Nigeria Geochemical characteristics of the niobium-rich arfvedsonite granites, Younger Granites province of Nigeria](/preview/png/9451146.png)
چکیده انگلیسی
The REE fractionation patterns in all three arfvedsonite granite varieties are characterized by enrichment of both the light (La-Sm) and heavy (Gd-Lu) rare earth elements and a significant negative Eu anomaly. The albite arfvedsonite granite is, however, preferentially more enriched in the heavy REE relative to the aegirine arfvedsonite and the arfvedsonite granites. A plot of the âREE against Na2O and niobium reveals positive correlation in the arfvedsonite granites. There is also a linear relationship and strongly positive correlation between Nb and Na2O because the pyrochlore is most abundant in the most extensively albitized variety of the arfvedsonite granites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemie der Erde - Geochemistry - Volume 65, Issue 3, 20 July 2005, Pages 279-296
Journal: Chemie der Erde - Geochemistry - Volume 65, Issue 3, 20 July 2005, Pages 279-296
نویسندگان
P.O. Ogunleye, E.C. Ike, I. Garba,