کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6482025 1413928 2017 10 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
The behavior of rare-earth elements, zirconium and hafnium during magma evolution and their application in determining mineralized magmatic suites in subduction zones: Constraints from the Cenozoic belts of Iran
ترجمه فارسی عنوان
رفتار عناصر کمیاب خاکی، زیرکونیم و هافنیوم در طی تکامل ماگما و کاربرد آنها در تعیین سوئیتهای ماگمایی معدنی در مناطق فرورانش: محدودیت های کمربندهای سنوزوئیک ایران
کلمات کلیدی
ژئوشیمی عناصر کمیاب؛ تکامل مگا؛ سوئیتهای مغناطیسی معدنی؛ منطقه فرونشانی؛ ایران؛
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی


- Geochemical variations of trace elements (REE, Zr, Hf) have been attributed to subduction processes and arc maturity.
- Chondrite normalized REE pattern, Zr-Hf and (Zr/Hf)-Hf scatter plots can be used as a tool to recognize the fertile and/or mineralized magmatic suites in magmatic arcs.
- The geochemistry of trace elements have been attributed to:- Subduction processes- Arc maturity- Recognition of mineralized bodies

Processes, such as partial melting, differentiation, assimilation, magma mixing, and liquid immiscibility, together with partition coefficients between minerals and melt, solubility, and redox conditions, are the controlling parameters for element distribution and enrichment processes. These factors can be evaluated through the geochemical variation of trace elements, such as Rare Earth Elements (REEs) and High Field Strength Elements (HFSEs), specifically Zirconium (Zr) and Hafnium (Hf), in magmatic rocks. For this purpose, two well-mineralized Cenozoic subduction-related magmatic belts in Iran-the Arasbaran and the Urumieh-Dokhtar-were evaluated. The results of this study showed that, in subduction zones, the increase in crust thickness with arc maturity caused low partial melting and more differentiation, which left behind magmas with low Zr, Hf and HREEs. These factors can be used to evaluate the degree of differentiation, degree of partial melting, and the correlation of different magma pulses, from initiation to the end of the subduction processes. Using Zr-Hf or Hf-(Zr/Hf) diagrams, we concluded that low Zr and Hf contents with low Zr/Hf ratios without a Europium (Eu) negative anomaly, and with high LREE/HREE ratios, indicated the more evolved and mineralized magmatic suites, which occurred particularly in the mature arcs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ore Geology Reviews - Volume 81, Part 1, March 2017, Pages 270-279
نویسندگان
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