کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8912851 | 1639877 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mesozoic alkaline plutonism: Evidence for extensional phase in Alpine-Himalayan orogenic belt in Central Alborz, north Iran
ترجمه فارسی عنوان
پلوتونیسم قلیایی مزوزوئیک: شواهدی برای فاز تجاری در کمربند ارتوپندی آلپی هیمالایان در البرز مرکزی شمال ایران
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
The Kamarbon Jurassic alkaline basic intrusion crops out in Central Alborz, north Iran, along the northern margin of the Alpine-Himalayan belt. The intrusion includes foid gabbros at the margins and foid monzodiorites towards the center. The foid monzodiorites are considered as the evolved melts after the fractional crystallization mostly of olivine and clinopyroxene from a foid gabbro parental magma. Based on mass balance calculation the evolution of the Kamarbon alkaline gabbro could be explained by 19.2% fractionation of clinopyroxene, 13.8% of olivine, 3% of plagioclase and 1.0% Ti-Magnetite, with 63% of residual liquid. REE inversion modeling indicates that the Kamarbon intrusion magma was generated by low degrees (<3%) of partial melting from a garnet-bearing mantle source. In primitive mantle-normalized incompatible element diagrams, the Kamarbon rocks show enrichment in LILE elements (Ba, Rb, Sr and Th), HFSE elements (Nb, Ta, Ti, Zr and Hf) and P and depletion in K, Y and HREE (Yb, Lu) which are similar to patterns of HIMU-OIBs or intraplate alkaline magmas. According to the existence of extensional phases and occurrence of different rifting during late Triassic to middle Jurassic in Central Alborz, the formation of Kamarbon intrusion could be related to an intracontinental rifting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid Earth Sciences - Volume 2, Issue 4, December 2017, Pages 91-108
Journal: Solid Earth Sciences - Volume 2, Issue 4, December 2017, Pages 91-108
نویسندگان
Roghieh Doroozi, Carmela Vaccaro, Fariborz Masoudi,