کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4727982 1640153 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Komatiites from west Shandong, North China craton: Implications for plume tectonics
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Komatiites from west Shandong, North China craton: Implications for plume tectonics
چکیده انگلیسی

The Mengyin komatiites are located at the base of the Taishan Complex (∼ 2.7 Ga), in the western Shandong greenstone belt of the eastern block of North China craton. The Mengyin komatiites have high-magnesian, low-titanium, and aluminum-undepleted chemical characteristics. Although the ultramafic rocks underwent amphibolite to greenschist facies metamorphism, they preserve remnant igneous spinifex textures. Some komatiite samples even preserve rare fresh olivine. According to the mass equilibrium between the olivine and melt, the potential eruption temperature of the Mengyin komatiites at 1 atm is about 1270 °C which might indicate a plume tectonic setting. It is inferred that komatiites in Mengyin, west Shandong may be part of a plume-related global magmatic event related to the break-up of a supercontinent that included the eastern block of the North China craton.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gondwana Research - Volume 12, Issues 1–2, August 2007, Pages 77–83
نویسندگان
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