SHRIMP U-Pb and U-Pb Laser Ablation Geochronological on Zircons from Monte Santo Alkaline Intrusive Suite, Westhern Araguaia Belt, Tocantins State, Brazil
نویسندگان
چکیده
منابع مشابه
Geochemistry and Petrography of Alkaline rocks from Monte Santo Alkaline Intrusive Suite, Western Araguaia Belt, Tocantins State, Brazil
The Monte Santo Alkaline Intrusive Suite (MSAIS) is an association syenite foid, nepheline syenite and syenite. The MSAIS rocks are intruded in metapelites of the Rio do Coco meta-volcanic-sedimentary Sequence and are abundant pegmathoid veins cutting all of them. The mineral paragenesis is represented by aegirina, arfvedsonite, albite and nepheline, crystallized during the initial phase of cry...
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Geochronology and thermochronology on detrital material provides unique constraints on sedimentary provenance, depositional ages, and orogenic evolution of source terrains. In this paper we describe a method and case-studies of measurement of both U/Pb and (U-Th)/He ages on single crystals of zircon that improves the robustness of constraints in each of these areas by establishing both formatio...
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Department of Earth and Environmental Sciences, The Open University, Milton Keynes, MK7 6AA, U.K. 2 Department of Mineralogy, The Natural History Museum, London, SW7 5BD, U.K. 3 Department of Earth & Planetary Systems Science, Hiroshima University, 1-3-1 Kagamiyama, HigashiHiroshima 739-8526, Japan Department of Geology, Banaras Hindu University, Varanasi, 221005, India 5 Post Graduate Departme...
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تودههای مطالعه شده در پهنه البرز باختری و زیر پهنه طارم قرار دارند. بیشتر رخنمونهای تودههای مورد مطالعه ترکیب مونزونیت و کوارتزمونزونیت دارند و درون نهشتههای آتشفشانی- رسوبی ائوسن نفوذ کردهاند. این تودهها ماهیت شوشونیتی و متاآلومین دارند. بر پایه مطالعات ژئوشیمیایی، تودههای مورد مطالعه از یک ماگمای غیر اولیه حاصل شدهاند که در شرایط پوسته قارهای دچار تفریق و تحول شده است. در نمودارهای ع...
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The chemistry and isotope chemistry of natural materials is highly indicative of provenance and process throughout geological history. Our studies range in time from the earliest solar system through to processes that are actively taking place today, and in scope from planetary systems to individual molecules. Active areas of research centre on planetary studies, metamorphic and igneous geochem...
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ژورنال
عنوان ژورنال: Journal of Geoscience and Environment Protection
سال: 2014
ISSN: 2327-4336,2327-4344
DOI: 10.4236/gep.2014.23022