کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5782749 | 1637519 | 2017 | 52 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Geochemistry of lavas from the Caroline hotspot, Micronesia: Evidence for primitive and recycled components in the mantle sources of lavas with moderately elevated 3He/4He
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Geochemistry of lavas from the Caroline hotspot, Micronesia: Evidence for primitive and recycled components in the mantle sources of lavas with moderately elevated 3He/4He Geochemistry of lavas from the Caroline hotspot, Micronesia: Evidence for primitive and recycled components in the mantle sources of lavas with moderately elevated 3He/4He](/preview/png/5782749.png)
چکیده انگلیسی
Lavas with moderately elevated 3He/4He (up to 12.8 Ra) from Kosrae, as well as lavas from other high-3He/4He localities globally, exhibit evidence for a recycled oceanic crust signature, including elevated Ti concentrations and moderately radiogenic Pb isotopic compositions. This observation suggests that primitive high-3He/4He and recycled reservoirs are intimately associated, and mix, in the deep mantle sources of plumes. Hybrid mantle domains generated in this way serve as the melt source for lavas with elevated 3He/4He from many hotspot localities. Thus, the geochemistry of much of the mantle, including the high-3He/4He domain, may be modified by the addition of subducted materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Geology - Volume 455, 20 April 2017, Pages 385-400
Journal: Chemical Geology - Volume 455, 20 April 2017, Pages 385-400
نویسندگان
M.G. Jackson, A.A. Price, J. Blichert-Toft, M.D. Kurz, A.A. Reinhard,