Primitive arc magma diversity: New geochemical insights in the Cascade Arc

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• 作者：E.K. Mullen ; ^{e.mullen@opgc.univ-bpclermont.fr} ; D. Weis ; N.B. Marsh¹ ; M. Martindale
• 关键词：Arc basalt ; Cascade Arc ; Trace elements ; Sr-Hf-Nd-Pb isotopes
• 刊名：Chemical Geology
• 出版年：2017
• 出版时间：5 January 2017
• 年：2017
• 卷：448
• 期：Complete
• 页码：43-70
• 全文大小：2144 K
• 卷排序：448

文摘

High-precision geochemical data for 53 Cascade Arc primitive magmas Calc-alkaline & tholeiitic groups (CABs, HAOTs) define common isotopic trends Isotopic end-members are MORB-type depleted background mantle and subducting sediment Additional oceanic crust input in CABs Intraplate basalts (Garibaldi Belt, Adams-Simcoe) tap isotopically distinct enriched mantle