Evidence against an ancient non-chondritic mantle source for North Atlantic Igneous Province lavas
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- 作者：James M.D. Day jmdday@ucsd.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Oxygen ; Helium ; Lead ; Continental flood basalts ; North Atlantic ; Contamination ; Primitive mantle
- 刊名：Chemical Geology
- 出版年：2016
- 出版时间：15 November 2016
- 年：2016
- 卷：440
- 期：Complete
- 页码：91-100
- 全文大小：1367 K
文摘
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Pervasive crustal contamination of North Atlantic Igneous Province melts
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Tracking of primitive sources complicated by He isotope decoupling from lithophile isotopes
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Crustal assimilation yields trends similar to those expected for an ancient non-chondritic source
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Isotopic variability reflects recycled mantle heterogeneities and crustal contamination