Quantifying lithological variability in the mantle
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- 作者：Oliver Shorttlea ; os258@cam.ac.uk" class="auth_mail ; John Maclennana ; jcm1004@cam.ac.uk" class="auth_mail ; Sarah Lambartb ; saral@ldeo.columbia.edu" class="auth_mail
- 关键词：mantle heterogeneity ; pyroxenite ; mantle plume ; Iceland ; plume buoyancy ; refractory harzburgite
- 刊名：Earth and Planetary Science Letters
- 出版年：1 June 2014
- 年：2014
- 卷：395
- 期：Complete
- 页码：24-40
- 全文大小：2761 K
文摘
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A new method to estimate the amount of recycled material in the MORB source region.
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The Icelandic mantle contains at least 5% recycled basalt.
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Mantle potential temperature beneath Iceland is constrained to be >1460 °C.
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Refractory domains are needed to match the volume and chemistry of Icelandic melts.
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Refractory mantle heterogeneity may be critical for the buoyancy of mantle plumes.