Constraining the source of mantle plumes
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- 作者：N. Cagneya ; neil.cagney.11@ucl.ac.uk" class="auth_mail" title="E-mail the corresponding author ; F. Crameria ; W.H. Newsomeb ; C. Lithgow-Bertellonia ; A. Cotelc ; S.R. Hartd ; J.A. Whiteheade
- 关键词：mantle plumes ; mantle convection ; geodynamics ; ocean island basalts ; geochemistry
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 February 2016
- 年：2016
- 卷：435
- 期：Complete
- 页码：55-63
- 全文大小：2315 K
文摘
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We study the dynamics of an isolated plume experimentally and numerically.
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We provide an objective definition of plume geometry.
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Plume source region is predicted for range of Rayleigh number and viscosity contrast.
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Plume composition predicted for range of Rayleigh number and viscosity contrast.
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90% of material in mantle plumes derived from lowermost 260-750 km in mantle.