Last Layers of Terrestrial Magma Ocean Solidification • Magma ocean solidifies from the bottom up • Last 0.3% of mantle not solidified by model • Leftover “exotic” mix of oxides in melt – CaO (50%), FeO (27%), Al 2 O 3 (20%), SiO 2 (3%), MgO (1%) – Enriched in Nd, Sm, U, Th too! • What happens to the leftover material? A. Springmann, 12.470, May 14 2009
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Last Layers of Terrestrial Magma Ocean Solidification
Last Layers of Terrestrial Magma Ocean Solidification. Magma ocean solidifies from the bottom up Last 0.3% of mantle not solidified by model Leftover “exotic” mix of oxides in melt CaO (50%), FeO (27%), Al 2 O 3 (20%), SiO 2 (3%), MgO (1%) Enriched in Nd, Sm, U, Th too! - PowerPoint PPT Presentation
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Last Layers of Terrestrial Magma Ocean Solidification
• Magma ocean solidifies from the bottom up
• Last 0.3% of mantle not solidified by model
• Leftover “exotic” mix of oxides in melt
– CaO (50%), FeO (27%), Al2O3 (20%), SiO2
(3%), MgO (1%)
– Enriched in Nd, Sm, U, Th too!
• What happens to the leftover material?A. Springmann, 12.470, May 14 2009