| Concluding |
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| " | Plate motion
indicates that there is convection in |
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| the Earth mantle |
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| " | Estimates of the
parameters reveals that convection |
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| in the Earth
mantle is vigorous |
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| " | But material
parameters are poorly constrained and |
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| also functions of
P,T |
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| " | By understanding
the connection to geochemical |
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| observations the
parameters could be much better |
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| constrained |
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