
Figure 30.
143 Nd/
144 Nd-
87 Sr/
86 Sr for compositions of the volcanics studied: UM, depleted upper
mantle; PHEM, primordial helium-enriched mantle; BSE, homogeneous chondrite reservoir.
Lava fields from mantle plumes of the Afar Triangle and Hawaii are shown. The rest of notation
is the same as in Figure 22.
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