Neon isotopes solar signature

Neon isotope data from Samoan lavas show elevated e/ Ne relative to atmosphere. The data are not consistent with a model of mixing between a degassed MORE mantle with high e/ Ne and a deeper, undegassed plume source with atmospheric ONe/ Ne. The similarity of neon isotopes between the Samoan plume-Uke source and MORE supports the idea that neon isotopes in the mantle as a whole more closely resemble the solar composition than that of the atmosphere (see Chapter 2.06). Plume-like neon isotopic signatures have been identified in an apatite from a southeastern Australian spinel Iherzolite xenolith (Matsumoto et al, 1997). 

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