fig15.htm

Figure 15. Relationships between whole-rock abundances of parent and daughter species indicates mixing between isotopically-homogeneous trapped He and radiogenic in-situ produced He*.
Most samples are below the reference evolution line, therefore they have partially lost helium. Because of the bi-logarithmic scale of this plot, the initial 4He/3He ratio in trapped He can not be derived (see Figure 16).


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