Figure 2
From: Nitrogen recycling at the Costa Rican subduction zone: The role of incoming plate structure
Ternary plot of N2-Ar-He abundances. Relative abundances of N2, Ar, and He in the forearc and arc front springs samples are used to show mixing relationships among the mantle, arc gases, air, and air saturated water (ASW). The forearc springs plot closer to the air-ASW components than the arc front springs which likely have either the mantle of arc gas end-members.
