The Petrogenesis of the Permian Podong Ultramafic Intrusion in the Tarim Craton, Western China: Constraints from C-He-Ne-Ar Isotopes

Figure 5

Plots of ³He/⁴He versus ⁴He contents (a) and ²⁰Ne/²²Ne versus ²¹Ne/²²Ne (b) in the Podong ultramafic intrusion, China. Olv: olivine; Pyx: pyroxene; Gbr: gabbro; OlGbr: olive gabbro; Pyt: pyroxenite; Plht: plagioclase lherzolite; ATM: atmosphere [29, 39]; MFL: the mass fractionation line [29, 39]; CC: continental crust [29]; Nucl.: nucleogenic; L-K: Loihi- Kilauea line [26]; MORB: mid-ocean ridge basalts [58].

(a)

(b)