Fig. 9.From: Single grain noble gas analysis of Antarctic micrometeorites by stepwise heating method with a newly constructed miniature furnace40Ar/36Ar versus 38Ar/36Ar for seven snow-AMMs. SW (38Ar/36Ar = 0.183; Heber et al., 2009), Q (0.187; Busemann et al., 2000), Earth’s atmosphere (38Ar/36Ar = 0.188 and 40Ar/36Ar = 296; Nier, 1950) and cosmogenic Ar (38Ar/36Ar ≈ 1.55; e.g. Eugster et al., 1993) are shown. Errors are 1σ.Back to article page