Fig. 3: Modelled concentration of 40Ar* from in situ production and release over 20,000 years within the CPRA. | Nature Geoscience

Fig. 3: Modelled concentration of 40Ar* from in situ production and release over 20,000 years within the CPRA.

From: Passive degassing of lithospheric volatiles recorded in shallow young groundwater

Fig. 3

40Ar* concentrations are modelled for varying release factors (0–1) and porosities (0.08–0.3 (ref. 35)). White lines and numbers represent the contours of 40Ar* concentration (× 10−8 cm3STP gw−1) output from the model. Expected 40Ar* concentration is calculated following the methods in ref. 35. The maximum concentration of 40Ar* produced in situ is ~5.5 × 10−8 cm3STP gw−1.

Source data

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