Assertion: noble gas | /r/HasSubevent | fractionation
Facets:
Source sentences:
text: One possible scenario for the formation of this excess air is as follows: the water table rises, quickly trapping air bubbles in the groundwater; the air bubbles partially dissolve in the water (with the heavier noble gases partially dissolving first, leading to fractionation); the gas slowly exchanges with the atmosphere (re-equilibration) until new recharge seals off the exchange (Stute and Schlosser 2000).