Critical zone processes limit alkalinity export from natural basaltic systems.

Enhanced weathering (EW) of rocks is a proposed strategy for carbon dioxide removal (CDR) that relies on the dissolution of silicate minerals, typically basalt, applied to soils 1 .

Enhanced weathering (EW) of rocks is a proposed strategy for carbon dioxide removal (CDR) that relies on the dissolution of silicate minerals, typically basalt, applied to soils 1 . Globally, large-scale CDR by means of EW requires the generation of alkalinity during mineral…