♨️ Travertine Terraces: Hot-Spring CO2 Degassing, Calcite Deposition and Growing Rimstone Dams

A chain of eight rimstone pools on a hillside: hot CO2-rich spring water degasses, becomes supersaturated and deposits calcite on the lip of each dam, so the staircase builds itself. Quasi-steady pool chemistry, thin-film degassing, dam growth over years and six in-page numerical checks.