Another deposit is called “travertine;” it’s calcium carbonate, CaCO3. Travertine is deposited at both?

moderate temperature warm springs and boiling springs, but many boiling springs do not deposit travertine. Could travertine deposition be because HCO3- is converted to CO2 and CO3-2 with a corresponding increase in pH in hot water?|||IT IS CaCo3... it forms in hot spring only... wont form anywhere else.