Northwest European palaeoclimate as indicated by growth frequency variations of secondary calcite deposits

A compilationn for the northwest of Europe of over 500 uranium-series speleothen and travertine dates is presented using a cumulative distributed error frequency approach. These secondary carbonate deposits require both significant groundwater supply and a biogenic soil carbon dioxide source for their growth. During glacial periods soil CO2 production is inhibited and the water supply is ice locked, therefore growth is slowed significantly if …