Stable isotope data from cave water from Cueva Llanio, Cantabria, Northern Spain and global speleothem calcite phosphate oxygen isotope data

Cave drip water, pool water and PO4 (phosphate) dosing experiments from Cueva Llanio, Cantabria, N. Spain and cave speleothem carbonate from global cave systems. The data set includes stable oxygen and hydrogen isotope data from the cave drip waters, cave water temperatures and the results of phosphate dosing experiments. Phosphate oxygen isotope data is presented from the dosing experiments, direct extractions from the cave water and from a number of speleothem calcite samples from global collaborators. Water samples were collected from Cueva Llanio over 3 field trips 2023-24.