Dating of speleothems
The age distribution of the speleothem samples reveals that speleothem growth ceased, or was considerably diminished, between 200 and 120 ka ago, a time corresponding to the penultimate glaciation (Oxygen-isotope Stage 6).
“[C]osmogenic nuclides of 10Be and 26Al trapped in quartz grains record the time of burial of the crystals and can thus be used to date clastic cave sediments…
Ages obtained range from 30 to 135 ky with a hiatus between 50 and 80 ky BP.
Changes in uranium isotopes activity ratios indicate a change in climatic conditions.
, (ed.) Late Cainozoic palaeoclimates of the Southern Hemisphere: proceedings of an International Symposium held by the South African Society for Quaternary Research, Swaziland, 29 august - 2 september 1983.
U-series dating method is applied to speleothems from Los Covachos Cave in the south of Spain.