Gallo was right when he talked about that compression would destroy the “rings.” I consider some relationship of ice cores is done through a O16/O14 ratio, however I am not sure. That ratio could additionally be good only to point the local weather at the time of snowfall. The age models making use of the alignment of Ti/Ca to speleothem isotopic records have been validated by comparing the radiocarbon-dated higher portion of the cores with the U-Th dated speleothem signal (Supplementary Fig. 3). This validation was the initial step that led to using speleothem isotopic information to complement the dating of the three cores from the Brazilian margin because it demonstrates that terrigenous input at these sites is coeval with the precipitation occasions recorded within the speleothems25.