Fig. 3: Example U-Pb isochrons from two speleothem samples from the Naracoorte Cave Complex.

a Stalagmite sample ALEX-11 from Alexandra cave. b Flowstone sample JQ-2 from James Quarry. See Supplementary Fig. 1 for all U-Pb isochrons.
a Stalagmite sample ALEX-11 from Alexandra cave. b Flowstone sample JQ-2 from James Quarry. See Supplementary Fig. 1 for all U-Pb isochrons.