Ridge et al. (2001) Geological Society of America Special Paper 351 : 171-189 // Ridge et al. (2012) American Journal of Science, v. 312, 685–722 per Dalton et al. 2020-An Updated Radiocarbon-Based Ice Margin….

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
GX-25735 12660 ± 50 -28.9
GX-26456 11220 ± 50 -27.1