Sassaman (1997) "Refining Soapstone Vessel Shronology in the Southeast" Early Georgia 25:1

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
Beta-92523 9DW77 3610 ± 60 -25.9
Beta-93458 9RO20 3410 ± 80 -26.3