Gourley and Nash 2013:33

Samples that cite this reference

Lab number Site Province / State Normalized age δ13C (per mil)
Beta-278065 42WS5277 (Washington Fault) 5150 ± 40 -18.1
Beta-278066 42WS5277 (Washington Fault) 4980 ± 40 -20.9
Beta-278067 42WS5277 (Washington Fault) 5400 ± 40 -12.5