Table 3. Summary of sample information, carbon-14 ages, and calibrated ages of holotype specimen and referred material from Diamond Valley Lake.
| Sample # | WSC # | AMS # | Material dated | Treatment1 | 14C age (ka BP) | Age (cal ka BP)2 | p4 |
|---|---|---|---|---|---|---|---|
| East Dam | |||||||
| 97SK6-27.1 | 9622 | USGS-1039 | Charcoal | ABA | 43.6 ± 3.2 | >46.53 | |
| 97SK6-27.1 | 9622 | USGS-1070 | Plant fibers | ABA | >42.6 | >45.83 | 1.00 |
| 97SK6-27.1xx | 9622 | USGS-1081 | Eggshell (carbonate) | HCl | >44.8 | >48.13 | 1.00 |
| 98NB1-27.7 | 8932 | USGS-1195 | Succineidae shell | HCl | 33.55 ± 0.76 | 37.8 ± 1.8 | 1.00 |
| West Dam | |||||||
| 95Q10-16.1 | 18743 | CAMS-28300 | Charcoal | ABA | 13.44 ± 0.06 | 16.17 ± 0.22 | 1.00 |
| 95Q10-16.1 | 18743 | CAMS-31081 | Charcoal | ABA | 13.52 ± 0.06 | 16.30 ± 0.23 | 1.00 |
| 95Q10-16.1 | 18743 | CAMS-27967 | Charcoal | ABA | 13.20 ± 0.05 | 15.87 ± 0.19 | 1.00 |
| 95Q10-16.1 | 18743 | CAMS-28301 | Charcoal | ABA | 13.43 ± 0.05 | 16.15 ± 0.19 | 1.00 |
| 95Q10-16.1 (−2726) | 18743 | USGS-1193 | Charcoal | ABA | 13.88 ± 0.07 | 16.79 ± 0.28 | 1.00 |
| 95Q10-16.1 (−2737) | 18743 | USGS-1194 | Charcoal | ABA | 13.28 ± 0.07 | 15.97 ± 0.23 | 1.00 |
Notes:
Uncertainties for the calibrated ages are given at the 2σ (95%) confidence level. All other uncertainties are given at 1σ (68%).
ABA, acid-base-acid; HCl, acid leach.
Calibrated ages were calculated using CALIB v.7.1html, IntCal13.14C dataset; limit 50.0 calendar ka B.P. Calibrated ages are reported as the midpoint of the calibrated range. Uncertainties are calculated as the difference between the midpoint and either the upper or lower limit of the calibrated age range, whichever is greater (reported at the 95% confidence level; 2s). Multiple ages are reported when the probability of a calibrated age range exceeds 0.05.
Sample 14C age or sample 14C age plus uncertainty is beyond the limit of the IntCal13 dataset and therefore, cannot be calibrated (Reimer et al., 2013).
p, probability of the calibrated age falling within the reported range as calculated by CALIB.