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United States / MI / Houghton County / 20HO-? (Calumet Ancient Pit)
Samples
| Lab number | Site | Province / State | Normalized age | δ13C (per mil) |
|---|---|---|---|---|
| M-1776 | 20HO-? (Calumet Ancient Pit) | MI | 1280 ± 140 | -25.0 |