| 31. | It last erupted in about 350 BCE based on radiocarbon dating.
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| 32. | A single radiocarbon date for Harwood suggests it was also occupied in 1450.
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| 33. | He believes Koutsentsov's theory that the radiocarbon dating done in 1988 was skewed.
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| 34. | These have been used to radiocarbon date the time of settlement.
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| 35. | A detailed analysis using radiocarbon dating techniques was published in 2007.
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| 36. | Radiocarbon dating evidences human presence dating back 50, 000 years.
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| 37. | Radiocarbon dating of the artifacts place them between AD 200-700.
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| 38. | No organic material was found, so radiocarbon dating was impossible.
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| 39. | Radiocarbon dating did not exist at the time of excavation.
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| 40. | Some scholars believe the radiocarbon dates to be completely wrong.
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