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10,000 year » 10,000 years, 150,000 years, 20,000 years
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by Thorson, Thor, McGrath, Chad, Moberg, Dean, Fillmore, Matthew
Published 2022
“... event in Oregon was the deposition of Mazama ash 7,700 years by the explosion of Mt. Mazama. Oregon has...”Published 2022
Springer International Publishing
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