obsidian dating造句
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- Among his methodological contributions, Green was well known for his work on obsidian dating and provenance, an invaluable tool in Pacific archaeology.
- The water vapor creates a " hydration rind " in the obsidian, and so this approach is known as " hydration dating " or " obsidian dating ", and is useful for determining dates as far back as 200, 000 years.
- It's difficult to see obsidian dating in a sentence. 用obsidian dating造句挺难的
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