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A comment on Younger Dryas cosmic impact of 12,800 years ago (2018). Parent comment

Re:Younger Dryas cosmic impact of 12,800 years ago (2018) by AlotOfReading on Thursday June 16, 2022 @10:52PM (#31773652)
OSL can read both younger and older than the true age, depending on the error sources. Modern labs will usually apply a correction to deal with underestimation as well.
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Re:Younger Dryas cosmic impact of 12,800 years ago (2018) by ncmncm on Saturday June 18, 2022 @01:40AM (#31787498)
Maybe explain how OSL can establish an upper bound on age? It looks impossible to me, except where you can prove the sample was undisturbed.
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