Radiocarbon dating problem solving

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This activity was selected for the On the Cutting Edge Exemplary Teaching Collection Resources in this top level collection a) must have scored Exemplary or Very Good in all five review categories, and must also rate as “Exemplary” in at least three of the five categories.

One problem is that potassium is also highly mobile and may move into older rocks.

This method for rock dating is based on the decay of potassium-40 into argon: until the rock solidifies, argon can escape, so it can in theory date the formation of rock.Carbon dating works on organic matter, all of which contains carbon.However it is less useful for dating metal or other inorganic objects.This leaves out important information which would tell you how precise is the dating result.Carbon-14 dating has an interesting limitation in that the ratio of regular carbon to carbon-14 in the air is not constant and therefore any date must be calibrated using dendrochronology.

Through analysis, a bone fragment is determined to contain 13% of its original carbon-14.