[Eva]

How do they date rock tools? These rocks look exactly like the ones we find on the shore here in WA state, that were mostly used to open clam shells and other basic subsistance work of the local Indians. The problem is that they were probably still using some of them in the early twentieth century.

[Fedora]

> How do they date rock tools?

This is a question I often wonder about also. My understanding is that rock tools themselves cannot be radiocarbon dated, dating estimates are based on other items/phenomena found in the vicinity of the tools, which may sometimes leave room for interpretation over whether the tool actually comes from the same date as the adjacent object. Anyone else who's done some research on this have more information?