Radioactive dating rocks and fossils Ragan free webcam sex chat
This technique is, however, useful for providing relative dates for objects found at the same site.
Instead, other methods are used to work out a fossil’s age.
These include radiometric dating of volcanic layers above or below the fossils or by comparisons to similar rocks and fossils of known ages.
This damage is in the form of tiny marks called fission tracks.
When volcanic rocks and minerals are formed, they do not contain fission tracks.
Fossils and other objects that accumulate between these eruptions lie between two different layers of volcanic ash and rock.