Dendrochronological analysis can be carried out on both waterlogged, dried and preserved wood.
Sapwood sits just under the bark and forms the outer approx. It can be seen as a lighter area along the outer edge and can be very soft.If growth rings are irregular, so cut a slice further along the timber if possible.It is best to take the dendro sample through the place where the bark or bark edge is preserved. 2 cm in thickness should be cut through the entire tree.For oak, look for sapwood and/or bark on the timber.If there is bark on the sampled timber the precise felling year can be determined.
Search for dendro dating:
If the wood is fragile, a thicker slice can be taken, so there is no danger of the material falling apart.