3 ms·
That depends entirely on the species of tree. Absolutely crucial in this case. Do they mention this data in the article?
by pvaldes 5y ago
That depends entirely on the species of tree. Absolutely crucial in this case. Do they mention this data in the article?
- flyingfences 5y agoThe species is actually not absolutely crucial in this case. The trees were dated by looking for solar flare activity in the rings; the trees are known to have been cut by Vikings because they were cut with steel tools.
- roywiggins 5y agoYes, at least two species of tree. You can read which ones in the paper!