Tree Rings from a Ponderosa Pine
![Tree rings from a ponderosa pine, with dates showing some rings were formed in 1573 and 1598.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Cross%20section%20of%20a%20Ponderosa%20Pine%20with%20Labels.jpg?itok=08Tv_hMX)
Detailed Description
Tree rings from a Ponderosa pine in the Jemez Mountains, New Mexico. The pattern of wide and narrow rings is used to “crossdate” the tree rings to the exact years they were formed, in this case the years 1573 to 1598. The blue circles indicate decades and the two black circles indicate a micro ring in 1579.
Sources/Usage
Public Domain.