Why do the petrified logs look like someone cut them with a saw?
Petrified wood is mostly silica—quartz. The logs are very hard (7.8 on the 1-10 Moh scale!), but brittle. During stress after petrification, but while the logs were still encased in matrix rock, the logs cracked. As the logs eroded out, from gravity and ice wedging, the cracks widened and segments separated. Silica naturally breaks on a clean angle.
Related Questions
- What are other features that I should look for on a circular saw? How easy it is to see where the blade is cutting, is it easy to change the blade, will it cut bevels, can you use a vacuum attachment and can you attach a rib fence guide?
- Does the chain of the Saber Cut Saw require any special maintenance?
- What types of materials can the VentMaster saw cut through?
