Petrified wood is the name for a rare form of
fossilization in which wood or an entire tree has been turned completely into
stone.
This happens due to a process known as petrifaction, in which all the organic materials are being replaced with minerals, whilst the original structure of the wood is being retained.
petrified wood
petrified wood
A collection of this
fossilized wood can be observed at the
Northeastern Museum of Petrified Wood and Mineral
Resources, located in the
Isaan province of
Nakhon Ratchasima.