The document discusses the petrified forest, which used to be an actual forest that lived over 200 million years ago. Due to geological forces, the trees in the forest became buried over time and their organic material was slowly replaced with minerals like quartz, forming fossils of the petrified wood that can be seen at the location today. The petrified forest national park covers an area of over 85,000 square miles and contains many examples of petrified wood and other fossils from the ancient forest.

1. Petrified forest
by Julio

2. How have geological forces contributed to the formation
of some of the most unique landscapes in the united
states

3. The trees lived her over 200 million years ago since the continents
moved to todays position.

4. Right here is some petrified wood

5. There used to be lots of trees! here


6. Here is the petrified forest’s location

7. This place used to be a forest

8. More petrified wood

9. More fossils

10. Oh my gosh!
Why don’t they look like normal trees that’s what
happens after a period of time they turn into fossils just
like dinosaur bones.

11. Good info!
Petrified wood is a fossil it forms when plant material is
buried by sediment.

12. Petrified forest
Did you know that petrified forest is more spectacular
than ever. The petrified forest has an area of 85,542
miles.

13. Petrified forest
How wood petrifies is structures such as tree rings and
the various tissues are often observed features.
petrified wood is a fossil in witch the organic remains
have been replaced by minerals in the slow process of
being replaced with stone. this petrification process
generally results in quarts chalcedony mineralization.

19. Websites
 http://en.wikipedia.org/wiki/Petrified_wood
 http://www.nps.gov/pefo/index.htm

20. 