Page 30 - The Restless Earth Fossils
P. 30
the tortuous road to Fossilhood 2
to stone. Scientists rarely use the term petrification anymore.
Instead, they speak of permineralization and replacement—
processes that result in the conversion of living tissues to minerals
This petrified tree trunk in Yellowstone National Park in Wyoming was
transformed into its current state by volcanic activity in the area.
RE_Fossils2print.indd 29 3/17/09 8:59:04 AM
