North Dakota

 

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North Dakota State Geological Symbols
Type
Symbol
Year Est.
State Fossil
Teredo Petrified Wood
1967

 

State Fossil: Teredo Petrified Wood

Petrified wood is not actual wood, however it was wood at one point. Petrified wood is a fossil that formed from pieces of wood that have been mineralized. Mineralization is a process where groundwater moves through the wood and replaces all of the wood molecules with molecules of other substances, most often silica (i.e. quartz). This means that petrified wood actually isn't wood anymore, but a fossil of the former wood.

 

Related: Arizona State Fossil - Petrified Wood (Araucarioxylon arizonicum); Louisiana State Fossil: Petrified Palmwood; Mississippi State Stone: Petrified Wood; Texas State Stone: Petrified Palmwood; Washington State Gem: Petrified Wood

 

References

https://statesymbolsusa.org/states/united-states/north-dakota


Geology of North Dakota's National Parks

Through Pictures

(at least the one's I have been to)