Texas

 

Geological State Symbols Across America  Geology of the National Parks Through Pictures

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Texas State Geological Symbols
Type
Symbol
Year Est.
State Stone
Petrified Palmwood
1969
State Gem
Texas Blue Topaz
1969
State Dinosaur
Paluxysaurus Jonesi
1997
State Precious Metal
Silver
2007

 

State Stone: Petrified Palmwood

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; North Dakota State Fossil: Teredo Petrified Wood; Washington State Gem: Petrified Wood

 

State Gem: Texas Blue Topaz

 


State Dinosaur: Paluxysaurus Jonesi

 


State Precious Metal: Silver


 

References

https://statesymbolsusa.org/states/united-states/texas


Geology of Texas's National Parks

Through Pictures

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

Alibates Flint Quarries National Monument

San Antonio Missions National Historical Park

 

National Parks visited but I have no pictures (at this time) to do a geology post

(link directs to NPS site)

Chamizal National Memorial (2004)

Lake Meredith National Recreation Area (2005)

Lyndon B. Johnson National Historical Park (2005)

 


Alibates Flint Quarries National Monument

Visited in 2005

 

 


San Antonio Missions National Historical Park

Visited in 2005