Texas
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
