If you’re on the hunt for chert, Texas is like hitting the jackpot! Our vast lands are dotted with spots where you can find this fascinating rock, often in beautiful, natural settings that make the search an adventure all on its own.

Georgetown flint is the name given to an unusually good chert variety that occurs along the eastern fringe of the Edwards Plateau. Modern flintknappers “discovered” a massive, newly exposed source of this world-class material in the early 1970s – the Texas Crushed Stone Quarry south of Georgetown, Texas.

2024年12月22日 · Texas is almost a goldmine of incredible rocks, minerals, and gemstones. From stunning blue topaz, our official state gem, to the ancient, fiery opals that can catch the light just right, there’s something magical about unearthing a piece of Texas’ geological history.

The best rockhounding locations in Texas are the gravel beds of the Rio Grande, the area around Big Bend, Mason County in central Texas, and a wide stretch of land stretching from south Texas to the Louisiana border. North Texas and the panhandle are relatively devoid of good rockhounding sites.

Heat treating definitely makes the Texas flint and chert more brittle and brings out an attractive satin surface on flake scars. My experimentation found that a considerable variation in temperature is needed for treating the various types of flint and chert I collected.

Texas Arrowhead Identification Guide. Projectile Points of Texas Toolstone / Lithics of Texas Complete Alphabetical Listing. Search ... Chert, Quartzite, Argillite, Rhyolite, Obsidian, ect. Other Shaped Lithics Other Shaped Lithics. Lanceolate Projectile Points Auriculate, Lanceolate, Ovoid, and Triangular Points

2024年6月17日 · The Texas Panhandle has a relatively low seismic hazard. The USGS 2014 Seismic Hazard Map indicates that the Alibates area has a 2% chance that an earthquake peak ground acceleration of between 10 and 14 %g (percent of gravity) being exceeded in 50 years due to natural earthquakes.

Biface caching is an intriguing prehistoric pattern on the South Texas Plains. Such caches consist of purposefully hidden ("cached," usually buried) groups of large, well-made, percussion-shaped, symmetrical bifaces. Cache bifaces typically have no evidence of use, resharpening, notching or other evidence of specific function. Most are well ...

Chert, or flint, was a rock used to make tools and weapons. Composed of tiny crystals of quartz, chert nodules are found in the limestone formations around Waco Lake. Once the nodules were exposed through erosion, Native Americans collected them to make tools.

El Sauz is a distinct type of chert, unique to Starr County. It was first described in the 1970s after archeologists noted projectile points made from a rock with unusual colorations and textures.