Edwards Plateau Chert
Variations include: 1604 Chert, Brushy Creek Chert, Fort Hood Chert, Georgetown Chert, Heiner Lake Chert, Owl Creek Chert, Pedernales River Chert, Root Beet Chert









Natural Form:



Description of Physical Characteristics:

Color:  Edwards Chert ranges in color from most commonly light gray to dark brown or a medium gray to blue.  Light gray material commonly has numerous short linear fossil inclusions with a white or cream colored cortex.

Texture:  Fine grain

Luster: Waxy

Translucency:  Opaque

Silica Fabrics / Fossils: Spicules and sponges

Patina:

Heat Treatment: 

Knapping:
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Edwards Chert is associated with the Edwards Limestone Formation found throughout the Edwards Plateau of central Texas.  Primary occurring as nodules (up to 40 cm) and lenses, discontinuously within the limestone formation across the Callahan Divide and Edwards Plateau of central Texas including the Bosque Basin.

 

Projectile point made from this material:



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Commonly made projectile point from this material:
Archaeological Context: