Crab Orchard Banded Chert
 AKA: Gray Banded, Jelly Roll, Kentucky Stromatoporoid chert










Natural Form:



Description of Physical Characteristics:

Color: Crab Orchard Chert is a banded gray and white.  It has broad alternating bands of light to dark whites and grays followed by darker grays to almost black.

Texture:  Porcellaneous

Luster: Waxy

Silica Fabrics / Fossils: Occasionally sponge spicules and fragmentary invertebrates fossil hash

Patina:

Heat Treatment: 

Knapping:  Fair to good
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Crab Orchard Chert is associated with the Crab Orchard Member of the Tyrone group.  Primarily found in north central Kentucky centered around Garrard County.  Distribution extends into Frentress County, Tennessee.  Has been reported into southwestern Illinois, Alexander County.

 

Projectile point made from this material:



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References: (See Reference Page, Entry Number):

Similar Material:
Commonly made projectile point from this material:
Dalton, Thebes

Archaeological Context:
It was primarily used during the Early Archaic period with slight utilization in the Late Archaic and rarely in the Middle Woodland period.