Gettysburg Siltstone
 AKA: Hammer Creek Siltstone










Natural Form:



Description of Physical Characteristics:

Color: Gettysburg Siltstone ranges from a reddish brown to maroon.

Texture:  
Luster: 

Translucency:

Silica Fabrics / Fossils: 

Patina: 

Heat Treatment:

Knapping:

 


 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:
Gettysburg Siltstone is associated with the Gettysburg Formation (Hammer Creek Formation) of the Newark Group of Pennsylvania and into Maryland.  Named for exposures at Gettysburg, Adams County, Pennsylvania.  Exposures occur at the narrow neck of the Newark-Gettysburg Basin, along Hammer Creek, along the Schuylkill River extending into Fredrick County Maryland in the Emmitsburg and Thurmont area.
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:
Archaeological Context: