[Bonetools] Wave-like cracks in striations

[David Constantine]

Hi Justin, 

I would say that they are cracks through age. They are starting from the cuts/striations as there will be many tiny weak spots along the length where small chips of bone have flaked away through manufacture or use. Similar to the way a porthole in a ship would start to crack at the corners if it they were angled rather than rounded. 

Regards,

David Constantine 


     On Sunday, 23 August 2015, 10:18, Justin Bradfield <jbradfield8 at gmail.com> wrote:
   

 Dear WBRG
Can anyone help me identify the cause of these cracks that develop in striations/cuts on bone (see attachment)?
I've noticed this feature in several archaeological tools but never in my experimental replications. Could this be a natural property of aged bone or could a specific contact material be the cause? I've only ever noticed it in striations. 
Thanks in advance
Justin


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