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<p>Hello Justin,<br>
<br>
By looking at your photo, they seem to be a microwave pattern.<br>
I find similar marks on upper paleolithic bone tool surfaces ( I do not know if it is the same chronology of your tool). They result from the attrition when you use a lithic tool, such as a scraper on the bone surface. They are documented in an article published in 1894:<br>
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D’ERRICO, F., GIACOBINI, G., PUECH, P.-F. (1984) – Varnish Replicas: A New Method for the Study of Worked Bone Surfaces. <em>OSSA</em>, vol 9-11, pp. 29-51<br>
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I do not have it in pdf, sorry...<br>
In my experimental work, I also found them, by using a retouched lithic tool, other then a scraper.<br>
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Hope it helps.<br>
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Cheers,<br>
Marina<br>
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<p>Quoting Justin Bradfield <<a href="mailto:jbradfield8@gmail.com">jbradfield8@gmail.com</a>>:</p>
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<div dir="ltr">Dear WBRG
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<div>Can anyone help me identify the cause of these cracks that develop in striations/cuts on bone (see attachment)?</div>
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<div>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. </div>
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<div>Thanks in advance</div>
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<div>Justin</div>
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Marina Évora<br>
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