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University of Wisconsin Radiocarbon Dates XIX

Published online by Cambridge University Press:  18 July 2016

Margaret M Bender ,
David A Baerreis ,
Reid A Bryson  and
Raymond L Steventon
Margaret M Bender
Affiliation:
Center for Climatic Research, Institute for Environmental Studies, 1225 W Dayton Street, University of Wisconsin-Madison, Madison, Wisconsin 53706
David A Baerreis
Affiliation:
Center for Climatic Research, Institute for Environmental Studies, 1225 W Dayton Street, University of Wisconsin-Madison, Madison, Wisconsin 53706
Reid A Bryson
Affiliation:
Center for Climatic Research, Institute for Environmental Studies, 1225 W Dayton Street, University of Wisconsin-Madison, Madison, Wisconsin 53706
Raymond L Steventon
Affiliation:
Center for Climatic Research, Institute for Environmental Studies, 1225 W Dayton Street, University of Wisconsin-Madison, Madison, Wisconsin 53706
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Procedures and equipment have been described in previous date lists. Except as otherwise indicated, wood, charcoal and peat samples are pretreated with dilute NaOH–Na4P2O7 and dilute H3PO4 before conversion to the counting gas methane; marls and lake cores are treated with acid only. Very calcareous materials are treated with HCl instead of H3PO4. Pretreatment of bone varies with the condition of the bone sample, solid bone with little deterioration is first cleaned manually and ultrasonically. The bone is treated with 8% HCl for 15 minutes, then dilute NaOH–Na4P2O7 for 3 hours at room temperature, washed until neutral, and the collagen extracted by Longin's method (Longin, 1971). Charred bone is treated with dilute HCl, NaOH–Na4PO7, and then dilute HCl again.

Type
Date Lists
Information
Radiocarbon , Volume 24 , Issue 1 , 1982 , pp. 83 - 100
Copyright
Copyright © The American Journal of Science 

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