University of Wisconsin Radiocarbon Dates XXIII

Procedures and equipment used in the University of Wisconsin laboratory have been described in previous date lists. The preamplifiers and counting system were replaced in 1977 using modified EC & G Ortec components. Except as otherwise indicated, wood, charcoal, and peat samples are pretreated with dilute NaOH-Na 4 P 2 O 7 and dilute H 3 PO 4 before conversion to the counting gas methane; when noted marls and lake cores are treated with acid only. Very calcareous materials are treated with HCl instead of H 3 PO 4 . 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-Na 4 P 2 O 7 for 3 hours at room temperature, washed until neutral, and the collagen extracted according to Longin (1971). Charred bone is treated with dilute HCl, NaOH-Na 4 P 2 O 7 , and then dilute HCl again

Archaeology · Charcoal · Hydrochloric acid · Marl · Mineralogy · Nuclear chemistry · Peat · Radiocarbon dating · Radiochemistry · Archaeology and ancient environmental studies · Chemistry · Pacific and Southeast Asian Studies · Pleistocene-Era Hominins and Archaeology · Geology · Inorganic Chemistry · Organic Chemistry

• A groundwater model to explain past lake levels at Parkers Prairie, Minnesota, USA

  Open Access•James E Almendinger•The Holocene•1993

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• University of Wisconsin Radiocarbon Dates XXVII

  Open Access•Christine A Prior, Lori F Phelps•Radiocarbon•1992

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• University of Wisconsin Radiocarbon Dates XXV

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1988

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• University of Wisconsin Radiocarbon Dates XXIV

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1987

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• University of Wisconsin Radiocarbon Dates XXVI

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1990

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• Ceramic Petrography as a Technique for Documenting Cultural Interaction

  Open Access•James B Stoltman•American Antiquity•1991

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• The Biological Consequences of the Mississippian Expansion into the Western Great Lakes Region

  Open Access•Norman C Sullivan•Archeological Papers of the…•1990

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• New Method of Collagen Extraction for Radiocarbon Dating

  Open Access•R Longin•Nature•1971

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• University of Wisconsin Radiocarbon Dates XX

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1983

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• University of Wisconsin Radiocarbon Dates XV

  Open Access•Margaret M Bender, Reid A Bryson et al.•Radiocarbon•1978

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• University of Wisconsin Radiocarbon Dates XXI

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1984

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• University of Wisconsin Radiocarbon Dates XXII

  Open Access•Raymond L Steventon, John E Kutzbach•Radiocarbon•1985

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• Oneota Ridged Field Agriculture in Southwestern Wisconsin

  Open Access•James Gallagher, James P Gallagher et al.•American Antiquity•1985

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