Progressive Loss of Carbon and Nitrogen from Simulated Daub on Heating
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CONTRIBUTORS:
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JOURNAL:
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Journal of Archaeological Science,
23(5),
639 -
648.
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YEAR:
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1996
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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archaeology, construction, architecture, daub, experimental archaeology, simulations, carbon, nitrogen, tempering, additives, clay, loess, milk, urine, firing, burning, Huettenlehm
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DISCIPLINE:
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Architecture/Urban Planning
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-426-225
(Last edited on
2006/09/16 21:24:47 GMT-6)
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SPONSOR(S):
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ABSTRACT:
Various additives can be distinguished in simulated daub. Briquettes of loess and water with and without barley straw as well as milk and urine were heated in 100#&176;C steps to 800#&176;C. Visual examination distinguished soak temperatures and straw presence, while C, N and the C:N ratio distinguished between the additives. Generally straw dramatically increased the C retention up to 500#&176;C, while N was not so strongly differentiated. The zoological additives, especially in combination with straw, produced higher N values up to 400 and 500#&176;C as well as showing complex temperature-dependent changes. Since biological additives are often used in daub, their potential identification increases the amount of information obtainable from this ubiquitous material.
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