Cohen-Ofri, I., Weiner, L., Boaretto, E., Mintz, G. and Weiner, S. (2006). Modern and fossil charcoal:. J Archaeol Sci 33 (3). Vol 33(3), pp. 428-439.
 Title The title of the publication or report |
Modern and fossil charcoal: | ||||||
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Subtitle The sub title of the publication or report |
aspects of structure and diagenesis | ||||||
Issue The name of the volume or issue |
J Archaeol Sci 33 (3) | ||||||
Series The series the publication or report is included in |
Journal of Archaeological Science | ||||||
Volume Volume number and part |
33 (3) | ||||||
Page Start/End The start and end page numbers. |
428 - 439 | ||||||
Biblio Note This is a Bibliographic record only. |
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Publication Type The type of publication - report, monograph, journal article or chapter from a book |
Journal | ||||||
Abstract The abstract describing the content of the publication or report |
The structures and compositions of modern and fossil charcoal samples were compared in order to evaluate charcoal degradation processes in archaeological sites. Modern charcoal samples produced in campfires contain two major phases: graphite-like microcrystallites and a non-organized phase. These phases create a mosaic-like structure with differing relative proportions depending on the taxonomic source of the wood used. Fossil charcoal samples from Israel also contained the graphite-like microcrystallites and the non-organized phases, but were clearly altered compared to modern charcoal. The graphite-like phase of the fossil charcoal has much higher electrical resistivity, and its ESR properties show that it has markedly altered surface electronic states. Infrared spectra show the presence of additional carboxylate groups. Oxidation has therefore altered the structure. This appears to be a ``self-humification'' process that affects the graphitic component, and probably the non-organized phase as well. | ||||||
Year of Publication The year the book, article or report was published |
2006 | ||||||
Locations Any locations covered by the publication or report. This is not the place the book or report was published. |
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Source Where the record has come from or which dataset it was orginally included in. |
BIAB
(The British & Irish Archaeological Bibliography (BIAB))
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Relations Other resources which are relevant to this publication or report |
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Created Date The date the record of the pubication was first entered |
15 May 2006 |
