Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem

Alteration and contamination processes modify the chemical composition of ceramic artefacts. This is not restricted solely to the affected elements, but also affects general concentrations. This is due to the compositional nature of chemical data, enclosed by the restriction of unit sum. Since it is...

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Detalles Bibliográficos
Autor: Buxeda i Garrigós, Jaume
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:1999
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/32744
Acceso en línea:https://hdl.handle.net/2445/32744
Access Level:acceso abierto
Palabra clave:Ceràmica prehistòrica
Arqueometria
Química arqueològica
Prehistoric pottery
Archaeometry
Archaeological chemistry
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spelling Alteration and Contamination of Archaeological Ceramics: the Perturbation ProblemBuxeda i Garrigós, JaumeCeràmica prehistòricaArqueometriaQuímica arqueològicaPrehistoric potteryArchaeometryArchaeological chemistryAlteration and contamination processes modify the chemical composition of ceramic artefacts. This is not restricted solely to the affected elements, but also affects general concentrations. This is due to the compositional nature of chemical data, enclosed by the restriction of unit sum. Since it is impossible to know prior to data treatment whether the original compositions have been changed by such processes, the methodological approach used in provenance studies must be robust enough to handle materials that might have been altered or contaminated. The ability of the logratio transformation proposed by Aitchison to handle compositional data is studied and compared with that of present data treatments. The logaratio transformation appears to offer the most robust approachElsevier Ltd1999info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/32744Articles publicats en revistes (Història i Arqueologia)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: http//dx.doi.org/10.1006/jasc.1998.0390Journal of Archaeological Science, 1999, vol. 26, p. 295-313http://dx.doi.org/10.1006/jasc.1998.0390(c) Elsevier Ltd, 1999info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/327442026-05-27T06:46:51Z
dc.title.none.fl_str_mv Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
title Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
spellingShingle Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
Buxeda i Garrigós, Jaume
Ceràmica prehistòrica
Arqueometria
Química arqueològica
Prehistoric pottery
Archaeometry
Archaeological chemistry
title_short Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
title_full Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
title_fullStr Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
title_full_unstemmed Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
title_sort Alteration and Contamination of Archaeological Ceramics: the Perturbation Problem
dc.creator.none.fl_str_mv Buxeda i Garrigós, Jaume
author Buxeda i Garrigós, Jaume
author_facet Buxeda i Garrigós, Jaume
author_role author
dc.subject.none.fl_str_mv Ceràmica prehistòrica
Arqueometria
Química arqueològica
Prehistoric pottery
Archaeometry
Archaeological chemistry
topic Ceràmica prehistòrica
Arqueometria
Química arqueològica
Prehistoric pottery
Archaeometry
Archaeological chemistry
description Alteration and contamination processes modify the chemical composition of ceramic artefacts. This is not restricted solely to the affected elements, but also affects general concentrations. This is due to the compositional nature of chemical data, enclosed by the restriction of unit sum. Since it is impossible to know prior to data treatment whether the original compositions have been changed by such processes, the methodological approach used in provenance studies must be robust enough to handle materials that might have been altered or contaminated. The ability of the logratio transformation proposed by Aitchison to handle compositional data is studied and compared with that of present data treatments. The logaratio transformation appears to offer the most robust approach
publishDate 1999
dc.date.none.fl_str_mv 1999
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/32744
url https://hdl.handle.net/2445/32744
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http//dx.doi.org/10.1006/jasc.1998.0390
Journal of Archaeological Science, 1999, vol. 26, p. 295-313
http://dx.doi.org/10.1006/jasc.1998.0390
dc.rights.none.fl_str_mv (c) Elsevier Ltd, 1999
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier Ltd, 1999
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Història i Arqueologia)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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