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Grain size analyses in tin-lead glazes based on 2d-sections

A problem in the archaeometric classification of Catalan Renaissance pottery is the fact, that the clay supply of the pottery workshops was centrally organized by guilds, and therefore usually all potters of a single production centre produced chemically similar ceramics. However, analysing the glazes of the ware usually a large number of inclusions in the glaze is found, which reveal technological differences between single workshops. These inclusions have been used by the potters in order to opacify the transparent glaze and to achieve a white background for further decoration. In order to distinguish different technological preparation procedures of the single workshops, at a Scanning Electron Microscope the chemical composition of those inclusions as well as their size in the two-dimensional cut is recorded. Based on the latter, a frequency distribution of the apparent diameters is estimated for each sample and type of inclusion. Following an approach by S.D. Wicksell (1925), it is principally possible to transform the distributions of the apparent 2D-diameters back to those of the true three-dimensional bodies. The applicability of this approach and its practical problems are examined using different ways of kernel density estimation and Monte-Carlo tests of the methodology. Finally, it is tested in how far the obtained frequency distributions can be used to classify the pottery

Geologische Vereinigung; Institut d鈥橢stad铆stica de Catalunya; International Association for Mathematical Geology; Patronat de l鈥橢scola Polit猫cnica Superior de la Universitat de Girona; Fundaci贸 privada: Girona, Universitat i Futur; C脿tedra Llu铆s Santal贸 d鈥橝plicacions de la Matem脿tica; Consell Social de la Universitat de Girona; Ministerio de Ciencia i Tecnolog铆a.

Universitat de Girona. Departament d鈥橧nform脿tica i Matem脿tica Aplicada

Manager: Mateu i Figueras, Gl貌ria
Barcel贸 i Vidal, Carles
Other contributions: Universitat de Girona. Departament d鈥橧nform脿tica i Matem脿tica Aplicada
Author: Schwedt, A.
Buxeda i Garrig贸s, Jaume
Madrid Fern谩ndez, Marisol
Date: 2005 October
Abstract: A problem in the archaeometric classification of Catalan Renaissance pottery is the fact, that the clay supply of the pottery workshops was centrally organized by guilds, and therefore usually all potters of a single production centre produced chemically similar ceramics. However, analysing the glazes of the ware usually a large number of inclusions in the glaze is found, which reveal technological differences between single workshops. These inclusions have been used by the potters in order to opacify the transparent glaze and to achieve a white background for further decoration. In order to distinguish different technological preparation procedures of the single workshops, at a Scanning Electron Microscope the chemical composition of those inclusions as well as their size in the two-dimensional cut is recorded. Based on the latter, a frequency distribution of the apparent diameters is estimated for each sample and type of inclusion. Following an approach by S.D. Wicksell (1925), it is principally possible to transform the distributions of the apparent 2D-diameters back to those of the true three-dimensional bodies. The applicability of this approach and its practical problems are examined using different ways of kernel density estimation and Monte-Carlo tests of the methodology. Finally, it is tested in how far the obtained frequency distributions can be used to classify the pottery
Geologische Vereinigung; Institut d鈥橢stad铆stica de Catalunya; International Association for Mathematical Geology; Patronat de l鈥橢scola Polit猫cnica Superior de la Universitat de Girona; Fundaci贸 privada: Girona, Universitat i Futur; C脿tedra Llu铆s Santal贸 d鈥橝plicacions de la Matem脿tica; Consell Social de la Universitat de Girona; Ministerio de Ciencia i Tecnolog铆a.
Format: application/pdf
Citation: Schwedt, A.; Buxeda i Garrig贸s, J.; Madrid Fern谩ndez, M. 鈥橤rain size analyses in tin-lead glazes based on 2d-sections鈥 a CODAWORK鈥05. Girona: La Universitat, 2005 [consulta: 6 maig 2008]. Necessita Adobe Acrobat. Disponible a Internet a: http://hdl.handle.net/10256/691
ISBN: 84-8458-222-1
Document access: http://hdl.handle.net/10256/691
Language: eng
Publisher: Universitat de Girona. Departament d鈥橧nform脿tica i Matem脿tica Aplicada
Rights: Tots els drets reservats
Subject: Arqueometria
Title: Grain size analyses in tin-lead glazes based on 2d-sections
Type: info:eu-repo/semantics/conferenceObject
Repository: DUGiDocs

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