RBGlass1 {archdata}

Romano-British Glass, Major and Minor Elements

Description

The concentrations for 11 major and minor elements in 105 Romano-British waste glass specimens from two furnace sites (Leicester and Mancetter).

Usage

data("RBGlass1")

Format

A data frame with 105 observations on the following 12 variables.

Site

a factor with levels Leicester and Mancetter

Al

Percentage Aluminum

Fe

Percentage Iron

Mg

Percentage Magnesium

Ca

Percentage Calcium

Na

Percentage Sodium

K

Percentage Potassium

Ti

Percentage Titanium

P

Percentage Phosphorus

Mn

Percentage Manganese

Sb

Percentage Antinmony

Pb

Percentage Lead

Details

The concentrations for 11 major and minor elements in 105 Romano-British waste glass specimens from two furnace sites (Leicester and Mancetter) come from Caroline Jackson's Ph. D. thesis at Bradford University. The data here were scanned from from Baxter (1994) Table A1. Measurements are percentage for each element.

Source

Baxter, M. J. 1994. Exploratory Multivariate Analysis in Archaeology. Edinburgh University Press.

Jackson, C. M. 1992. A Compositional Analysis of Roman and Early Post-Roman Glass and Glass Working Waste from Selected British Sites Towards an Understanding of the Technology of Glass-Making Through Analysis by Inductively-Coupled Plasma Spectrometry. Unpublished PhD thesis. Bradford University (BL: D214554).

References

Baxter, M. J., Cool H.E.M., Heyworth M.P. and Jackson, C.M. 1995. Compositional Variability in Colourless Roman Vessel Glass. Archaeometry 37(1), 129-141.

Baxter, M. J., Cool, H. E. M. and Jackson, C. M. (2005). Further Studies in the Compositional Variability of Colourless Romano-British Glass. Archaeometry 47, 47-68.

Carlson, David L. 2017. Quantitative Methods in Archaeology Using R. Cambridge University Press, pp 245-247, 256-261.

Jackson, C M, J R Hunter, S E Warren, and H E M Cool. 1991. The Analysis of Blue-Green Glass and Glassy Waste from Two Romano-British Glass Working Sites. In Archaeometry 1990, edited by E. Pernicka and G. A. Wagner, pp 295-304. Birkhäuser Verlag.

Examples

data(RBGlass1)
RBGlass1.pca <- prcomp(RBGlass1[, -1], scale.=TRUE)
biplot(RBGlass1.pca, xlabs=abbreviate(RBGlass1$Site, 1), cex=.75)