The Petrological Investigation of Roman and Islamic Ceramics from Cyrenaica

Abstract

The methodology of Mediterranean pottery study (for all periods, but especially for the Roman period) has developed considerably over the past fifteen years, and the range of questions asked of it has been greatly extended. Alongside the traditional approach to pottery studies, which concentrates on typology and chronology, there has been an increasing emphasis on the characterization and determination of the origin of pottery using scientific methods, and also a growing awareness of the importance of pottery quantification (i.e. expressing the relative frequency of different pottery types or styles).It is as a result of these latter two developments that coarse, functional wares can now be used convincingly to complement and greatly extend the economic information provided by fine, decorative wares. Cyrenaica has been in the fore-front of this research (see summary in Humphrey 1979), and it is the purpose of this article to provide a preliminary examination of one aspect, namely the contribution of petrological analysis to our understanding of Cyrenaican local pottery fabrics, and of coarse ware imports.Before a satisfactory typology of pottery from any area can be established, and before that pottery can be used most effectively as evidence for the resolution of economic problems, it is essential that the local fabrics should be recognised. Although visual classification of pottery fabric types is often possible on the basis of subjective factors such as general appearance, texture, hardness, nature of inclusions, etc. (as described in Young in press), there are often problems when attempting to establish their origin. This is normally best done by scientific analysis, using either geological or chemical techniques. It is rapidly becoming the routine practice to analyse fabrics, in the first instance, by geological methods (to identify the major inclusions within the clay), and then, if necessary, by chemical methods (which analyse the elemental composition of the clay).