Identifying Lithic Reduction Loci with Size-Graded Macrodebitage: A Multivariate Approach

Abstract

This paper presents a method of identifying lithic reduction loci based on size-sorted debitage in the macroscopic size range. Multivariate analysis of decremental size classes of debitage derived from the use of nested screening provides a means of investigating the differential operation of size sorting at various size levels, so that size thresholds for distinguishing deposits of probable primary and secondary refuse can be identified on empirical grounds. The method is used to distinguish refuse dumps from what appear to be lithic reduction loci within an obsidian core/blade workshop excavated at the Early Postclassic city of Tula, Hidalgo, Mexico.

Ground Platform Preparation and the “Banalization” of the Prismatic Blade in Western Mesoamerica

“…In reality, the investment of time and energy may have been much less of a factor than it might seem if ground platform preparation was a task performed by others. At the Tula workshop, soil residue analysis suggests that much of the workshop activity was performed outdoors and away from the house compound, conveniently located near a refuse dumping area (Healan 1995). On the other hand, numerous grinding slabs were found in situ on floors inside at least one of the houses, suggesting that platform grinding, a task that may have required more “elbow grease” than skill, was performed by household members other than the blademakers themselves.…”

Particle size distribution of lithic assemblages and taphonomy of Palaeolithic sites

“…It is assumed that the particle size composition of the discarded material lacks small artefacts (particularly if the detritus have been manually evacuated one by one to the dumping area) (cf. Fladmark, 1982;Behm, 1983;Healan, 1995).…”

Excavation of an Obsidian Craft Workshop at Teotihuacan, Mexico

“…An obsidian craft workshop is normally defined as a place where obsidian tools are produced for export and use elsewhere (Clark 1986a, 1989). It is expected to have a high concentration of production related debris including microdebitage in the area of production (Clark 1986a, 1989; Healan 1992, 1995; Moholy-Nagy 1990). The issue with identifying obsidian craft production is complicated by two factors.…”