Experimental analysis of the practical limits of lithic refitting

We report on the results of an experiment aimed at determining the effects of experience/aptitude, lithic reduction type (biface v. core), and flake size cut-offs on different rates of success in refitting studies. We found that experience matters, but that there can be large differences in aptitude for refitting; that cores are easier to refit than bifaces; and that the effort of refitting increases considerably for flakes smaller than 5–6 g. We propose the use of an asymptotic equation fit to a cumulative curve as a way to determine when a study has reached the point of diminishing returns for a given flake size cut-off, and to help determine differences in aptitude for refitting.     

An estimator for bidirectional (naviform) blade productivity in the Near Eastern Pre-Pottery Neolithic B

A method is presented for calculating the blade productivity of bidirectional (naviform) blade cores, a hallmark of Near Eastern Pre-Pottery Neolithic B (PPNB) chipped stone tool assemblages. This approach involves estimating the volume of the core that furnished serial blades, together with the mean volume of a typical targeted blade blank. Simple computation of the volume of a wedge in both instances provides an estimate of the number of targeted blades that were produced in an average single reduction sequence. The method is checked against two replicated bidirectional blade reduction sequences, and a refitted bidirectional blade core from the site of Kfar HaHoresh, Israel. Finally, a case study from Kfar HaHoresh is presented in order to illustrate the application of the method, which may have ramifications concerning the evaluation of incipient craft specialization in the region.     

Refuse patterning and behavioral analysis in a pinniped hunting camp in the Late Jomon Period: A case study in layer V at the Hamanaka 2 site,Rebun Island,Hokkaido, Japan

During the Dobayashi New Phase (ca. 1450 cal BC–1300 cal BC), the Jomon maritime hunter–gatherers established pinniped hunting camps at the Hamanaka 2 site on Rebun Island, Hokkaido, Japan. They used the camps for animal processing and possibly cooking meat or processing fat using pottery vessels. Concentrations of conjoinable pottery around hearth features reveal that hearths were centers of activity. Analysis of conjoinable pottery within the excavated areas also indicates that artifacts were moved for the purposes of maintenance and cleaning of the hearths and activity areas.