Ceramic Traditions

Author(s):  
Christina M. Friberg

This chapter presents an analysis of ceramic artifacts collected during recent Audrey site excavations. Jar rims are seriated using established chronological sequences from Cahokia; these patterns are considered in conjunction with AMS dates from four features to date the site to Cahokia’s early Stirling phase (AD 1100–1150). An interregional comparative analysis of ceramic temper, surface finish, orifice diameter, and vessel class from the Audrey site, Greater Cahokia, and northern hinterland regions is conducted to determine the degree to which Audrey inhabitants adopted Cahokian potting practices and/or retained traditional Woodland-era potting techniques and foodways. Finally, the presence of exotic, non-Cahokian pottery at Audrey and northern hinterland sites is considered as potential evidence for interregional exchange and interaction among northern groups.

Author(s):  
C. W. Price ◽  
E. F. Lindsey ◽  
R. M. Franks ◽  
M. A. Lane

Diamond-point turning is an efficient technique for machining low-density polystyrene foam, and the surface finish can be substantially improved by grinding. However, both diamond-point turning and grinding tend to tear and fracture cell walls and leave asperities formed by agglomerations of fragmented cell walls. Vibratoming is proving to be an excellent technique to form planar surfaces in polystyrene, and the machining characteristics of vibratoming and diamond-point turning are compared.Our work has demonstrated that proper evaluation of surface structures in low density polystyrene foam requires stereoscopic examinations; tilts of + and − 3 1/2 degrees were used for the stereo pairs. Coating does not seriously distort low-density polystyrene foam. Therefore, the specimens were gold-palladium coated and examined in a Hitachi S-800 FESEM at 5 kV.


2007 ◽  
Vol 177 (4S) ◽  
pp. 398-398
Author(s):  
Luis H. Braga ◽  
Joao L. Pippi Salle ◽  
Sumit Dave ◽  
Sean Skeldon ◽  
Armando J. Lorenzo ◽  
...  
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