Abstract
AbstractAssignment by instrument of Maya obsidian artifacts to geological sources has demonstrated the presence of several sources and variations in their distribution over time and space. Of special interest is the minor, but long-standing, presence of green and gray obsidian from Central Mexico. More attributions of large, carefully selected samples are necessary to continue the considerable progress already achieved in understanding Maya obsidian procurement and use. However, assignment by visual means is not an appropriate method for the Maya area because of the range of optical characteristics exhibited by gray Guatemalan and Central Mexican obsidians, some of which are common to several geological sources. Moreover, the determination of obsidian sources must not be considered an end in itself. Combining source results with behavioral typology and archaeological data can further our understanding of obsidian procurement and use in past cultural context. Finally, it would be helpful if analysts reported trace element composition in a standardized manner, so that archaeologists can easily compare the results from different laboratories.
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