SUMMARYCeramics and glass represent synthetic metamorphic rocks and obsidian, respectively. Consequently, it is not surprising that many archaeologists have collaborated with geologists on projects dealing not only with lithic artifacts, but with ceramic and glass objects as well. This paper presents an overview of these latter two materials from a geological perspective, considering in turn how they are characterized and classified, their ages constrained, provenance and in some instances use determined, and how they were made.
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INTRODUCTIONIn the course of their education, geologists become well versed in the traditional mainstays of their disciplinemineralogy, stratigraphy, petrology, geochemistry, paleontology, geochronology, structural geology, tectonics -along with a smattering of supporting sciences. Among other things, we learn to place time and space in a broader context than most other scientists aside from astronomers. Archaeologists are not much different, although their appreciation of time is on a much more restricted scale -typically centuries and millennia rather than mega-and gigaannum. Moreover, they usually map on a much more detailed scale than field geologists, and the third dimension of