COMPOSITION VARIATIONS IN OBSIDIAN SOURCES AND THE ARCHAEOLOGICAL IMPLICATIONS*

Harry R. Bowman · Frank Asaro · Isadore Perlman

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Cultural Heritage Materials Analysis Mineralogy and Gemology Studies Archaeology and ancient environmental studies

Abstract

ABSTRACTS An obsidian source can exhibit considerable variations in chemical composition. One such flow at Borax Lake in Lake County, California has been carefully investigated by neutron activation analysis of specimens from a number of different loci. It was found that the variable elements were completely coherent, and thus judgements concerning provenience could be just as definitive as with extremely homogeneous materials.

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1969POTTERY ANALYSIS BY NEUTRON ACTIVATION 1964The Characterization of Obsidian and its application to the Mediterranean Region 1969Identification of the Sources of Hopewellian Obsidian in the Middle West

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1975CHARACTERIZATION OF PACIFIC NORTHWEST COAST OBSIDIAN BY X‐RAY FLUORESCENCE ANALYSIS 1999Intrasource Chemical Differentiation of Obsidian in the Jemez Mountains and Taos Plateau, New Mexico 2016Can I get chips with that? Sourcing small obsidian artifacts down to microdebitage scales with portable XRF 2013From flow to quarry: magnetic properties of obsidian and changing the scale of archaeological sourcing 1978Obsidian Sources in Guatemala: A Regional Approach 1977Preliminary Studies of the Trace Element Composition of Obsidian Artifacts from Northern Campeche, Mexico 1982Age and exploitation of obsidian from the Medicine Lake Highland, California 1982The Social Context of Production and Exchange

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