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An introduction to excavation methods for archaeologists.Fortunately, physical-chemical sourcing techniques such as X-ray fluorescence ( Shackley 1995) permit identification of the sources of many obsidian artifacts. ... It is a good practice to retain a cup or two of soil from flotation samples before they are floated in case ... It is always better to take more samples than you expect to need because new questions and different ways of testing project hypotheses always present themselves, and sometimes these samples can provide answers.

Author:David L. Carmichael, Robert H. Lafferty, Brian Molyneaux
Publisher:Rowman Altamira - 2003


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