Silo science and portable XRF in archaeology: a response to Frahm |
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| Authors: | Robert J. Speakman M. Steven Shackley |
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| Affiliation: | 1. Center for Applied Isotope Studies, University of Georgia, Athens, USA;2. Geoarchaeological XRF Laboratory, University of California, Berkeley, USA |
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| Abstract: | A recent study by Frahm (2013) on the application of portable XRF (PXRF) for chemical characterization of obsidian ignores fundamental issues of reliability and validity in the measurements, and justifies “internally consistent” measurements as acceptable. We argue this form of science is unacceptable, point out several flaws in Frahm's paper, and provide some examples of PXRF measurements that are valid and reliable and conform to international standards as published. |
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