gas chromatography-mass spectrometry (Other Keyword)
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Residues of ancient food preparation in sheltered bedrock features (2015)
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Recent analysis of bedrock features located in several dry rock shelters across the arid western U.S. indicate that such settings provide favorable contexts for organic residue preservation. Residues extracted from these contexts can provide a unique window into past functions and resource use. Gas chromatography / mass spectrometry (GC/MS) was used to identify and quantify very small amounts of lipids absorbed and preserved in the various bedrock features. Though organic residue studies are...