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Showing 1 to 2 of 2 for “"Geologic origin"”.
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Characterization of black deposit associated with rock paintings in Little Lost River Cave, Idaho using Pyrolysis GC
… that the coating has an anthropomorphic origin. Using pyrolysis-gas chromatography-mass spectrometry (py-GC-MS) and thermally-assisted hydrolysis/methylation-GC-MS, we have compared samples of the black coating from Idaho to humic acid, a geologic material; an experimental cooking …
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STRUCTURE, GEOLOGY, AND ENGINEERING PROPERTIES OF TWO CARBONATIC FINE-GRAINED SOILS
Soft, carbonate-rich, fine-grained soils are commonly found in the glaciated regions of the northern United States and throughout Canada. In addition to the high compressibility potential and low shear strength, these sediments are typically characterized by alternating layers of silts and clays as …