Figure F3. Example of X-ray diffraction analysis of sediment samples from Gulf of Alaska (Section 341-U1417E-39R-7. A. Bulk sample diffraction pattern reflecting clay, quartz, and plagioclase content. Calcite is not present in this sample, but the location of the characteristic peak is indicated as identified in other samples of this study (Table T6). B. Result of the X-ray diffraction analysis of clay-size fraction after exposure to ethylene-glycol, reflecting the characteristic peaks of smectite, illite, and the shared peak of kaolinite/chlorite.
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