Figure F18. Untreated, heated, and glycolated clay-separation XRD diffractograms of a Subunit IIB sample taken at 191.60 mcd (Sample 208-1265A-18H-7, 62 cm; 169.60 mbsf) illustrating a clay mineral assemblage comprising kaolinite, illite, and smectite.

Figure F18. Untreated, heated, and glycolated clay-separation XRD diffractograms of a Subunit IIB sample taken at 191.60 mcd (Sample 208-1265A-18H-7, 62 cm; 169.60 mbsf) illustrating a clay mineral assemblage comprising kaolinite, illite, and smectite.