7/15/83 8321 BASE of Section STARTS in Actax bed at 0.04m 0 cm Hance Fm. Clay, unctuous, dusky dark grey) carbonaceous (S Y2/2) slickensided CLAY that looks as if it is an underclay Becomes darker & more carbonaceous in upper 3cm. Some limonite + jarosite on joints 4cm - STAINING of dark grey carbonaceous Clay pinching & swelling & merging w/ the The lignite 46 cm North 5cm LENS of med grey MUDST, w carb, foot impressions Thin to 0-40cm N x 50 cm S where it is replaced by lignite 8.5 Fort UNION Fm. lignite BLOCKY, BLACK limonite STAINING on