resting upon a rather smooth surface of crossroy " Surface locally on cloverly ss, but "most places ss absent & rusty beds resting meroon green shales which are regarded as part of Morrison -" though they may belong to the Cloverly " * This guy had the answer. R.S. Knoppey & G.F. Moulton 1931 (USGS Bull. 822, pp 23-28) (Central Southern Montana) Good stratiq. - Excellent in details. Cloverly as descr. by NHD but thicker and coarser. 3. loose members: (3) Rusty fine-gr ss & sandy sh. 60 ft = Greybull of type (2) Vzzr, clays + mudstones, incl. much andesitic agglom. + very lenticular coarse brown ss. 90-240 Av. 150 (1) Thick irreg mass of black chert (cl), 20-95 feet Av. 45 +tawny yellow ss. (3) Greybull here sharply distinct. - It is pretty fluviial origin but upper bench-forming ss, wave rippled + indicate "definite establishment of marine conditions." (1) Analyzed Cloverly cl - 1% Iq, rest from Madison or Avsden, x beds dip eastward, cals thin N-S, izudness to west indicated. (2) Vzzr unit mapped but not named. Includes polished stones, mostly pink + white quartzite. Doesn't believe they are psestralithus, neither does Stanton. Much of clay swells like bentonite. Highly colored to black. Lenses of dark green andesitic sand, thin layers bentonite, ( Question this - does not mention agglomerate in his extended description. A very lenti. coarse brown ss, [illegible] 30 ft below top of clay. Gets up to 60 ft thick, Included rusty beds in base of their lower shale memb, of Thermopolis. They = lower 100 feet of it and prob. include the ymost of Fall River equivalent,