Field Notebook: SD, WY 1961
Page 39
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Transcription
Section #4, On Hell Cr bluffs at bdlznd rim in center of line between secs 32 and 33, T.14 N., R.19 E. Starting at jvosite blob zone top of unit 5, Section 2. (1) 6.0 Lignitic shale and gray to brown-gray shale with plant frags (2) 2.5 Clayey silt gray-bn gray with crvb frags. (3) 2.5 Lignitic shale and purple gray clayey silt. Local Fe accumulation at top some Fe stone chips, locally textlit dinosaur bone. (Sample 1) [Union? from here was in float.] (Coll 74 #5) A664 (4) 2.5 Light bn gray skzley silt with crvb. frags, local lenses of lignitic shale at top. (5) 23.0 Sandstone, subgraywacke, fq to vfg interstitial clay, weathes to light gray fluted bluff. Cross bedding shown by crvb zones of laminz, Fe conc layers at crumbly bn Fe cementation, and OB colored zones laminze. Also has some soft oval jvositic lumps and some platy-oval calc cemented gray white weath. kilzm. conc mosses. Fragments carbonized wood are common, and lower 5' contzns lzrgo poorly preserved shells whose thick pearly shell suggests Unios A663 Sample 2, Unios, S2nd + bone frags from unit (Coll 74 #4) 18