Field Notebook: CO 1951c
Page 23
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Transcription
3.6 Sandstone, fine grained, laminated with dm silty streaks 3.4 Interbedded silty claystone, shale and argillaceous siltstone & siltstone. Upper 1/2 chiefly shale/claystone, lower bedded silt 2.6 Sandstone, fine grained, laminated with dm silty streaks. 1.7 Dk gray to black silty [illegible] clay with laminae + interbeds of siltstone - chiefly in lower 1/2. 6.5 Sandstone, fine grained dense massive ltc gray 1.0 Hard silty shale, weathers ltc gray + blue gray 2.4 Hard dK gray to black argil (i). siltstone some zones slightly shaley, weathers dark, greenish czst 0.2 Bentonite 5.0 Interbedded dk silty claystones in 2.4 above and fine grained sandstone. 1.9 Dek gray to black fissile wcathy shale. 2.2 Fine grained argill. siltstone, loc. ss, with shaley pting in middle pztH. 1.6 Gray silty clay with white Fe specks, couchy fracture local Fe stain. 5.2 Interbedded argilaceous siltstone and fine ss, local thin beds silty sh. Whole irregi bedded. Shale mostly in upper 1.5 10