Field Notebook: SD, WY 1961
Page 41
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Transcription
(6) 3.0 silt, finely silty, light gray, wreaths with greenish cast (7) 1.0-2.0 liquidic silt, purplish brun, (8) 6.0 silt, brownish gray, silty pizut frags OB wreath concs in lower 2', grades to unit (9) (9) 3.0 liquidic silt with locuses lignite and papery silty silt abundant pizut frags. (10) 9.0 silt, clayey to silty, brun gray - lite wreath scott, czeb frags some locuses very thin, silt + silt. Some jerosite blocks + OB wreath concs upper 2'. (11) 4.0 liquidic silt with purplish gray, brun with frags when fresh (12) 2.0 silt, clayey, light gray (13) 2.0 czeb 'papery' silt grading to purplish brun liq. silt. (14) 13.5 sandstone, lower foot + soft friable with jerosite lumps + zonal OB wreath Fe concs. Becomes subgraywacke with some clay and irreg masses czeb, cem, ss, upper 5' is clayey silt, capped by OB chip layer slope on clayey soil. 19