Field Notebook: SD, ND 1959
Page 41
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Transcription
worth, is conc. - one of scudal scattered about. At top fairly persist. [?yer] czl. brn-worth cones with thick silty lite gray cone-in-cone jackets. Upper 10' t of this unit has more "mixed" than shaly structure 6) 14.5 Shale is in 5 below, dk gray silt laminze, worths light gray scattered limestone cones with silt jackets, or not, in lower 5' t. Lower 8 has jvrosite scattered, local pvcn bed, at 8'. Less common above. In upper 4' thin beds of silt and wfg sznd scattered, some worth rusty brn. Shale silter at top. Upper 10' is dominantly "mixed". 7) 8.5 Shale, gray irreg interlam. or thinly interbedded with yellow brn worth silt and rfg ss. Shale worths hard chunky lite gray, sznd increases upward gradually. 19