Field Notebook: SD 1940
Page 47
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Transcription
34 Loc. 30 MR4-2 # 13 C OF (150 yds west of # 13C.) South facing bluff above bench at top of gully Section (Brenton handlevel) Sample numbers = 5'5" Section taken from persistent cone layer at base of sample number #13 of section at 13 C. Sample numbers start with #13 also. (13 OF) 5'5" Base = Essentially barren cone layer. (14 OF - 16 OF) 16'3" Sandy brown shale weathering grey brown. Capped by zone of concretation-like gobs of altered bentonitic