Field Notebook: USA 1998b
Page 31
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Transcription
Baker Station continued 3rd cut. (1550' southeast of cut 2) 850' long cut Top 3 cut - We did not climb overgrown cut to find Brassfield Brassfield SB 9' SB? 12' LS, irregularly bedded, silty, fairly well weathered Silty-shale and mudstone in 4"-8" beds LS, massive, X bedded, coarse calcarenite, crinoidal, lower 2" rich in brachs, (Rynchotrema, Herbstella, or Strophomena? Rafinesquana?) SB Shale + siltst Siltst V. fiss/siltst mud shale 23' "Shale+mudstone" Shale+siltst+ minor sandy siltst 3 1/2-4' disrupted siltstone Streptolasma coral bed. SB Rafinesquana (?) or Strophomena (?) Siltst, calc, burrowed Stdy Siltst. Base of RR out 10' Arnhelm not well exposed. 20' ? 15