Field Notebook: SD, ND 1959
Page 63
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Transcription
Loc. 30-G, Southeast trending toe of spur (loc 200) Section 1. Measuring up from conc. layer (C) = Protocresciz: conc. layer (See page 41 et. seg. for reminder of revised loc. 30 section) ① 3.0 Covered - float shelly ② 18.0 Silt, clayey, loc. shaly, blobs and beds of j2vosite. Weathers lite brownish to yellowish gray yellow splotches. Fresh is gray to dilute gray chiefly mixed, some silt layers. Very sharp upper contact. Concs like-Duic type, conc-in conc jackets, locally. ③ 9.0 Shely, silty, brownish gray) weathers to brownish gray checked slope, very distinct from underlying unit. At top is zone red-bry weath, is concs (zone B) - the barren zone 30