Field Notebook: SD, ND 1962
Page 35
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Transcription
covered to top where bvron is concs zve. This is widespread bvron zone. Locally comps brittle is, weth brown, rusty. Numerous + continued to about 1 feet vertical, [3] 3.0 Dr gray silty sh silt gray silt mostly weth or covered interval. [4] 0.3 or less silty bentonitic clay lite gray to greenish gray. (Locl conc-in-conc concretions about 1.0 above) [5] 2.0 - ? Shzlc as in [3] to gravel or slopewash czp. About 1.0 to 1.5 above bentonite locally popcorn crust with sczt conc-in-conc cones. Section 3, Skeleton up spur of hill. Beginning on top bvron layer above proboczdiz. [1] 27.6 Covered except for lower 5.0 which is brush gray silty shzlc with then bentonitic layer & conc-in-conc 2.5+ above Gzsc. At 14 to 15.5 + layer sczt, bvron red brn weth. cones. At top is persistent Jerosite with 16