Field Notebook: SD, CO, WY 1967
Page 47
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Transcription
locally with interference type crossway on top crossed by troughs, ridge with variety of burrows, including inclined pencil drilling, U-shaped pencil drilling (may be L-shaped?), spindle burrows (few) Bedding from lzm to ripple lzm sets. Unit 2. Chiefly covowed but as below with yellowish-orange sand + sh pebbles. Top is local cone masses RB calcite. Pitery thinly lzm sand +20 20' (13') Unit 3 Sand, yellowish orange becoming more massive, looking due to loss of most of shale interbeds. Trough units thicker, still low L X-lzm., vfg Local cone masses form ledges most are discontinuous but upper complexed with irreg bottoms. in the ss. One about 4.0 from base has ophite network on surface; commonly then are ripple wind -3° 36' (11') Unit 4 As in unit 3, but a few more shale pty's?, some contorted beds sand loc. conc-ized also +14° 44' (25') 21