Field Notebook: CO 1951c
Page 95
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Transcription
AIN-50-19 1. Best exposure of lower half of Grumeros in area. Find out who takes shale from here & why. Get section of it, Rustler mine - Robinson. 2. Bedding surface on top of massive SS N 4°E, 36°S (This at base of clay & bentonite just under ? *upper Old tunnel. Cuts bentonite-clay & goes on in still open. 3. Here platy SS opens up & clay bed comes into it, lower part of SS ceases to be crest former 4 Clay bed in 3 above wide here, 10'±, makes bench, 10 5. Massive x-lam SS comes in over top split of platy SS cuts into clay over this SS & merges with it. becomes redly former. 6. Massive x-lam conglomer. SS orange to pink stain Fe specks. Above on this slope 2 more ledges, next up is coarse cql; then one of med-coarse SS. 7. Good exposure of Glencirun from first SS of it down to Little Contact. All along ridge from above 6 to here the 1st Glencirun crops hogbacky, is thick, evenly bedded & bedder to platy with some massive zones & intraform cql locally at base. It thic/kens abruptly just E of 6. At 7 and north and south of it the Little Glencirun contact just below the second 49