Field Notebook: SD, NE 1959
Page 115
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Transcription
except some barren red-to orange- brown weather, blue-gray limestone concs that are locally scattered about at change to sandy beds (see 57A-section 2). However float at 57 and 57 B suggests that the upper Dinic layer may be fossiliferous and present. (5) The Protoceratiz-nebraskensis concs appear to come from an interval of about 5 or 6 feet beginning about 4 feet above the change to dominantly sandy beds. The concs commonly have silt jackets, are hard dark-blue-gray in cores when fresh and are abundantly ammonitiferous. (6) Glauconite zone occurs well above the Protoceratiz concs here- Compare this with Loc. 50 (Happy Hill) (7) Barren zone of large concs overlying the glauconite zone has large-chiefly gray-weathering concs some with yellow celcite cement in crecks. One spec. of fossil found- Lucina occidentalis,