Field Notebook: Maryland, New Jersey, New York, Pennsylvania, West Virginia 1910
Page 41
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Transcription
"See anything in the way of a discordancy here but the striking difference in the lithology and fauna of the two series brings to mind [illegible] material. Ordinarily one would not expect to find it in this position. The contact between the chalk near Failand is also now easily seen. The shale beds are somewhat truncated, and the residual beds of the decomposed flints of the Oolite, at the base of the Oolite and then where a reddish zone abuts on the shale beds. The transition from the cherty oyster limestone beds is gradual. The thickness of the shale here is not more 15 feet. Which says 12 feet. At 21st of Bridger beneath the oyster limestone there is a distinct residual clay from an inch to 18 inches thick. Before this red clay the oyster limestone has a base a thickness of 26 feet joining into the flint shale above. Below the residual clay is the heavy bedded Creymans limestone that in places still shows slight channeling due to the decomposition. Where the residual clay is thicker than the top is irregular and even away into which the bottom of the oyster limestone beds fit. Where the clay is thinnest then the contact of the two limestones is regular. The many forams I got are about 300 feet below the contact on the chalk limestone. Characterized by Rhynchomella lamellosa, Rhyncophora, Alveorina and abundant P. Byrsa. These made the base here of the Torclawcy. Which says the cement beds follows in.