Field Notebook: Maryland, Washington, DC 1921
Page 63
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Transcription
Sep. 16 (Monday. Spent the morning in 2 small quarries about one mile east of Shulocks farm. Both are in the upper Heterocrita exposure about 25 to 30 feet. The lower and upper beds of these quarries are they are even bedded while in the center there is a heavy bedded dolomite with gastropods. Most of the O. quarries are Leyardiis occur in the lower beds. T. spicaeantius is very rare here. The Marlum is a may exceed 40 to 50 feet. About 10 to 20 feet of Cogmans are shown in the top of the hill. Have some fossils. In the afternoon walked to a large quarry at Days store about 3/2 mile east of Shulocks farm. The limestone is the same as the little quarry on Jerusalem Hill in which we dug for Ammonites. After looking around a little we began to find indications of crinoids and I did find a fine Maribacrinus. We also found another new crinoid of which I sawed two and Becker at a mine. The