Field Notebook: Maryland, Washington, DC 1921
Page 61
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Transcription
Jerusalem Stone. Then a sharp rise to expresses of heavy bedded limestone about 50 feet above the road. These heavy beds tend to abut in segments of a large crinoid, and great quantities of the stems of deepa and other articulations. decorations, also Faroutia seem here (here me) and only Symmetra. Above the last bend there is another sharp rise to the quarry level from which many years ago were taken the Homorcinus rock for stone walls. The Quarry (Wheeler's) high in the cliff, overlooks one of Jerusalem Stiles. The face of the quarry is about 25 feet and the Homorcinus layers are about 5 feet above the lowest part of the quarry. About six inches above the divided crinoth layer is the one with Mariacrinus. Above the latter about from foot in a hard crystalline layer with small black specks, ditto. In another quarry once back on the same line higher beds are shown and at