Page:The Journal of geology (IA journalofgeology11893univers).pdf/386

Plate V.—Geological Map of portions of Sheffield, Mass., and Salisbury, Conn., based on the Sheffield and Cornwall sheets of the Topographical Map of the United States by the U. S. Geological Survey. Scale 1:62,500.

Plate VI.—Series of Geological Sections to accompany Plate V. Their location is indicated on the map (Plate V.) Horizontal Scale: one inch equals one mile. Vertical Scale: one-eighth inch equals five hundred feet.

Plate VII.—Fig. 1. View showing the southern termination of one of the longitudinal undulations of the western schist anticlinal, as seen from the west. A, Southern limit of a ridge of Riga Schist (No. 10). B, Turnip Rock (Everett Schist). C, Barack M'Teth (Everett Schist). D, Knoll of Riga Schist. E, Tom's Hill in the distance. F, Ridge No. 6 (Riga Schist). The dotted and dashed line shows the approximate boundary between the Riga Schist and the Egremont Limestone, and the dotted line the approximate boundary between the Egremont Limestone and the Everett Schist.

Fig. 2. View of schist ridges separated by belts of limestone at the southeast base of Tom's Hill near the railroad bridge. A, B, C, Schist ridges. D, Slope of Tom's Hill where a fourth schist belt is hidden in the trees.

Fig. 3. Canaan Dolomite occupying the core of an anticlinal of Riga Schist at the south end of area No. 6. The view looks southeast. A, Outcrop of Riga Schist. B, Canaan Dolomite. C, Riga Schist.