ILLUSTRATIONS 



MAPS 



Geological Map of Tunnel Area, facing page i6. 

 Profile Map of Tunnel, facing page 20. 



FIGURES 



1. Index map of Connecticut. Shaded portion shows area included in this 



report. 



2. Map showing watersheds in area discussed. — . — . — , Watersheds ; AA, 



Tunnel line; — , Line of diamond drill holes. (See Fig. 3.) 



3. Cross Section of Bantam Lake and Cranberry Swamp. 



PLATES 



I. a. View looking up the Shepaug River Valley, soon to be turned 

 into a reservoir. Tunnel entrance to the right of the shacks. 

 Photograph by B. H. Walden. 

 b. View looking into entrance of tunnel from across the Shepaug 

 River, along the line of the proposed dam. 



II. a. View Looking down the Shepaug River from below the site of 

 the proposed dam. Part of the dump from the tunnel excava- 

 tion is shown at the left. 

 b. View showing the massive character of the Brookfield diorite at 

 the entrance to the tunnel east of the Bantam River crossing. 



III. a. View looking across the narrows of Bantam Lake from Dempsey's 



Point to Marsh's Point. The tunnel passes under the lake 

 between these points, 

 b. Valley of the West Branch of the Naugatuck River above the 

 present Morris Reservoir and just below the tunnel outfall, 

 where the waters of the Shepaug River will be brought through 

 the tunnel and impounded. 



IV. Irregular contact between the Berkshire schist and a pegmatite dike 



in the tunnel, 1000 feet east of the tunnel entrance at the 

 Shepaug River. Two drill holes are shown in the schist at 

 the left. Photograph by B. H. Walden. 



V. a. Quartz monzonite porphyry dike cutting the massive diorite in 



the tunnel under Bantam Lake. Photograph by B. H. Walden. 



b. Pegmatite lenses parallel with the flat dipping foliation of the 



Hartland mica schist, 1000 feet east of the southernmost corner 



in the tunnel. Photograph by B. H. Walden. 



VI. a. Hartland mica schist showing crystalloblastic texture. Crossed 

 nicols X 25. 

 b. Berkshire schist from west end of tunnel showing curved biotite 

 flakes (B) and quartz (Q) partly granulated. An incipient 

 cataclastic texture superimposed upon a crystalloblastic texture. 

 Crossed nicols x 25. Photograph by D. Selchow. 



VII. a. Brookfield diorite near center of tunnel showing texture of 

 crystallization. (H.) hornblende; (B) biotite; (P) plagioclase 

 (mostly andesine). Plane polarized light x 40. 



