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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 74 



building of the motor road, as long, level and straight sections were 

 readily surveyed and fine gravel was at hand for surfacing the 

 read bed. 



Fig. 17. — Ilhistrating a thrust fault. The 1)ecldt'd Hmeslones have heeii 

 dragged and bent upward on the west (left ) side of fault, the plane of which 

 slopes northeast at about 45°. The thin layers of limestone above the thick 

 strong layer which slid over the limestones beneath are broken and crowded 

 against the massive bed on the upper side of the fault. 



f.ocality: North side of the Banff-Windermere motor road a])out one- 

 half mile (.8 km.) below Radium Hot Springs, Sinclair Canvon, British 

 Columbia, Canada. (Mr. and Mrs. C. IX W'alcott, I9-'-^) 

 Xote face in u]ipcr left corner. 



A view in the forest section of the Kootenay \'alle\- is shown by 

 figure 20, and a more dif^cult section for road building by figures 



