496 



DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



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Figuke 36.— Contact surface between the Castle Peak grano- 

 diorite and tilted Cretaceous sandstones and argillites. Section 

 in wall of glacial cirque at eastern end of the stock, the point 

 marked " A " in Figure 35. Scale :— one inch to 185 feet. 



Figure 37. — Plunging contact surface between intrusive granodiorite of Castle Peak 

 stock and Cretaceous argillites and sandstones of Pasayten series. Drawn from photo- 

 graph, looking south. Contact shown by heavy line in middle of view. Granodiorite 

 on left ; sediments on right. The vertical distance between the two ends of the contact 

 line as drawn is 1,500 feet. Castle Peak on the left. 



