REPORT OF TEE CHIEF ASTRONOMER 



299 



SESSIONAL PAPER No. 25a 



Statute Miles 



Figure 20. —Diagrammatic map of summit granite stocks (large dots) with wide 

 aureole of contact metamorphism (smaller dots). The cross-cutting relation of 

 the stocks is illustrated. 



MONK 



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tVOLCANICS 



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Figure 21.— Section along line A-B of figure 20, on the same scale ; illustrating explanation 

 of great breadth of metamorphic aureole southeast of larger granite stock. Apophy3al. 

 dikes in roof of stock not shown. 



