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R. A. DALY THE OKANAGAN COMPOSITE BATHOLITH 



granodiorite (figure 8). Moreover, the granodiorite was not introduced 

 by any system of cross-faults or peripheral faults dislocating the sediment- 

 ary rocks. Owing to the special attitudes of the latter, the strike and dip 

 of the beds would be peculiarly sensitive to such dislocation. The fault- 

 ing actually displayed in the Cretaceous beds is strike faulting and was 

 completed before the granodiorite was intruded (figure 7). The igneous 



Figure 11. — Plunging Contact Surface between intrusive Granodiorite and Cretaceous 



Formation. 



Drawn from a photograph taken on the south side of the Castle Peak stock, near the 

 point "D," figure 7. View looking east. Contact shown by heavy line, right center of 

 view. Granodiorite on left, Cretaceous formation on right. The vertical distance be- 

 tween the two ends of the contact line as drawn is 800 feet. The highest summit is 

 Castle peak. 



body is thus neither a bysmalith nor a chonolith. The magma entered 

 the tilted sediments, quietly replacing cubic mile after cubic mile until its 

 energies failed and it froze in situ. 



Not only so ; the superb exposures seen at many points in the deep can- 

 yons trenching the granodiorite illustrate with quite spectacular effect the 

 downward enlargement of the intrusive body. At both ends and ou both 

 sides of the granodiorite body the steep mountain cliffs exhibit the mini- 



