334 



R. A. DALY THE OKANAGAN COMPOSITE BATHOLITH 



venient to adopt a special name for 

 section, figure 2, shows the units in 



Osoyoos LaJu. 



Sutulkcbtrveen, River 



AshnoUo RCver 



V9h-£ 



Pasayten, River 



do 



lifl 



sis 3 



« - a - 

 § S 2 g 



a ^ m a 



a ^ t-> +- 



.g «S oi ci 



CCUPhO 



"ill 



10 <r> co t- 



1 8 

 •S.3 



. o 

 « a> 



© .2 



•M, ° 



* 2 



© ti 

 ° ft 



5 «1 P3 tf 

 1 II I 



I I 



O C3 

 0J © 



2 o 



03 fl O 



J3 to ej 



o «J w 



02 Oi 



eS O 



a- 



O 05 



O PQ 



1 I 



.2 2 



<D i 



. O 



S 5 



.O 03 



S3 ® 



s -* 



c s 



^ o 



02 U 5 rn 



each unit. The diagrammatic cros's- 



their relative positions. 



The most easterly component 



body occupies both slopes of 



Osoyoos Lake valley; it is the 



southern part of a great batho- 



^ lithic mass of granodiorite and 



© may be called the Osoyoos batho- 



| lith. The most westerly unit ex- 



■2 tends from Pasayten river to 



t within a mile or so of Cathedral 



| peak. It is also a batholith of 



%> granodiorite and seems to com- 



| pose the cliffs of the conspicuous 



S, mount Eemmel 5 miles south of 



2 the boundary. This mass may be 



5 called the Eemmel batholith. lin- 

 es 



I mediately tu the eastward of the 



5 Remmel a third large batholith, 



Z this time composed of a quite dif- 



H ferent rock, true biotite granite, 



.2 underlies all of the belt as far as 



•~ Horseshoe mountain, on the divide 



s between the Ashnola and main 



« Similkameen rivers. This mav be 



■3 called the Cathedral batholith — 



3 



| named after the fine monolithic 



| mountain occurring within the 



« limits of the granite. The fourth 



"3 principal unit lies between the 



«> Cathedral and Osoyoos batholiths ; 



£, it is composed of a batholithic 



.2 soda-rich hornblende-biotite gran- 



S. ite which is trenched bv the deep 



•S valley of the Similkameen river, 



.2 and an appropriate name for it is 



| Similkameen batholith. These 



j four principal units make up five- 

 sixths of the whole area here de- 

 scribed. 



