TABLE OF FIELD ASSOCIATIONS ^3 



Table showing Field Associations of Alkaline and Subalkaline Eruptives — Continued. 



Region. 



Alkaline eruptives. 



Associated subalka- 

 line eruptives. 



Carbonate rocks cut by 

 alkaline eruptives. 



Ice River, British 

 Columbia, 



Nephelite syenite, 

 ijolite, cancrinite 

 syenite, urtite, 

 tinguaite. 





Limestones and dol- 

 omites of Beltian, 

 Cambrian, Devo- 

 nian (?), and Car- 

 boniferous (?). 



Kruger Mountain, 

 British Colum- 

 bia. 



Nephelite syenite, 

 malignite. 



Granodiorite, gab- 



bro, andesites, 

 peridotites, et- 

 cetera. 



Paleozoic limestone 



Kettle River, Brit- 

 " ish Columbia. 



Rhomb porphyry, 

 analcitic rhomb- 

 porphyry, alka- 

 line trachyte. 



Basalt, andesites, 

 gabbros, etcet- 

 era. 



Paleozoic limestone 



Rossland, British 

 Columbia. 



Monzonite, latites, 

 missourite. 



Basalts, andesites, 

 gabbros, etcet- 

 era. 



Carboniferous lime- 

 stone. 



Salmon River, 

 British Colum- 

 bia. 



Monzonite. 



Granite, basalt, 

 andesites, etcet- 

 era. 



Thick Paleozoic 

 limestones. 



Bearpaw Moun- 

 tains, Montana. 



Leucite basalt, mica- 

 trachyte, shon- 

 kinite, monzon- 

 ite, augite syenite, 

 nephelite basalt, 

 leucitite, tingua- 

 ites. 





Paleozoic and Meso- 

 zoic limestones and 

 dolomites. 



Highwood Moun- 

 tains, Montana. 



Syenites, monzo- 

 nite, shonkinite, 

 fergusite, m i s - 

 sourite, trachy- 

 andesite, gaute- 

 ite, leucite shon- 

 kinite, anal cite 

 basalt, minette. 



Basalt, d i r i t e , 

 granite p o r - 

 phyry, granite, 

 etcetera. 



Paleozoic and Meso- 

 zoic limestones and 

 dolomites. 



Judith Mountains, 

 Montana. 



Tinguaites (augite 

 phonolites). 



Diorite and gran- 

 ite, porphyries, 

 etcetera 



Ditto. 



