xxv i DEPARTMENT OF THE INTERIOR 



2 GEORGE V, A. 1912 



37. Plunging contact surface between intrusive granodiorite of Castle Peak 



stock and Cretaceous argillites and sandstones of Pasayten series. 



38. Plunging contact surface between intrusive granodiorite and Pasayten for- 



mation. 



39. Plunging contact surface, Castle Peak stock, south side. 



40. Intrusive contact between granodiorite and nearly vertical Pasayten ar- 



gillite. 



41. Diagrammatic section showing origin of a ' winter-talus ridge.' 



42. Illustrating two methods by which basic contact-shells in a stock or a dike 



might be formed. 



TABLES 



Page. 



I. Correlation of the Rocky Mountain Geosynclinal rocks. . . . 161 

 II. Showing general lithological character of the four standard 



sections in the Rocky Mountain Geosynclinal 167 



III. Showing composition of equivalent formations (Kitchener- 



Siyeh) 169 



IV. Showing composition of equivalent formations (Oreston- 



Altyn) 169 



V.- VII. Densities of formations in the Rocky Mountain Geosynclinal 173 



VIII. Correlations in the Rocky Mountain Geosynclinal 178 



IX. Walcott's correlations in the Belt terrane 182 



X. Correlation with Canadian Pacific Railway section 194 



XL Weight percentages of minerals in rocks of Moyie sills. . . . 235 



XII. Chemical analyses of phases of the Moyie sills 236 



XIII. Columnar section through the Moyie sills 237 



XIV. Analyses of sill granite and invaded sediments, Moyie sills. . 241 

 XV.-XVI. (Annulled in press.) 



XVII. Analyses of Rykert granite and related rock 287 



XVIII. Analyses of minettes 312 



XIX. Analyses of augite latites 325 



XX. Analyses of augite-biotite latites 327 



XXI. Analyses of hornblende-augite latites 329 



XXII. Comparisons among latites and monzonite 332 



XXIII. Chemical relations of Rossland monzonite , . 344 



XXIV. Comparison of basic syenite and average minette 357 



XXV. Analyses of missourite 368 



XXVI. Analyses of rhomb-porphyries and related rocks 406 



XXVII. Analyses of pulaskite porphyry and related rock 419 



XXVLTL Analyses of malignites and nephelite syenites 454 



XXIX. Showing chemical relation of Similkameen and Cathedral 



batholiths 463 



XXX. Analyses of members of Okanagan composite batholith. . . . 472 



XXXI. Correlations among members of Okanagan composite batholith 474 



