GENERAL CORRELATION TABLE. 
Clark and Lewis range 
49th Parallel. 
Rocky Mountains, B.C. 
Purcell range, B.C. 
Coeur d’Alene district, Idaho. 
Cabinet range, Montana. 
R. A. Daly, G.S.C. Mem. 
38, 1913, p. 97. 
The correlation of these two series by the author is 
based on sections described by Daly (G.S.C. , 
Memoir 38, 1913) and subsequently modified by 
the author. 
F. C. Calkins, U. S. G. S., Prof. 
Paper 62, 1908, p. 25. 
F. C. Calkins, U. S. G. S., Bull. 
384, 1909, p. 40. 
Lowest Middle Cambrian. 
Cambrian. 
Unconformity. 
Erosion surface. 
Roosville, 1 , 000 feet. 
. 
Phillips, 500 feet. 
Erosion surface. 
Erosion surface. 
Kintla, 800 feet. 
Sheppard, 600 feet. 
Gateway, 2,025 feet. 
Gateway, 1,000 feet. 
Pre-Cambrian 
Purcell Lava. 
Purcell Lava. 
Purcell Lava. 
Erosion surface. 
Shales and sandstones 10,000 
feet. 
(Beltian). 
Siyeh, 4, 100 feet. 
Siyeh , 4,000 feet. 
Siyeh, 4,000 feet. 
Striped Peak, 1 , 000 feet. 
Striped Peak, 2,000 feet. 
Grinnell, 1,600 feet. 
Appekunny, 2, 000 feet. 
Wigwam, 1,200 feet. 
MacDonald, 2,350 feet. 
Hefty, 775 feet. 
Kitchener, 4,500 feet. 
Wallace, 4,000 feet. 
Blackfoot, 5,000 feet. 
Altyn, 3,500 feet. 
Altyn, 650 feet. 
Creston, 5,000 feet. 
St. Regis, 1,000 feet. 
Revett, 1, 200 feet. 
Burke, 2,000 feet. 
Ravalli, 8,000 feet. 
Aldridge, 8,000 ± feet. 
Prichard, 8,000 feet. 
Prichard, 10,000 feet. 
56815— p. 90b. 
