INDEX. 



459 



R. 15 ■W.,T. 62 N., section 20.. 202,295 



section 22-. 373 



section 27 200 



section 28 201 



section 35 36,131 



section 36 131 



R. loW., T. 63N 435 



sections 34, 35 ■ — 433 



R. 16 W., T. 60 3Sr 429 



R. 16 W., T. 61 N" ,. 277,429 



R. 16W., T. 62N... '.... 277 



R. 16W., T. 63N... 277 



Ransome, P. L., cited on spherulitic rocks of Cali- 

 fornia - 142 



Beibungs-breccia, occurrence of. 137,178 



Belief, features of 3^35 



Biversof the district 40-41 



Boa ds in the district, character of 53-54 



Robinsons Lake, rock banding near 195 



Rohn, Oscar, aid by 31 



Rose Lake, view at 392 



Round Lake, metamorphosed slates near 350 



Routes of travel in the district, character of 56-63 



Bove slate, age of 33,396,406 



deposition of, time of 442 



distribution of 391 



exposures of 391 



gabbro contact with 394 



metamoi-phism of 393-394,419 



naming of , 390 



occurrence of , 25 



petr ogi'aphic characters of 392-393 



relation of, to Duluth gabbro 407 



to Keweenawan dolerite and gabbro 395 



section thi'ough, showing intercalated Logan 



sills 400 



stratigraphic position of 26,33 



structure of 392 



thickness of 396 



topogi'aphy of 391-392 



Royal Commission on Mineral Resources of Ontario, 



report of, cited 1. 94 



S. 



Saganaga Lake, arkose at.. 270 



conglomerate at 85,274,309 



Ely greenstone and Ogishke conglomerate at, 



contact of sll 



geology of region near 65 



granitoid and gneissoLd rocks at 87 



granite at, correlation of 65 



dikes in 115 



distribution of 266 



exposures of 266 



metamorphic effects of 273 



Ogishke conglomerate contact with '274 



petrographic characters of 266-267 



relations of 268-273 



topography of 266 



Ogishke conglomerate at 85-86,274,309,311 



relation of topography and geology at 434 



syenite at 101 



Upper Kewatin rocks at 119-120 



Saganaga gneiss, stratigraphic place of 89 



Saganaga granite, relation of, to Kewatin rocks ■- . . 109 

 to Ogishke conglomerate 305 



Saganaga syenite, age of 101 



Saganaga syenite conglomerate, origin of 94 



St. Cloud granite, age of 76 



St. Louis River, geology of region near 73 



St. Louis River, rocks near _ 70 



St. Paul and Duluth Railroad, gabbro along. 402 



Sardeson, F . W. , report of, cited 116-117 



Savoy iron mine, reference to 217 



Sawtooth Hills, location of 38 



Sawtooth Mountains, origin of name of 19 



Schistose greenstone, occurrence and character 



of 153-154 



Schists, occurrence of 253-254 



Scranim.ers in mine using caving system, view 



showing.. _- 240 



Seagull Lake, syenite at 86 



Seagull syenite conglomerate, origin of 94 



Sericite schists, occurrence of 252 



Sibley iron mine, reference to 217 



Silver City, location of. 53 



Silver-bearing rocks,yermilion Lake, occurrenceof- 67 



Slate, folded, plate showing 178 



Slaty cleavage, plate showing 178 



Smyth, H. L.. and Pinlay, J. R., citation from, on 



iron ores, origin of 232 



on Ogishke conglomerates, origin of.. 286 



on jasper at Soudan Hill 230 



on pseudo-conglomerates 252 



on schist at Lee mine... 323 



on slates of Vermilion district. 281 



on Vermilion range, geology of 111-112 



figure cited from 231 



Smyth, H. L., Bayley, W. S., and Van Hise, C. B., 



cited on iron ores, origin of 232 



Snowbank granite, age of 406 



distribution of 361 



exposures of 315,361,364 



intrusion of 441 



metamorphism of slates by 341 



occurrence of 24,120 



petrographic characters of 361-362 



relations of, to Duhith gabbro 363-364, 407 



to Keweenawan gabbro 363-364 



to Lower Huronian sediments 363 



topography of 361 



Snowbank Lake, conglomerate at and near .. 305,315,318 



geology of region near 110-111 



granite at and near 87,110-111,315,364 



Keweenawan gabbro at 315 



Knife Lake slates at 341 



Lower Huronian sediments at 298, 300 



metamorphism at and near 315,350 



Soil of the district, character of 50 



Soudan, graphitic slates at 180 



iron-ore deposits at 23,215,234-235,243,244 



location and population of.. 52 



mining methods at 234-239 



sections in mines at 235, 236, 237, 238 



Soudan formation, age of 33, 195-196, 200 



character of 179-188 



dikes in 356 



distribution of 172-173 



divisions of 179 



exposures of 173-175 



features of 21-22 



folding in 175-177,210,212 



figure showing 205 



