INDEX. 



453 



Granite, distribution of 90 



relations ot 254-256, 259-261, 264-265, 268-2T3, 282-283 



Kawishiwi River area, distribution of 263-264 



exposures ot 264 



petrograpliic characters of 264 



relations ot 264-265 



Knife Lake area, occurrence of 24 



Moose Lake area, distribution of 263-264 



exposuresof 264 



petrograpliic characters of 264 



relations of 264-265 



Saganaga Lake area, distribution of 366 



exposuresof 266 



nietamorphic effects of 273 



petrographic characters of 266-267 



relations of 268-273 



topography of 266 



Trout, Burntside. and Basswood lakes areas, age 



of 261 



distribution of.. 



exposures of 



foldingin 262 



petrographic characters of 259-260 



relations of 260-261 



topography of 259 



Vermilion Lake area, distribiition of 247 



exposures of 247-248 



foldingin 250-251 



petrographic characters of 248-250 



relations of, to adjacent formations 254-257 



282-283 



topographyot 248 



structure and metamorphism of 251-254 



Grant, U. S., citation from, on Cacaquabic granite. 364 



365,366,367 

 on contact metamoi'phlsm in Minnesota . . 125-127 

 on cordierite at Gobbemichigamma Lake. . . 346 



on Duluth gabbro 401,402 



on dikes in Duluth gabbro 423 



on gabbro plateau of northeastern Minne- 

 sota 37-38 



on glacial lakes .'.. 430 



on granitic areas in Minnesota 107-109 



on Gull Lake rocks 312 



on Gunflint formation. 890 



on Gunflint Lake area 38, 93, 109-110 



on iron ores of Gunflint beds 385 



on jasper in slates at Pickle Lake 325 



on Kawishjwi River 41 



on Logan sills 399 



on Mesabi iron range, geology of 114-116 



on Logan sills and Duluth gabbro, relations 



ot 410^16 



on metamorphism 125-126 



on muscovado 343 



on Minnesota geology 118-125 



OL' Ogishke conglomerate 324 



onSeganaga Lake gi'anite 2&5, 267, 269 



Grant, U. S., 'Winchell, N. H., and Elftman, A. H., 

 cited on geology of the Vermilion dis- 

 trict. 117 



Graphitic rocks, ocurrenceof. 179-180 



Great gabbro, stratigraphic place of 100-101 



See also Duluth gabbro. 



Green, R. B., table prepared by, showing coarseness 



of iron ores... 185 



Greenalite, occurrence of 190 



Greenstones, amy gdaloidal 



belts of 195-196 



ellipsoidal 144-150 



deformation of 148 



inclusions of, in iron-bearing formation 197 



relations of, to jasper 200-210 



schistose, occiirrence and character of 153-154 



spherulitlc 141-144 



Gregory, H. R,, cited on ellipsoidal structure in 



Maine andesites 144 



Gregory, J. "W., and Cole, G. A. J., cited on spheru- 

 litlc structure 146 



Gi*unerite, origin of 187 



Gull Lake, granite and gi-eenstone at 274 



greenstone and conglomerate in contact at 324 



Gunflint formation, age of 33,406 . 



character of 25,377-387 



deposition of. time and conditions of. 442 



distribution of.. 375 



equivalence of Biwabik formation to.. 25,377-379 



exposui'esof 376 



granules in, photomicrograph showing 382 



iron ores of, analyses of 385 



iron-bearing rocks of 377-387 



metamorphism of 419,444^445 



petrographic characters of 377-387 



relations of, to adjacent formations 387-390 



to basic dikes cutting 390 



to Duluth gabbro 407 



to Keweenawan gabbro 389-390 



to Knife Lake slates .388-389 



to Lower Huronian series 388-389 



to Ogishke conglomerate. 388-.389 



stratigraphic equivalent of 25 



stratigraphic position of 33 



structure of 73,376-.377 



thickness of 390 



topographyot 376 



Gunflint Lake, Animikie rocks at 74, 84, 86, 93 



argiUitesat 86 



banded rocks at.. 149 



geology of region near. 65,73,109 



greenstones near 118 



Gunflint formation at 387 



hematite at 72 



Huronian rocks at 71 



iron-ore deposits at 213 



jasperat 72 



Keewatin slates at. 93 



Logan sills at .399 



sections at 392,400 



syenite at 91 



Vermilion schist at 93 



topography near. 38.39 



HC. 



Hall, C. W,, citation from, on Archean rocks of Min- 

 nesota 116-117 



on geology of the district 70-71 



on granites of the Northwestern States 90 



Hanchett, A. H., and Clark, Thomas, citation from, 

 on occun'ence of hematite near Vermil- 

 ion Lake 213 



on route from Grand Portage to Eainy Lake. . . 57 



report made by, on geology of Minnesota 66-67 



Harvey, H. B., iron-ore outcrops discovered by 215 



