INDEX. 



509 



Stratigraphy of Crystal Falls district 25-29 



Structure of Crystal Falls district 25-29 



plate of 160 



of Mansfield formation 64 



Sturgeon quartzite described xviii, 398-405, 430-431 



correlation of xxv, xxvi 



distribution of 398-399 



folding of '. 399, 400 



intruded by granite 426 



of Felch Mountain range described 398-405 



of Menominee district, correlated xxv, xxvJ 



of Michigamme Mountain and Fence River 



areas described 430, 431 



relations to Archean xix, 398-401 



relations to mica-schist 392 



relations to Eandville formation xix, 407, 430, 431, 434 



relations to Upper Huronian sxii 



thickness of xvii, xviii, 399-401, 431 



topography of 398-399 



Sturgeon Eiver 330,376,386,401,458,485 



described 334, 335 



Sturgeon Eiverdam 474 



Sturgeon Kiver tongue described 458-487 



Algonkian of, described 471-482 



Easement Complex of, described 463-471 



conglomerate of xvni, xxiv 



described 473-479 



literature on * 459-461 



relations to Felch Mountain rocks 462 



relations to Louver Marquette , 462 



Sun Dog Lake 335 



Sweden, granite of 44 



Syenite, distribution of 13 



Synclinal trougiis, concentration of ore in 183, 184 



Syncline, Crystal Falls, described 158-161 



determined by magnetic observations. .. 366-370, 372, 373 



of Groveland formation 416 



Syracuse, N. Y.,picrite-porphyry at 219 



T. 

 Table of succession in Marquette, Crystal Falls, and 



Menominee districts xxv, xxvi 



Table of iron ore shipments of Crystal Falls area. . , Op. 186 



Talc from bronzite 238 



plate of 306 



TeaIl,J.J.H.. on ellipsoidal structure 118,123.124 



on plutonic rocks 222 



Test pits in Manstield ore deposits 67 



Timber of Crystal Falls district 13,36,37 



Timbering of mine , 185 



Titanic iron altering to sphene 144, 146, 170, 193, 239 



altering to rutile 170,193,239 



of basic dikes 47 



of biotite-granite 192, 193 



included in biotite 404 



included in chlorite 146, 404 



included in quartz 146 



of quartzite 404 



Thonschiefernadeln 93, 205 



Thiiracb, on alteration of staurolite 196 



Tobin Lake 164 



Tonalite 229 



comparison with Adamello tonalite 230 



Topography by Lake Superior Survey 22 



by U. S. Geological Survey 22 



influenced by intrusive rocks 54 



Topography, sketch of 46 



of Algonkian 333 



of Archean 38, 39, 333, 386, 387 



of Crystal Falls district 13,29-31,331-333 



of Deer Eiver Valley 29 



of greenstone 333 



of Groveland formation 415,416,446-438 



of Hemlock formation 73,74,440-441 



of Huronian rocks, plate of 160 



of intrusives 46, 54, 333 



of Mansfield formation 54,438,439 



of Eandville dolomite 50, 40G-408 



of Sturgeon q uartzite 398-399 



of Upper Huronian 1 55-156 



Tornebohm, , referred to 256 



Tourmaline included in quartz 420 



of mica-schist 196 



of muscovite-biotite-gneiss, plate <if 298 



of sedimentary inclusions in granite 197 



penetrating feldspar 57 



penetrating quartz 57 



Town.4lN., R.29 W 14,375,460 



41 N.,K.30'W 375,377,460 



41 JS^, E. 30 W., section 2 385 



section 3 385 



41Is".,E.31 W 14 



41N.,R.31 W., section 16 31 



section 25 377 



41N.,E.32"W 14 



41 N., E. 32 W., section 12 31 



section 33 190 



42N.,R.27 W -...458,460 



42N.,E.27 W., section 6 459 



section 7 ^ 458, 459 



section 17 458 



section 18 458 



42 N.. E. 28 W 374, 376, 377, 458, 460, 472 



42 N., R. 28 "W"., section 2 472 



section 3 46O 



section 4 460 



section 6 430 



section 7 459, 462, 463 



section 8 459,460,462,463 



section 9 476 



section 10 475 



section 11 476 



section 14 , 469 



section 17 458,461,467,474,482,485 



section 18 458,482 



section 19 463 



section 21 377 



section 29 399 



section 31 399, 407, 412, 413 



section 32. . . 374, 377, 378, 381, 385, 399, 412, 416, 423, 424 



section 33 374^ 



377, 381, 386, 367, 399, 412, 416, 418, 423, 424, 426 



42 N., E. 29 "W" 14, 329, 374, 375, 376, 377, 458, 460, 472 



42 N., R. 29 W., section 1 458, 480 



section 3 458,459 



section 7 476 



section 12 459, 462 



section 13 459,469 



section 22 460 



section 23 46O 



section 24 460 



section 26 46I 



