INDEX. 



497 



Page. 



Granite, contact with aedimentariea 194-198, 300 



plate of 298 



foliation of 287 



including sedimentary fragments 1D5 



intruded hy diabase 429 



intruding iron-bearing formation 376,381,426 



intruding dolerite 204 



intruding Felch lEountain range 426 



intruding gneiss 381 



intruding granite 429 



intruding Sturgeon formation 426 



intruding Sturgeon Eiver series 459 



Moribihan (Brittany) compared witb Crystal 



Falls granite 44 



of Arcbean xviii, 38, 45, 49, 428, 429 



described 40-43,387-389 



of Micbigamme Kiver 16 



of Sturgeon River 459, 464 



of Sweden 44 



porphyritic 40, 45 



pressure effects in 44, 194, 464 



relations to quartzite 376 



relations to other intrusi ves 194 



(See Biotite-granlte, iluscoTite-biotite-granite, 

 Granitite, Gneissoid granite.) 



Granite-porphyrj', sketch of 45 



Granitite 226 



described 40-43 



Granitic texture in diorite 223 



GranodiorJte, comparison with diorite of Crystal 



Falls 231 



Granophy ric texture 85 



Granular texture in hornblende-gabbro 240,244 



plate of 316 



in periodotite 250 



Granulation of feldspar 42, 169 



plate of 276,316 



of quartz 51, 90, 169 



Graywacke altering to actinolite-scbist 57 



altering to chlorite-schist 57, 166 



altering to mica-schist 57, 166 



brecciated hy intrusion 195 



intruded by granite 194 



plate of 298 



magnetitic of Upper Huronian 176 



of Mansfield slate 56,57 



of Sturgeon formation 431 



of Upper Huronian 166, 167, 168, 169-174, 176 



of sec.l9,T.46N.,R.32 W 27 



pressure etiects in 170 



recrystallization of . ., 195, 198 



plate of 298 



Great slate formation of Menominee district xsv, xxvi 



Great "Western mine, description of ore bodies at ... 182 



depth of 185 



fissuring of rocks 185 



location of 178, Op. 186 



table of shipments froiu Op. 186 



Green Bay, streams tributary to 31, 334 



Greenstone 14 



from diabase 484 



from diabase-porphyrite 484 



in conglomerate of Hemlock formation 442 



intrusive in Algonkian of Sturgeon Kiver tongue 482-485 



intrusive in Archean 38 



intrusive in conglomerate 475, 476 



MON XXXVI — 32 



Greenstone of Mansfield mine 63 



topography of 333 



Greenstone-schist from diabase 466 



from gabbro 466 



of Archean of Sturgeon Eiver f 465, 467 



Gregory, G. W., on ellipsoidal structure 118, 119 



Griffith Sc Nathaniel quarries, analysis of slate from. 61 



Grit altering to chlorite 168,169 



altering to muscovite 168,169 



Gro veland formation described xx. 415-423, 446-450 



correlation of (see Relations) xxv, xxvi 



distribution of 415,416,440-448 



folding of 448 



intruded by granite 426 



magnetic observations in 447,448 



origin of 423 



pressure effects in 449 



quartzites, resemblance to Mesabi chert 422-423 



relations to Arebean 416,424 



relations to Ajibik quartzite xxi, 449, 456 



relations to Hemlock fonnation xx, xxi, xxvi, 447 



relations to Mansfield fonnation 411,413,438,447 



relations to Negaunee formation xXi 449, 455 



relations to Randville formation xx 



relations to Upper Huronian xxii, 425 



thickness of xvii, 448 



topography of 415,416,446-448 



Groveland mine 413, 415 



Griinerite-schist of Groveland formation 418 



Giimbel, , on epidiorite 97 



H. 



Hiilleflinta, of Elfdalen, Sweden 92 



Hampton Tillage, N. T., analysis of slate from 61 



Harriman, F. J., referred to 22 



Hartz Mountain, analysis of spilosite from 207 



Hatch, F., on limburgite 221 



Hawaii, volcanics of 75, 120 



Hawes. G. W., on metadolerite 96 



Hedstrom, H., on micropoikilitic texture 83-84 



Hematite deposits of Upper Huronian described... 180, 182 



of Groveland formation 417,418,419,420,450 



of Mansfield ore deposits described 69-70 



of Paint River district 18 



Hematite from basic volcanics 152 



from siderite 168 



included in biotite 252 



included in quartz 419 



of amygdules 1 25 



of Bone Lake schists 151 



of clay slate 57 



of quartzite 450 



orientation of 418 



Hemlock formation described xx, 73-154. 440-446 



acid volcanics of, described 80-95 



classification of 79, 80 



correlation of xxv, xxvi 



distribution of 27,73,74,440-141 



economic prod ucts from 153, 154 



folding of 441 



metamorphism of xxi v, 446 



of Micbigamme Mountain and Fence River 



areas described 440-446 



origin of 27, 78 



pressure effects in xxr v, 75 



py roclastics of, described 135-148 



