584 



IXDEX. 



Page. 



Biotite of gray wacke 265, 318, 319, 448, 453 



of greenstone 465. 485, 501. 502, 509-510, 5:18 



of greenstone-scbist 205 



of gruncritc -magnetite- scbist 391 



of hornblendic biotite-scbist 198 



of iron ore 374. 435 



of mica-scbist 457 



of miiscoTito-schist 395 



of quartz-schist 289 



of quartzite 300, 415. 421. 529 



of recomposed ore 441 



of scbist-conglomerato 442 



of tuff 474 



structure of 198-200 



Biotite-schist 289. 294, 415, 434, 436. 443, 464. 482 



(iSee BioLite-slate, Mica-sobist, Mica-slate.) 



Biotite-slate 290.434.436.455 



{See Biotite-schist, Mica-scbist, Mica-slate.) 



Birkinbine. J., on position of Marquette ores 114, 141 



referred to 7 



Blue mine 395 



Black ore jasper 549. 550 



Black slate 127.133 



Bosses in Basement Complex 555 



in Clarksburg series 460.461,485 



in Marquette series 142, 



487, 488, 518, 520, 522, 523. 571-572 



described 48&-506 



in Kegaunee formation 329 



in Xortbern Complex 151 



(See Acid bosses and Basic bosses.) 



Boston mine 126,377,424 



Bradisb, Alvah, on life of Douglass Houghton 9 



Breccia 88-^89. 254. 273, 274, 281, 309 ,310, 311. 321, 326, 327 



associated with diorite-scbists 86 



described 253 



in Clarksburg series 460, 464, 473, 476-480, 482, 484 



{See Chert-breccia, Eeibungsbreccia, Tuffs.) 

 Brecciated chert at base of Kona dolomite, plate of. 246 



in Kona dolomite, plate of 250 



Brecciated jaspilite of Jasper Bluff, plate of 358 



Brecciated Kona dolomite, plate of 250 



Brecciated slate 263 



Brecciation 260 



of Bijiki schist 424 



of ferruginous chert 361, 370. 380 



of gra ywacke 268 



of jaspilite 362,371,376,380,386,388,428 



of Kona dolomite 251 



of Marquette formations 570 



of Xoijaunee fomi.Vaon 378, 383, 385 



of quartzite 288 



of slate 271.281.282,304,317 



of Wewe slate, plate of 262 



{See Pressure effects.) 



Broken bluffs 301 



Brooks, T. B., on correlation of Marquette and Me- 



nomminee rocks 69 



on geology of Marquette district 48-57, 69 



on geology of Menominee district 69 



on Huronian granite 63 



on Laurentian rocks in Michigan 69 



on plications in jasper and ore 59 



on sequence of rocks in Marquettedistrict.- 51,57,64,65 

 on youngest Huronian rocks south of Lake Supe- 

 rior 63-64 



Brooks, T. B.. proposal of name Kevreenawan by 63 



referred to 1.6,34, 



40. 47, 48, 64. 66, 67, 70, 71, 72, 74. 75, 77, 79, 81 , 



82, 83, 86. 89. 98. 100, 102, 1!0. Ill, 118,125,130, 



139, 143,144, 500, 403,416, 538, 541, 542, 543,544 



with A. A. Julien, catalogue of Huronian rocks. 58 



Brook section 312 



Buflalo mine 117, 118. 327, 395 



{See Queen Mining Company.) 

 Burt, W. A., general geology of the Marquette dis- 

 trict 17-18,20-21 



referred to 6, 16, 17. 16, 48 



C. 



Calcareous rocks in Huronian series 65 



Calcite of greenstone 465. 473. 496 



of Kitchi schists 166 



of Mona schists 155,156. 157 



Calhoun, J. C, referred to 35 



Cambria mine 395 



Cambri:m series 112.123,134,135,136 



classification of 112,113 



unconformity with Keweenawan 135 



Cambriiin sandstone. {See Potsdam. Lake Superior 

 sandstone, Old red sandstone. Sandstone.) 



Camptonite 501 



Camptonite-like greenstone 505 



Canada..... 44,63.189 



Cannon mine 53,54,439 



Carbon of gray wacke 416 



of ferruginous rock 451 



of mica-slate 458 



of slate 273,446,447,565-566 



Carbonaceous shale 50, 67 



Carbonaceous slate , 108 



analy.sesof 446 



Carbonate of iron. {See Siderite, Ferruginous car- 

 bonate.) 



Carbonate-bearing beds 108,130,133 



Carp Kiver 5, 13, 



14, 16, 19, 21, 22, 23, 24, 25. 26, 27, 29. 35, 

 59. 60. 87, 222, 241, 257, 272, 282, 284, 2i^5, 

 294, 295, 296, 299, 303, 305, 307. 314, 571 



Cascade 55 



Cascade Brook 299, 312, 383 



Cascade formation 127-1 28, 135, 136, 137, 138-139 



relations to other formations 138, 139 



Cascade mine 86,125,128.312 



Cascade range 55, 



73, 115, 128, 137. 138, 298, 310. 332, 382, 383. 429. 557 



Cementation 573 



(5pe Veins.) 



Census Office report 109 



Champion 52, 76, 



192. 194, 331, 332, 389, 409. 416, 434, 435. 436, 444, 446, 

 452, 454, 455, 456, 460, 461, 473, 481, 483, 547, 563. 565 



Champion mine 89, 



94-95, 129. 139. 140. 142, 193. 396. 



399, 412. 434, 435, 525, 537, 538. 549 



Cha2ning,\r.F., on geology of Marquette district-. - 15-16 



referred to 6,21 



Chert 223,241,254,324,334 



and jasper, composition of 106-109 



and jasper conglomerate, described 413-414 



enlargement of quartz grains in 100 



of breecmted dolomite 250 



