INDEX. 



583 



Pago. 



Azoic quartzite 27 



Azoic rocka, origin of 38-40 



Azoic series 46, 47, 64 



characterizatiou of 27 



intrtisives in 31 



occurrence of ores in 31 



{See Azoic system.) 



Azoic aystera 35,71,118, 120,127 



composition of 26, 29 



divisibility of 38-40, 44. 61, 99, 127, 128, 135-136 



members of 55 



origin of 20,29 



[See Agnotozoic, Algonkian, Archean, Azoic, 

 Pre-Cambrian series.) 



B. 



Bad River, "Wisconsin 56 



Bancroft Lake. {See Lake Bancroft.) 



Banded Mona schists 154, I'jO, 158, 159,161 



compoaitiou of 157 



described 156-157 



origin of 156.157-158 



structure of 157 



Banding of amphibolc-scbist 207 



of Clarksburg sediments 468-469, 472, 474, 478 



of Clark.sburg tufts 474 



of feldspatbic biotite-schist 196-197 



of iron-bearing formation 531 



of jaspilite 80 



of j asper and ore 59 



of Kitchi scbists 164 



of micaceous schist 192-193, 194, 199, 200-201, 203 



of Mona schists 156 



of nuiscovite-schist 195 



of Palmer gneiss 212,213 



Bannan, Benjamin. {See Baddou, S. H.) 



Barito at Lucy mine 148 



in iron ore 91 



Barnum mine 126, 386. 396, 398 



Barron mine 125,386,387,412.432,433 



Basal conglomerate 263, 



275, 276, 278, 287, 294, 29S, 299, 301, 

 303. 305, 307, 311, 312, 313. 360, 412, 

 413,420, 429, 430, 431, 432, 433, 527, 

 528, 534, 536, 538, 558, 559, 564 



described 223,224, 



225, 226, 234, 238, 239, 240, 259, 264, 270, 



271,289,295,300, 411, 442, 533, 543, 557 



of Wewe slate, figure of 259 



Basal conglomerate-quartzite-q u a r t z - s c h i a t of 



Menominee district 576 



Basal quartzite 50] 



of Menominee district 576 



Basal rock 



Basalt 25, 78, 155, 218, 485, 507, 508, 522, 525 



Base level 561 



Basement Complex 31, 127, 



130, 136, 223, 256, 264, 270, 299, 311, 312,421, 

 422, 428, 429, 430, 435, 437, 450, 554, 557, 564 



constitution of 141, 150 



contact with Lower Hurouiau 143 



denudation of 230, 537, 555 



described 149-220, 555-556 



distribution of 150 



isolated areas of. (See Archean islands.) 



mashing of 239 



Basement Coini>lex, name proposed 112 



reasons for name ] 50 



relations between members of 150 



relations to Algonkian 135, 149, 150 



relations to Mesnard formation 230, 231 



relations to Goodi'ich quartzite 411 



subdivisions of 149 



(See Archean, Laureiitian, Northern Complex, 

 Southern Complex.) 



Basic dikes in Northern Complex 150, 178-181 



diabase dikes 178-180 



opidiorite dikes 178, 180-181 



diorite dikes 178, 181 



Basic lavas 154, 155, 16O 



Basic massive rocks, origin of 74 



Basic Mona schists 154-159 



banded varieties of 156-158 



dense varieties of 154-156 



(See Mona schists.) 



Basic schists in Basement Complex 150 



in Northern Complex 151,152, 154-159, 162-167 



Basic tuflfs 100, 163, 169, 189 



(See Clarksburg series, Igneous rocks in South- 

 ern Complex, Kitchi schists, Mona schist, and 

 Tufts.) 



Batholites in Marquette series 572 



Bayfield, H. W., on general geology of Lake Superior 



region 8-9 



referred to Q 



Bayley, W.S., on geological explorations and litera- 

 ture of Marquette district 5-148 



on Basement Complex of Marquette district 149-220 



on Clarksburg formation 460-484 



on igneous rocks of the Marquette district 487-522 



referred to 2 



Beaeonite, described 140 



Beaufort mine 127 



Bigsby, J. J., on general geology of the Lake Su- 

 perior region 34 



on Azoic rocks 39-40 



referred to 6. 71 



Bijiki river 409,416,423,434 



Bijiki schist 409, 444, 445, 452, 554 



analysis of 418 



demidation of 417 



described 416-420 



development of 565 



relations to Goodrich quartzite 411,419 



relations to Michigamme formation 419 



Biotite-granite, analyses of 202 



composition of 171 



in Northern Complex 171-174 



mortar structure in 174 



mosaic in 173 



origin of 175-176 



structnre of 172, 173-174 



Biotite from feldspar , 2G5, 



289, 318-319, 327-328, 422, 438, 450, 458 



from griinerite 423 



from plagioclase 501-502 



of biotite granite 172 



of biotite-scbist 196 



of chlorite-schist 514 



of Clarksburg formation 472, 477, 478, 479, 486 



of feldspathic biotite-scbist 196-198 



of granite 526 



