IInTDEX, 



607 



Pag«. 



Town49N., K.25'\V IS 



49 N., li. 33 AV. , aectiun 9 346 



Transgression quartzito 152 



Trap... 13,37 



of Preaquo Isle 9, 16, 22, 76 



(See Serpentine, Peridotite), 



Tufl's 155, 156, 158, 164, 165, 166, 167, 169, 302, 330, 564-565 



acid 160.169 



altered 153, 158, 159, 162, 201 



basic 160,163,169,189 



diabasic 124 



in Clarksburg series 460, 



461, 462, 464, 467, 468, 470^79, 483 



in Northern Complex 555 



in Upper Marquette series 142 



porphyry 159 



schistose 163 



structure of 464 



{See Greenstone-tutf, Tuffaceous beds, Tuffa- 

 ceous greenstone.) 



Tuffaceous beds in Marquette series 487, 514. .^»17 



Tuffaceous greenstone. {See Greenstone tuff.) 

 Tuffaceous Kitchi schists. (See Conglomeratic Kitchi 

 schists.) 



Twinning of orthoclase 526 



of staurolite 459 



U. 



beds and Kitchi 



Tnconformity between Al] 

 schists 



between Archean and Ajibik quartzite 



295, 296, 298, 300, 302, 303, 309. 



between Archean and Goodrich quartzite 



, between Archean and Huronian 44—45, 105, 



between Archean and Kona dolomite 



between Archean and Lower Huronian 



between Archean and Lower Marquette. 127, 135, 



between Archean and Marquette Ill, 190, 



between Archean and Meanard 223, 230, 



between Archean and Upper Marquette 



between Archean and Wewe slate 270, 276, 



between Azoic and Potsdam 



between Cambrian and Keweenawan 



between Cascade and Republic formations 



between Clarksburg series and graywacke 



between granite and fragmental series.. . 82, 111, 



between green schists and fragmental series 



between Goodricli quartzite and Ajibik quart- 

 zite 



between Goodrich quartzite and Lower Mar- 

 quette series 1 



between Goodrich quartzite and Negauaee for- 

 mation 



between granite and sandstone 9, 34, 



between Holyoke and Kepublic formations . . 



between Huronian and Laurentian 



between Huronian and Potsdam 



between iron formation and overlying conglom- 

 erates 



between Isbpemiug and Negaunee formations .. 

 335, 377, 378, 

 (SeeUnconformitybetween Lower and Upper 

 Marquette.) 



between jaspilito and quartzite 



between Keweenawan and Upper H 



between Lower Huronian and Uppe 



311,528 

 411, 536 

 113, 116 



256 

 135, 143 

 557-559 

 532-535 

 231, 239 



127 

 278, 282 



121-122 

 121-122 



411, 428 

 113, 116 

 138, 139 



115, 126 



334, 



384, 420 



Uuconformity between Lower Marquette and T'pp.^r 



Marquetto scries 1,3. 127, 402, 411, 562-563 



(-See Unconformity between Islipeming and 

 Nogaunco.) 

 between Marquette conglomerates and Palmer 



212 



between Potsdam sandstone and underlying 



series 112-113 



between pre-Cambrian formations 137 



between quartzite aud sandstone 59-60 



between sandstone and serpentine 60 



Unger, H., analyses by 202 



United States Geological Survey 7, 97, 123, 135, 141 



United States geologists iq 



Upper Huronian series go, 130 



characterized 135,143-144 



of Black Hills 457 



of Menominee district r)7Q 



of Penokee district 457 



{See Upper Marquette series.) 



Upper iron-bearing aeries 109-110 



Upper Marquette series 3, 288, 



311, 331, 332, 360, 399, 507, 528, 531, 532, 554 



area of 3 



constitution of 141, 145 



described 408^86, 535-538, 563-566 



denudation of 402 



folding of 402, 419 



formations of 4O8, 554 



name proposed 127 



of Republic trough, described 535-538 



relations to Lower Marquette 062-563 



relations to underlying rocks 536 



Upper Marquette transgression 552 



Upper slate. {See Michigamme formation.) 



Upper Peninsula of Michigan 55, 64 



geology of 27-34, 66-67 



Uralite of greenstone 492 



Uralite-diabase 494, 496, 505 



V-fold 441 



Yeins, ferruginous in Northern Complex 180-188 



in Southern Complex 217 



of acid rock in Basement Complex 150 



of chert 186,248,260,288,301,303,306 



of dolomite inKeri)entiue 186 



of granite in Basement Complex 150,151, 182,193,311 



of granite in green schist 256 



of granite in mica-gneiss 447 



of granite in Northern Complex 151 



of granite in Scmthern Complex 193 



of greenstone in granite 8.10 



of hematite 310 



of hornblende 9 



of iron oxide 260, 



268, 275, 281, 288, 290, 303, 304, 307, 308, 344 



of jaspilite 291 



of magnetite 310 



of martite 288 



of microcline in quartz 172, 173 



of porphyry in granite 10 



of quartz 223, 227, 228, 



260, 267, 268, 281, 290, 291, 304, 307, 308, 310, 311, 453 



of quartz in Kitchi schist 1G6 



of quartz in Southern Complex 151 



