INDEX TO GEOLOGY OP THE NORTHERN ADIRONDACK REGION 451 



Illaenus arcturus, 366\ 



bayfieldi, 3G61 



incertus, 366'. 

 Ilmenite, 304^ 304^ 305^ 309^ 328^ 

 Intrusives, metamorphosed condition 



of, 340^-45=. 

 Iron ores, 311". 



Joints, 404*, 412'-16'' ; production of, 

 286^ 



Kaolin, 395^ 



Kemp, J. F., cited, 297*, 298', 306', 

 30S^ 310", 314^ 317^ 317% 329% 

 330", 346=, 349S 349^, 350% 393% 

 395% 395% 395% 396% 397", 397\ 

 398% 405% 415"; acknowledgments 

 to, 271% 



Kolderup, cited, 339% 



Labradorite, 304% 304% 309% 311% 

 328% 328", 329% 329% 334% 335% 

 335% 336% 341% 349^, 351", 396=. 



Lake belt, 429=-30% 



Lakes, 445°-48% - 



Leeds, cited, 351% ' 



Leptaena fasciata, 366% 



Lichas minganensis, 366% 



Limestones, 273% 295% 



Limonite, 395^. 



Lingula buronensis, 366=. 



Little Falls fault, 431% 



Lorraine formation, 384^-86% 



Lowville (Birdseye) limeston"e, 283% 

 369*-71% 391% 



Maclurea magna, 366% 366% 367% 



Magnetite, 300% 300% 313% 319% 325% 

 326% 328% 328% 328% 334% 335% 

 336% 337% 348", 349=, 351% 352% 

 352^, 354% 355=, 356% 396% 398=; 

 titanlferous, 304% 306% 



Melilite, 398% 



Mesozoic base-leveling, 423*-25=. 



Mesozoic history, 289^-90". 



Metamorphosed condition of the in- 

 trusives, 340^-45% 



aiicrocline, 299% 300=, 348", 356% 



Microperthite, 297% 299% 300% 304", 

 313% 313% 313% 313% 319% 320% 

 321% 326% 336% 338% 339% 348% 

 352% 352% 352% 356% 



IMohawk river, 438*. 



Mohawk valley, faults, 410% 431% 



Monadnocks, 426% 427% 



Monchiquites, 396% 



Monticulipora, 367% 



Monzonite, analyses, 339". 



Morris granite, 326^-27% 



Muscovite, 304% 348% 



Norite, analyses, 332% 334% 



North plain, 433=-34% 



Northern hills and valleys, 434*-37% 



Ogilvie, cited, 437% 440% 446% 



Oligoclase, 304% 313", 339% 



Oli^^n, 328% 349=, 349% 351% 396=, 



396% 398% 

 Olivin diabase, analyses, 351=. 

 Ophicalcite, 295% 

 Orthis sp., 365% 366% 



costalis, 366'. 



disparilis. 367=. 



perveta, 366% 367% 



platys, 366% 



porcia, 367=. 

 Orthoceras sp., 365% 366% 367% 

 Orthoclase, 300% 313% 334% 335% 



336% 337=, 348^, 352«. 

 Orton, cited, 364", 380% 384% 388% 

 Oswegatchie river, 439^. 

 Ottawa gneiss, 302% 

 Ouachitite, 396% 



Paleocystites tenuiradiatus, 366*. 

 Paleozoic changes of level, 285=-86% 

 Paleozoic disturbances, 286=-87% 

 Paleozoic erosion, 2SS''-89=. 

 Paleozoic faults, 405"-12% 

 Paleozoic history, early, 279*-85=. 

 Paleozoic igneous activity, 287'-88% , 

 Paleozoic igneous rocks, 394'-99'. 

 Paleozoic oscillations of level, early, 



summary of, 386»-94% 

 Paleozoic rocks, 354=-99% 



