INDEX TO GEOLOGY OF THE NORTHERN ADIRONDACK REGION 451 



Illaenus arcturus, 366 a . 



bayfieldi, 3G6 1 . 



incertus, 366'. 

 Umenite, 304 5 , 304 8 , 305 2 , 309 s , 32S 6 . 

 Intrusives. metamorphosed condition 



of, 340 8 -45 5 . 

 Iron ores, 311 a . 



Joints, 404*, 412 1 -16 3 ; production of, 

 2S6«. 



Kaolin, 305 s . 



Kemp, J. F., cited, 297\ 298 T . 30G T , 

 308 s , 310 6 , 314 7 , 317 3 , 317 5 , 329 9 , 

 330°, 346 2 , 349 1 , 349 s , 350 5 , 393 3 , 

 395 1 , 395 s , 395 9 , 39G 9 , 397 8 , 397 s , 

 398*, 405 1 , 415 6 ; acknowledgments 

 to, 27P. 



Kolderup, cited, 339 1 . 



Labradorite, 304 4 , 304 7 , 309 7 , 31 1 5 , 

 32S 3 , 32S 6 , 329 s . 329*, 334 7 , 335 3 , 

 335 5 , 336*, 341 9 , 349 s , 351 6 , 39G 2 . 



Lake belt, 429 2 -30 3 . 



Lakes, 445 5 -48 7 . 



Leeds, cited, 351 8 . 



Leptaena fasciata, 366 s . 



Lichas minganensis, 3GG 9 . 



Limestones, 273 3 , 295\ 



Limonite, 395 s . 



Lingula hnronensis, 36G 2 . 



Little Falls fault, 431 5 . 



Lorraine formation, 384 s -86 l . 



Lowville (Birdseye) limestone, 283 5 , 

 369*-71 4 , 391 1 . 



Maclurea magna, 366 s , 3G6 6 , 367 1 . 



Magnetite, 300 2 , 300 8 , 313 5 , 319 4 , 325 4 , 

 326 7 , 328 3 , 328 s , 328 s , 334 4 , 335 7 , 

 336 s , 337 3 , 348 6 , 349 2 , 351 7 , 352 4 , 

 352 s , 354 s , 35o 2 , 356 3 , 396 6 , 398 2 ; 

 titaniferous, 304 5 , 306 7 . 



Melilite, 39S\ 



Mesozoic base-leveling, 423 4 -25 2 . 

 Mesozoic history, 289 3 -90 c . 

 Metamorphosed condition of the in- 



trusives, 340 8 -45 5 . 

 Microcline, 299 9 , 300 2 , 348 9 , 356 3 . 



Microperthite, 297\ 299 9 , 3O0 2 , 304', 

 313\ 313 s , 313 7 , 313 s , 319 s , 320 s , 

 321', 32G 7 , 336*. 338 7 . 339 s , 34S* 5 , 

 352\ 352 s , 352 7 , 356 3 . 



Mohawk river, 43S 3 . 



Mohawk valley, faults, 410 3 , 431 1 . 



Monadnocks. 426 3 . 427 : . 



Monchiquites, 396 3 . 



Monticulipora, 367*. 



Monzonite. analyses, 339". 



Morris granite, 326 5 -27 s . 



Muscovite, 304 7 , 34S 7 . 



Norite, analyses, 332", 334 s . 



North plain, 433 J -34\ 



Northern hills and valleys, 434 4 -37 5 . 



Ogilvie, cited. 437\ 440 : . 446 5 . 



Oligoclase, 304*, 313 6 , 339 9 . 



Olivin, 328 s , 349 2 . 349 5 . 351 7 , 396 2 , 



396 7 , 398 2 . 

 Olivin diabase, analyses. 351 3 . 

 Ophicalcite, 295 7 . 

 Orthis sp., 365 9 , 366 7 . 



costalis, 366 1 . 



disparilis, 367 2 . 



perveta, 366 s , 367 1 . 



platys, 366 8 . 



porcia, 367*. 

 Orthoceras sp., 365 9 , 366 7 , 367 3 . 

 Orthoclase, 300 2 , 313 8 . 334\ 335 7 , 



336 s , 33T 2 , 348', 352 s . 

 Orton, cited, 364 8 , 380 s , 384 s . 388 s . 

 Oswegatchie river, 439 1 . 

 Ottawa gneiss, 302 9 . 

 Ouachitite, 396 s . 



Paleocystites tenuiradiatus, 366 s . 

 Paleozoic changes of level, 2S5 2 -86 2 . 

 Paleozoic disturbances, 286 2 -87 7 . 

 Paleozoic erosion, 288"-89 2 . 

 Paleozoic faults. 405 6 -12\ 

 Paleozoic history, early. 279 4 -85 2 . 

 Paleozoic igneous activity. 287 7 -SS 5 .* 

 Paleozoic igneous rocks. 394 8 -99 4 . 

 Paleozoic oscillations of level, early, 



summary of, 386 9 -94 7 . 

 Paleozoic rocks, 354 2 -99 3 . 



