INDEX. 
927 
Page. 
Owen,  D.  D.,  on  Lake  Superior  sandstones .  299, 401 
on  Tennessee  geology 685, 715 
Owens  Island,  rocks  at 638 
Owiyukuts  Plateau,  rocks  near 780 
Owl  Creek  Mountains,  rocks  of 839,844 
Ozark  uplift,  rocks  of 738 
P. 
Pacific  coast,  pre-Cambrian  rocks  of 17, 18 
Sec  also  particular  States. 
Packard,  A.  S.,  on  Labrador 536,550 
Packsaddle  Mountains,  rocks  of 743, 745, 746 
Pagwachuan  River,  rocks  on 545 
Pahsupp  Range,  rocks  of 792, 795 
Pabtson  Range,  rocks  of 792, 793, 796 
Pakowagaming,  Lake,  rocks  of 407-408 
Palache,  C,  and  Jaggar,  T.  A.,  jr.,  on  Brad- 
shaw  Mountains  quadrangle.. .     777, 892 
Palaeotrochis,  origin  of 100 
Paleozoic  rocks,  range  of 86-87, 98 
subdivision  of 40 
Palisades,  rocks  at 198, 301, 303, 318, 626 
Palmer  area,  rocks  of 145, 173 
Palmer  gneiss,   character  and    distribution 
of 155-156,333 
correlation  of 176 
Palms  formation,  character  and  distribution 
of 337 
correlation  of 328-329 
Panache,  Lake,  rocks  near 421^22 
Panamint  Range,  rocks  of 798 
Papagallo  River,  rocks  on 765 
Paradoxides  slate,  occurrence  of 498 
correlation  of 318, 514 
Park  Range,  rocks  of 814-815, 
824, 828-829, 833-839, 845-848 
Parks,  W.  A.,  on  Nipigon  region 291 ,  292, 400 
on  Nipissing-Algoma  region 540, 550 
on  Rainy  River  district 281-282, 399 
on  Temiscaming-Cobalt  region 431-432,446 
Parks  Lake,  rocks  near 290 
Parrishville,  rocks  near 610 
Parry  Sound,  rocks  near 418, 420 
Passaic,  rocks  near 644 
Passamaquoddy  Bay,  rocks  near 496, 502 
Pauls  Lake,  rocks  of 531 
Pawruckaway ,  rocks  of 557 
Peabody  Bay,  rocks  on 529 
Peachbottom  slates,  correlation  of 671 
relations  of 657 
Peale,  A.  C,  on  Colorado  rocks 802, 
815, 818-819, 894, 895 
on  Green  River  district  rocks 781, 893 
on  Montana  rocks 853, 854, 855-856, 897, 898 
on  Wasatch  Mountains  rocks 783, 893 
on  Wind  River  Mountains  rocks 842, 896 
Pea  Vine  Mountains,  rocks  of 792, 794, 796 
Peck,  Jacob,  on  Georgia  rocks 689, 716 
Pecos  River,  rocks  of 743 
Pedernales,  rocks  near 742 
Peekskill,  rocks  near 623, 630, 638 
Peel  Sound,  rocks  near 529 
Pelham  Peak,  rocks  of 815 
Pelican  Lake,  rocks  of 535 
Page. 
Pelly  gneiss,  character  and  distribution  of. . .       46, 
883-884 
correlation  of 46 
Pelona  schist,  character  and  distribution  of. .      872 
Pembroke,  rocks  near 457, 496 
Pemigewasset,  rocks  at : 587 
Pend  Oreille  Lake,  rocks  near 850, 851 
Pend  Oreille  River,  rocks  near 866 
Peneplain  of  northern  Wisconsin,  description 
of 193 
Peninsula  Mountains,  rocks  of 869 
Pennsylvania,  correlation  in 44 
pre-Cambrian  rocks  of 44, 653-673 
literature  of 653-660, 644-673 
Penokee  district,  rocks  of 200-201, 313 
Penokee  Gap,  rocks  at 128, 185, 187 
Penokee-Gogebic  belt,  character  and  distribu- 
tion of 315 
correlation  in 310, 325 
Sec  also  Penokee;  Gogebic. 
Penokee-Gogebic  district,  rocks  of 328, 
332, 337-338 
Penokee  Mountains,  rocks  of 183 
Penokee  range,  description  of 178 
ores  of 202, 204 
location  of 180 
Penokee  series,  character  and  distribution  of.     138, 
140-144,182 
correlation  of 143-144, 187, 189, 207, 306, 318 
intrusives  in 142 
relations  of 308-309 
section  of 144 
subdivision  of 142-143 
Pentamerus  oblongus,  occurrence  of. . .  112, 118, 119 
Peoquob  Range,  rocks  of 792 
Pequawket  granite,  character  and  distribu- 
tion of 555-556, 557 
Percival,  J.  G.,  on  Connecticut  geology 582, 596 
on  Wisconsin  geology 717, 721, 749 
Peridotite,  occurrence  of 242 
Perry,  J.  IL,  and  Emerson,  B.  K.,  on  Rhode 
Island  geology 584, 596 
Person,  rocks  near 677 
Petatlan,  rocks  near 763 
Pewabic  quartzite,  character  and  distribution 
of 211-212, 213, 214, 221, 224, 225, 235 
correlation  of 210, 220, 237, 409 
iron  in 212 
relations  of 373 
Pewabik  range,  use  of  term 180 
Philadelphia,  rocks  near 653-654, 655-656 
Pickens,  rocks  of 689 
Pie  River,  rocks  near 271, 288, 300 
Pictured  Rocks,  rocks  at 300 
Piedmont  Plateau,  correlation  in 44,704-706 
pre-Cambrian  rocks  of 16, 18, 19, 44, 653-716 
fossils  in 499 
literature  of 653-706 
See  also  Appalachians;  particular  States. 
Pie  Island,  rocks  of 265 
Pierce,  James,  on  Xew  Jersey  Highlands..  635,651 
on  Staten  Island  rocks 622, 650 
Pigeon  Teak,  rocks  of 831-832 
Pigeon  Point,  rocks  of.   lit'.), 217, 222, 238, 278, 318, 341 
Pigeon  River,  rocks  near 117, 257, 528 
