742 



INDEX 



Murray escarpment, Fig. 32.2, 

 524 



Nansen's sill, 644 



Narragansett basin, 182 



Nashville dome, 48, 99 



Navajo volcanic field, 421 



Nebo thrust, Fig. 22.16, 341 



Nelson batholith, 275 



Nemaha Range, Fig. 5.13, 51, 

 52 



Nevadan orogeny, Fig. 17.7, 61, 

 268, 278, 437 



New Brunswick, 189 



New England Appalachian sys- 

 tem, 154 



New Hampshire magma series, 

 176 



New Jersey-Pennsylvania-Mary- 

 land-Virginia basin, 128 



New Mexico porphyry belt, 405 



New Mexico Rockies, Fig. 19.1, 

 297, 300, 398 



Newark basin, 130, 134 



Newfoundland, 203 



Nicaragua, 701 



Nicaraguan rise, Fig. 41.15 



Noonsocket basin, 185 



North Park, 390 



North Park thrust, 393 



North shore fault, 33 



Northeastern Mexico Rockies, 

 Fig. 19.1, 297, 300, 440 



Northern California, 266 



Northern Coast Ranges, 466 



Northey Hill thrust, 176 



Northwest subprovince, Fig. 

 4.1, 23 



Notre Dame Bay, Fig. 13.1 



Nova Scotia, 189 



Nye-Bowler fault zone, Fig. 

 23.1 



Oakland anticline, 45 

 Oaxaca, Mexico, Fig. 43.1 

 Ochoco-Blue Mountains, 278 

 Octavia fault, Fig. 14.2, 239 

 Ocula uplift, 666 

 Ogden thrust, Fig. 22.14, 336 

 Okanogan batholith, 278 



Okanogan highland, Fig. 29.15, 



76 

 Okanogan Range, 76 

 Okanogan Valley, 76 

 Oliverian magma, 176 

 Olivine basalt, 533 

 Olympic Mountains, Fig. 29.15 

 Ontario, 24, 41 

 Oquirrh basin, 72 

 Oquirrh Mountains, Fig. 22.13, 



336 

 Orwell thrust, Fig. 11.11, 162 

 Osage County en echelon faults, 



254 

 Osburn fault zone, Fig. 21.3, 



319 

 Osgood Mountains, Fig. 6.9, 76 

 Oswegan disturbance, 170 

 Ouachita Mountains, 223 

 Ouachita orogenic belt, 37, 52 

 Ouachita system, 38 

 Owl Creek Mountains, 365 

 Owyhee rhyolite, 562 

 Owyhee upland, Fig. 29.15 

 Ozark basin, 52 

 Ozark dome, 52 

 Ozona platform, Fig. 15.4 



Pacific fracture zones, 524 

 Pacific magnetic surveys, 526 

 Pacific submarine provinces, 



515, 525 

 Pacifica, 274 

 Palisades orogeny, 134 

 Palo Duro basin, 239 

 Palomas basin, Fig. 25.11 

 Panama, 703 

 Panhandle of Texas, 39 

 Paradox basin, 73 

 Parana basin basalt field, 547 

 Paricutin volcano, 701 

 Parras basin, Fig. 28.2 

 Parry Islands fold belt, 636 

 Pecos Range, Fig. 15.12, 248 

 Pedernal uplift, 250 

 Pedro banks, Fig. 42.1 

 Peninsular arch, 666 

 Penn-Colorado synclinorium, 



Fig. 14.8, 231 



Pennsylvanian basin, Fig. 6.7, 



74 

 Penokean orogenic belt, 26 

 Penokean province, Fig. 4.3, 25 

 Peridotite intrusions, Figs. 8.28, 



8.29 

 Permian basin, 73 

 Peru, Fig. 34.5 



Petrographic provinces, con- 

 cept, 532 

 Philipsbury batholith, 321 

 Piceance Creek basin, 408 

 Piedmont crystalline province, 



Fig. 7.1, 92, 107, 114 

 Piedmont orogeny, 36 

 Pine Mountain belt, 117 

 Pine Mountain fault, Fig. 14.2, 



239 

 Pine Valley Mountains, Fig. 



22.21 

 Pioneer Ridge, 528 

 Plateau central, 445 

 Point Arena, 467 

 ( Point ) Barrow geanticline, 



Fig. 39.4, 613 

 Pontotoc axis, 247 

 Popocatepetl volcano, 701 

 Porcupine dome, Fig. 23.1 

 Porphyry belt, 394 

 Potatoe Hills, 229 

 Potomac River, 108 

 Powder River basin, 374 

 Pribilof Islands, 521 

 Primary magmas, 581 

 Prince Edward Island, 191 

 Prince of Wales-Chichagof belt, 



280 

 Provo Wasatch, 341 

 Pryor Mountains, Fig. 23.1 

 Puerco platform, Fig. 25.11 

 Puerto Rico, 678 

 Puerto Rico trench, 687, 690 

 Pulaski thrust, Fig. 8.13 

 Purcell Range, 29 



Queen Charlotte Islands, Figs. 



17.18, 17.23, 275 

 Quitman Mountains, Fig. 25.16, 



565 



Raft River geanticline, Fig. 6.2, 



66 

 Raft River Mountains, 70 

 Raton basin, Fig. 25.11 

 Rattlesnake Hills, 565 

 Rawlins uplift, 382 

 Ray and Miami districts, Fig. 



27.6 

 Reading prong, Figs. 7.3, 8.30 

 Red River uplift, 239 

 Richardson Mountains, 626, 629 

 Richland Springs axis, 247 

 Ring-dikes, 178 

 Rio Grande depression, 399 

 Rio Grande embayment, Fig. 



41.1 

 Rio Grande rift, Fig. 25.12, 402 

 Roberts Mountains, Fig. 6.9, 76 

 Rock Springs uplift, 384 

 Rockingham anticlinorium, 175, 



181 

 Rocky Mountain trench, 306, 



317, 586 

 Rome thrust, Fig. 8.12 

 Rosaline Banks, Fig. 42.1 

 Rose Hill district, 103 

 Rough Creek fault, 28, 254 

 Rough Creek-Shawneetown sys- 

 tem, 48 

 Ruby Range, 497 



Sabine uplift, 655 



Sacramento Mountains, Figs. 



25.11, 25.16 

 Saint Elias Range, Figs. 39.1, 



39.9 

 Saint John thrust, Fig. 22.9, 



334 

 Saint Lawrence lowlands, 166 

 Salina basin, 33 

 Salinia, Fig. 29.3 

 Salt anticlines, 415 

 Salt domes, 658 

 Salton basin, 493 

 San Andreas channel, Fig. 29.6 

 San Andreas fault, 452, 469 

 San Andres Mountains, Fig. 



25.11 

 San Carlos Mountains, Fig. 



28.8, 565 



San Francisco volcanic field, 573 

 San Jacinto fault, 469 

 San Joaquin embayment, 452 

 San Joaquin Valley, Fig. 29.5 

 San Juan basin, Fig. 25.11, 408 

 San Juan Mountains, Fig. 25.2, 



408 

 San Juan volcanic field, 569 

 San Marcos arch, Fig. 41.1 

 San Rafael Swell, Figs. 25.12, 



26.1, 408 

 San Saba axis, 247 

 Sandia Mountains, Fig. 25.11 

 Sandia uplift, Fig. 25.12 

 Sangre de Cristo Range, 394 

 Santa Ana Mountains, 268 

 Santa Barbara district, Fig. 



29.11 

 Santa Cruz Mountains, Fig. 29.5 

 Santa Lucia orogeny, 272 

 Santa Lucia Range, Fig. 29.8 

 Santa Maria basin, Fig. 29.6 

 Santa Rita Mountains, Figs. 



27.3, 27.6 

 Savanna— Sabula anticline, 45 

 Sawatch Range, Fig. 25.2 

 Sebastian Viscaino, 481 

 Seismicity in California, Fig. 



29.14 

 Seismicity in trench zone, Fig. 



31.15 

 Selkirk Range, 61, 319 

 Selwyn Mountains, Fig. 39.1 

 Semisopochnoi Island, 521 

 Seneca fault, 254 

 Sequatchi anticline, Fig. 7.1, 



95 

 Serpent Mound, Fig. 16.1, 257 

 Serpentine intrusions, Figs. 



8.28, 8.29 

 Sevier fault, 502 

 Seward Peninsula, Fig. 39.1 

 Shawak fault, Fig. 39.2 

 Shawneetown fault, 254 

 Shawneetown-Rough Creeks 



fault zone, 254 

 Sheeprock Mountains, 345 

 Shenandoah National Park, 124 

 Sheridan arch, 59 

 Sherman Hill, Michigan, 255 



