INDEX 



743 



Shichshock Mountains, 194 

 Shonkin Sag laccolith, Fig. 23.6 

 Shuswap orogenic belt, Figs. 



6.5, 6.6, 69, 79, 81 

 Siberian connections, 623 

 Sierra de Parras, Fig. 28.4 

 Sierra Grande arch, Figs. 6.6, 



6.8, 25.16, 71, 75 

 Sierra Ladron, Fig. 25.13 

 Sierra Lucero, Fig. 25.13 

 Sierra Madre del Sur, Fig. 35.1 

 Sierra Madre Occidental, Figs. 



28.1, 35.1, 445, 490 

 Sierra Madre Oriental, Figs. 



28.1, 28.5 

 Sierra Nacimiento, Fig. 25.13 

 j Sierra Nevada batholith, 265 

 I Sierra Nevada block, 496 

 Sierra Nevada Mountains, 72 

 Sierra Nevada root, Fig. 38.1 

 Sierra Talmanca, 703 

 Sierra Tamaulipas, Fig. 41.12 

 Similkameen district, 279 

 Sitka belt, Fig. 17.19, 280 

 I Slave province, Fig. 4.3, 25 

 • Snake River basalts, 562 

 . Snake River canyon, 76 

 1 Snake River downwarp, Fig. 



22.1, 328 

 Sohm abyssal plain, Fig. 10.11. 



151 

 Solitario, Fig. 36.5 

 Sonoma orogeny, Fig. 17.1, 268 

 Sonoma Range, 264 

 Sonora, central, Fig. 28.3 

 Sonoran Desert, 426, 491 

 Sonoran Rockies, Fig. 19.1, 297, 



300, 480 

 South America, igneous prov- 

 inces, 537 

 South arch, Fig. 23.1 



South Park, 390 

 Southampton Island, 23 

 Southeastern Alaska, 277 

 Southeastern Idaho, 334 

 Southern Arizona Rockies, Fig. 



19.1, 297, 299, 426 

 Southern California, 267 

 Southern Coast Ranges, 462 

 Southern Nevada, 346 

 Southwestern Montana, 329 

 Southwestern Utah, 343 

 Spanish Peaks, 570 

 Spitzbergen, Fig. 40.6 

 Stansbury anticline, Fig. 6.5 

 Stockton arch, Fig. 29.6 

 Stratovolcanoes, 589 

 Submarine canyons, Atlantic, 



140 

 Submarine valleys, Pacific 

 Sudbury thrust, Fig. 11.11, 162 

 "Superior" province, 27 

 Sverdrup basin, Fig. 39.13, 639 

 Sweetgrass arch, Fig. 18.1, 59, 



68, 291 

 Sweetgrass Hills, Fig. 23.1 

 Sweetwater Range, 376 



Taconic allochthone, Fig. 11.10, 



162 

 Taconic belt, 120 

 Taconic Mountains, 162 

 Taconic orogeny, 36, 157, 170, 



180, 208, 216 

 Talkeetna fault, Fig. 39.2 

 Taxco, Fig. 43.2 

 Taylor thrust, Fig. 22.14, 336 

 Tectono-igneous cycle, 534 

 Tehuantepec ridge, 523 

 Temblor Range, Fig. 29.5 

 Tendoy thrust, 334 

 Terlingua-Solitario region, 568 



Terminology, 4 



Teton fault, 503 



Teton Range, 27, 361 



Texas arch, Fig. 15.7, 245 



Texas foreland, 245 



Tholeiitic basalt, 533 



Ti Valley fault, Fig. 14.2, 239 



Tigara uplift, Fig. 39.2 



Timiskaming subprovince, Fig. 

 4.1, 23 



Tintina fault, Fig. 39.2 



Tishomingo anticline, Fig. 15.6, 

 242 



Titicaca trough, Fig. 34.5 



Tobago, 686 



Tobin thrust, 263 



Tonopah quadrangle, Nevada, 

 262 



Tooele arch, 68 



Tortuga Island, 481 



Trachyte and phonolite prov- 

 inces, 563 



Transcontinental Arch, 38, 48, 

 55, 68 



Transverse Ranges, 462 



Trenches, zone of great, 506 



Triassic lowlands, Fig. 7.3, 94 



Trinidad, 686 



Tucson Mountains, Fig. 27.6 



Tularosa Valley, Fig. 25.11 



Tushar fault, 502 



Tyler basin, 655 



Uinta basin, Fig. 26.10, 408 

 Uinta Mountains, 384 

 Uinta series, 29 

 Uncompahgre Range, 250 

 Uncompahgre uplift, 408 

 Ungava Bay, 22 

 Ungava province, Fig. 4.1, 23 

 Upheaval dome, Fig. 16.1, 257, 

 421 



Val Verde basin, Fig. 15.1 

 Valley and Ridge province, 40, 



97, 108 

 Vancouver Island, Fig. 17.18, 



274 

 Vellecitos channel, Fig. 29.6 

 Venezuela, northern, 687 

 Venezuelan basin, Fig. 42.11, 



692 

 Ventura basin, Fig. 29.6 

 Vermont, central, 172 

 VermontJa geanticline, 169 

 Victoria Strait basin, Fig. 39.13, 



635 

 Virgin Islands, 681 

 Vishnu schist, 28 



Wabash River anticline, 45 

 Wabash Valley fault system, 48 

 Wasatch line, Fig. 6.1 

 Wasatch Mountains, Fig. 22.13, 



336, 499 

 Wasatch Plateau, Figs. 22.17, 



22.18 

 Washakie basin, 382 

 Washakie Range, 365 

 Waterpocket monocline, 409 

 Waverly arch, 49 

 Wellington arch, Fig. 39.13, 



635 

 Wells Creek basin, Fig. 16.1, 



257 

 Wendover arch, Fig. 6.6 

 West Texas basin, Fig. 15.7, 



245 

 Western Canada basin, Fig. 



5.20, 59 

 Western Interior basin. Fig. 5.1, 



40 

 Western Wyoming, 334 

 White Mountain magma, 176 



White Mountains, 173 



White Rivet Plateau, 408 



Wichita Mountains, 33, 237 



Wichita system, 38. 



Wiggins anticline, 660 



Willamette— Puget Sound de- 

 pression, Fig. 29.15 



Willard thrust, Fig. 22.14, 336 



Williston basin, 55 



Wind River basin, 377 



Wind River Range, 361 



Windingstair fault, Fig. 14.2, 

 239 



Windward Islands, 683, 697 



Winnemucca quadrangle, 264 



Winnipeg River, 27 



Wisconsin dome, 39 



Wollaston basin, Fig. 39.13, 635 



Wood Ri\er basin, 74 



Wrangell Mountains volcanic 

 field, 620 



Wrangell-Re\ illagiyedo belt, 

 280 



Wyoming Rockies, Fig. 19.1, 

 297, 299 



Wyoming shelf, 58 



Yakataga basin, Fig. 39.2, 615 

 Yakutat Bay, 516 

 Yellowstone Park, 369, 571 

 Yosemite, Fig. 17.8, 268 

 Yucatan basin, Fig. 41.15 

 Yucatan Peninsula, 701, 705 

 Yucatan platform, 669 

 Yukon, 29, 605, 624 

 Yukon Plateau, Fig. 39.1 



Zaccatecas, Fig. 43.2 



Zuni Mountains. Figs. 25.16, 



26.9 

 Zuni uplift, 251 



