| Sierrita de Ticul, Mexico, 418 | Sills, South Africa, 232 |
| Simpson Desert, Australia, 494 | Sinkholes, Florida, 420 |
| SIR-A, 7, 9 | |
| Brazil, 306 | Sudan, 18 |
| Skeidarárjökull, Iceland, 582 | Skeidárarsandur, Iceland, 580 |
| Salve Province, Canada, 66 | Smoky Mountains, Tennessee, 58 |
| Snake River Plains, Idaho, 204 | Solifluction, Falkland Islands, 366 |
| Solim&3245;es River, Brazil, 302, 304, 306 | Sřndre Strřmfjord, Greenland, 564 |
| Sonoran Desert | |
| Arizona, 482 | Mexico, 480 |
| South Africa | |
| Namib desert, 474 | Transvaal, 102 |
| volcanism, 232 | South China Sea, Mekong River delta, 334 |
| South Yemen, 268 | Southern Alps, New Zealand, 168 |
| Southern Arabian shield, 118 | Southwest Asia, Landsat mosaic, 126 |
| Space technology, 6 | |
| Spits | |
| Canada, 586 | North Carolina, 380 |
| sand, cuspate, 362 | SPOT, 675 |
| Star dunes, 454 | |
| Grand Erg Oriental, 468 | Saudi Arabia, 458 |
| Steady state, 4 | Stream piracy, Siberian Ranges, 92 |
| Strike-slip fault, Western China, 146 | Strombolian volcanism, 187 |
| Structural geomorphology, 5 | Structural dome, Mauritania, 98 |
| Subdelta, Mississippi River delta, 320 | Subglacial volcanoes, 530 |
| Sui anticline, Pakistan, 132 | Sui gas field, Pakistan, 130 |
| Sulaiman Ranges, Pakistan, 130 | Sunda volcanic Arc, Indonesia, 246 |
| Superimposed rivers, Appalachian | |
| Mountains, 56 | Surging glacier, Iceland, 556 |
| Susquehanna River, Maryland, 400 | Suture zone, southwest Assia, 126 |
| Sweden | |
| drumlins, 570 | glacial lakes, 570 |
| Swiss Plain, 82 | Switzerland, moraines, 568 |
| Syst73232;me Probatoire pour l´Observation | |
| de la Terre (SPOT), 675 | Systems approach, 4 |
| Taklimakan Desert, China, 510, 512 | Talemzane, Algeria, 174 |
| Tanezrouft Basin, Algeria, 470 | Tanzania, volcanism, 230 |
| Tarim basin, China, 144, 146, 294, 508, 510, 512 |
Taupo Volcanic Zone, New Zealand, 248 |
| Teays River, West Virgina, 310 | Tectonic classification, 30 |
| Tectonic geomorphology, 8 | Tectonic history, 30 |
| Tectonic landforms, 27 | Tectonic studies, 28 |
| Tectonic, volcanic activity, global, 28 | Tengger Desert, China, 504 |
| Tenoumer Crater, Mauritania, 174 | Terminal moraine, Iceland, 566 |
| Terraces, 259 | Tethys Sea, 30, 370 |
| Texas | |
| Big Bend, 214 | Edwards Plateau, 260 |
| Thar Desert, India/Pakistan, 500 | The Spider, Australia, 174 |
| Themokarst, Alaska, 430 | Thermal infrared, 682 |
| Thermokarst, 5 | |
| Canada, 586 | classifcation, 536 |
| U.S.S.R., 428 | Threshold, 4 |
| Tian Shan | |
| China, 146, 294 | Sashgar Ku-Che fold belt, 144 |
| Tibesti Mountains, Chad, 228 | Tibet Plateau, 138, 146, 658 |
| Ticul Fault, Mexico, 418 | |
| Tidal channels | |
| Ganges/Brahmaputra Rivers delta, 328 | Indus River delta, 348 |
| Iraq, 346 | Tidal flats, Alaska, 338 |
| Tidal glaciers, 558 | Tidal mudflats, Vietnam, 334 |
| Tigris River, Iraq, 346 | Tikchik Mountains, 426 |
| Till plain, Canda, 572 | Time scales, 2 |
| Titan, 630 | Tokositna Gacier, Alaska, 554 |
| Tombolos | |
| Ireland, 368 | Pakistan, 372 |
| Tongariro, New Zealand, 248 | Tors, Ireland, 368 |
| Trade Wind deserts, 448 | Trailing-edge coasts, 353 |
| Transform fault, 36 | Transvaal, South Africa, 102 |
| Trellis drainage, 255 | |
| Appalachian Mountains, 52, 56 | Oklahoma, 60 |
| South Yemen, 268 | Wyoming, 46 |
| Yukon, Alaska, 338 | |
| Triple Junction, Afar Triangle, 108 | Tröllaskagi, Iceland, 562 |
| Troodos Massif, Cyprus, 120 | |
| Tucson, Arizona, 276 | |
| geomorphic map, 651 | Tuggerah Lake, Australia, 358 |
| Tuktoyaktuk Peninsula, Canada, 586 | Tundra delta, Yenisey River delta, 342 |
| Turkey | |
| Anatonlian Faults, 114 | Landsat mosaic, 114 |
| Mount Ararat, 226 | Turpan Depression, China, 506 |
| Tycho, Moon, 600 | U-shaped galcial valleys, 562 |
| Ucayali River, Peru, 308 | Uinta Mountains, Utah, 46 |
| Unaweep Canyon, Colorado, 12 | Uncompahgre Plateau, Colorado, 12 |
| United States | |
| southwestern mosaic, 34 | western mosaic, 32 |
| Ural Mountains, U.S.S.R., 90, 560 | Uranus, satellites of, 632 |
| U.S.S.R. | |
| Amu Darya River delta, 350 | Elgygytgyn Crater, 669 |
| Lake Baikal, 440 | Lena River delta, 342 |
| Peter the Great Ridge, 144 | Pikkommunizma, 144 |
| Siberian Ranges, 92 | thermokarst, 428 |
| Ural Mountains, 90, 560 | Volga River delta, 336 |
| Yenisey River delta, 342 | |
| Utah | |
| fluvial dissection, 270 | Lake Bonneville, 436 |
| San Rafael Swell, 44 | Utah Lake, Utah, 436 |
| Valles Caldera, New Mexico, 12, 194 | Valles Marineris, Mars, 612 |
| Valley and Ridge fold belt, 53, 56, 58 | valley glacier, Alaska, 554 |
| Vance Seamount, 671 | Vatnajökull, Iceland, 548, 566 |
| Venezuela | |
| Angel Falls, 274 | fluvial imprint, 274 |
| Ventifacts, 452 | |
| Venus, 618 | |
| radar imagery, 622 | Verkhoyanskiy Range, U.S.S.R., 92 |
| Vesuvian volcanism, 187 |