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File:Puget Sound faults.png|right|thumb|upright=1.34|The principal Puget Sound faults (approximate location of known extents) and other selected peripheral and minor faults. Southern tip of Vancouver Island and San Juan Islands at top left (faults not shown), Olympic Mountains at center left, Mount Rainier at lower right (near WRZ). Faults north to south: Devils Mountain, Utsalady Point, Strawberry Point, Mount Vernon/Woods Creek, Little River, Sequim, Southern Whidbey Island Fault, Cherry Creek, Tokul Creek, Rattlesnake Mountain Fault Zone, Lofall, Canyon River, Frigid Creek, Saddle Mountain faults, Hood Canal, Dabob Bay, Seattle Fault Zone, Dewatto Lineament, Tacoma Fault Zone, East Passage, White River (extends east), Olympia Structure, Scammon Creek, Doty (extends west), Western Rainier Zone, Saint Helens Zone (extends south). Also shown: Victoria (V), and part of the Olympic-Wallowa Lineament. # # imagemap line numbers include comment lines. # line 5 # rect 272 12 336 34 scale box poly 0 36 50 58 50 70 0 48 Leech River Fault poly 108 80 132 80 140 72 180 72 184 84 383 144 383 156 250 98 108 90 Devils Mountain Fault Zone # 10 poly 186 100 208 100 245 110 245 124 216 124 210 114 Strawberry Point Fault poly 160 98 176 98 216 128 236 128 236 144 200 144 196 126 Utsalady Point Fault poly 102 92 120 102 212 160 242 190 242 206 290 252 282 262 116 112 88 94 Southern Whidbey Island Fault poly 300 202 308 196 324 224 320 234 Woods Creek Fault poly 308 174 328 206 324 216 300 176 Lake Chaplain Fault poly 328 100 254 102 324 224 300 176 308 216 290 212 248 140 256 132 Mount Vernon Fault poly 302 280 340 176 352 180 308 296 Cherry Creek Fault Zone poly 316 318 346 248 360 252 320 336 Tokul Creek Fault Zone poly 292 258 326 348 312 348 296 336 280 292 Rattlesnake Mountain Fault Zone # poly 0 144 20 152 28 142 62 152 66 166 80 171 76 184 0 160 Little River Fault rect 90 148 138 172 Sequim Fault poly 128 204 164 252 170 290 150 290 114 260 122 210 Dabob Bay Fault Zone poly 134 284 144 292 204 294 276 302 280 316 244 332 220 324 200 312 116 312 Seattle Fault Zone poly 78 342 104 300 124 280 128 280 108 300 104 310 114 324 98 350 Hood Canal Fault (questioned) poly 48 336 64 296 102 290 70 340 Saddle Mountain Faults poly 0 332 28 320 42 346 8 356 Canyon River Fault poly 28 364 64 344 70 348 52 380 28 380 Frigid Creek Fault poly 120 316 144 316 144 334 120 352 Dewatto Lineament/fault poly 126 356 156 332 204 332 204 372 228 400 192 400 148 356 Tacoma Fault Zone poly 210 352 262 360 262 376 216 376 210 364 East Passage Zone poly 272 324 320 360 383 372 383 424 256 340 264 328 Olympic-Wallowa Lineament poly 383 460 292 396 304 380 383 432 White River Fault poly 76 364 148 460 172 528 160 528 68 372 Olympia Structure (suspected fault) poly 0 536 36 536 40 520 64 520 72 536 132 536 132 548 0 548 Doty Fault poly 142 596 182 572 192 572 212 639 192 639 142 616 Saint Helens Zone poly 226 504 280 482 296 540 332 616 320 620 270 536 226 520 Western Rainier Zone circle 66 65 10 Victoria, British Columbia circle 136 27 96 San Juan Islands poly 383 0 383 12 376 18 360 56 340 50 362 0 Lake Shannon circle 42 246 45 Olympic Mountains circle 64 456 24 Black Hills circle 320 504 20 Mount Rainier poly 200 584 240 592 240 604 220 612 202 594 Riffe Lake poly 168 220 180 212 204 212 204 236 168 228 Lofall Fault The Puget Sound faults under the heavily populated Puget Sound region (Puget Lowland) of Washington state form a regional complex of interrelated seismogenic (earthquake-causing) geologic faults. These include (from north to south, see map) the: * Devils Mountain Fault * Strawberry Point and Utsalady Point faults * Mount Vernon/Woods Creek fault (Rogers Belt) * Cherry Creek Fault Zone * Southern Whidbey Island Fault (SWIF) * Rattlesnake Mountain Fault Zone * Seattle Fault * Tacoma Fault * Saddle Mountain Faults * Olympia structure (suspected fault) * Doty Fault * Saint Helens Zone and Western Rainier Zone ==General background== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Puget Sound faults」の詳細全文を読む スポンサード リンク
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