Index [Italic page numbers indicate major references] Absaroka fault, 423 arkose, 276, 519 389, 391 Absaroka sheet, 336, 337, 345, 349, Armstead anticline, 217, 229, 235 Beartooth Mountains, 469 355, 425 structural development models, 222 Beartooth thrust sheet, 470 Absaroka thrust, 79, 137, 335, 346, Armstead Hills, 86 Beaverhead basin, 500, 503, 505, 347, 349, 408, 414, 417, 422, Armstead thrust, 220, 229, 230, 233, 506 424, 425, 436 235 Beaverhead conglomerate, 229, 230, Absaroka thrust fault, 335, 336 Ashbough Canyon, 208, 209 235, 284, 309, 316, 508 Absaroka thrust sheet, 18, 94, 334, ashflow, rhyolitie, 309 Beaverhead County, 268 335, 337, 341, 345, 422, 425 Astoria Springs, 338 Beaverhead Divide fault zone, 258 Absaroka thrust system, 88, 89, 354, Atwell Guleh Member, 480 Beaverhead Formation, 219, 220, 355, 359, 421, 424, 432, 434, 272, 276 438 Baculites yokyamai, 423 Beaverhead Group, 205, 212, 213, Absaroka volcanic field, 480 Badge Pass fault, 173, 179 231, 235, 253, 268, 269, 271, Adaville Formation, 422 Badwater Fault zone, 483 272, 273, 275, 285, 287, 309, Agua Hedionda ranges, 153, 158 Bannack, Montana, 229, 233 310 Alberta foothills, 156, 159, 383 Bannack Pass, 237, 250, 253, 258 rocks, 311, 316 Alberta syncline, 156 Bannack thrust zone, 238 sandstone units, 231, 232, 233, Alberta triangle zone, 156, 161 Basal Conglomerate Member, 500 234, 235, 287 Alder Creek, 272 basalt, 279, 309 Beaverhead Mountains, 86, 237, 239, Alkali Creek, 293 basement, 99, 100, 111, 115,116, 263, 293, 303 Allen Valley Shale Member, 415 120, 121, 343, 363, 383, 397, central, 243, 258 alluvial fan system, 545, 552 403, 405, 359 southern, 238, 240, 243 , 246, alluvium, 212, 458 Archean, 121 251, 252, 254, 258 Alps, 169 block comers, 105 Beaverhead Mountains pluton, 342, American Cordillera, 143 block, 105, 107, 121, 138, 70, 246, 253, 254 American Fork area, 413 71, 333, 336 Beaverhead River Valley. 188, 196, Amoco No. 1 Snowline Grazing dry complex, Wyoming foreland, 11 203 hole, 270 corner, 105, 113, 117 Beaverhead sequence, 276 amphibolite, 230 crystalline, 57, 73, 120, 137, 143, bedding length, 54, 60, 62 Amsden Formation, 9, 196, 278, 146, 150, 151, 155, 157, 158, beds 323, 357 159, 432, 434, 443, 454, 475 coal, 420 Amsden Group, 310 deformation, 53, 54, 60 gypsum, 134 Ancestral Rocky Mountains, 36 deformed, 48, 56 limestone, 184, 211 Andan orogenic belt, 145 fault, 53, 104, 112, 115, 116, micrite, 562 Andean Cordillera, 143, 144, 145, 117, 354 red, 211, 320, 324, 326, 333, 156 geometry, 48, 50, 53, 56 336, 349, 420, 521, 559, 567 Andean segment, 144 length, 54, 62 sandstone, 231, 324 Andes Mountains, 143 mechanical, 13 sedimentary, 336 andesite, 454 mesoscopic structures, 123 belt angiosperms, 542, 562 microscopic structures, 123 Central Precordillera thrust, 146 anhydrite, 451 ramp anticlines, 72 Idaho-Utah-Wyoming thrust, 119, Animas Mountains, 458 rock, 45, 49, 76, 113, 361 120, 121, 130, 347, 357, 364 Antelope Island, 412 shortening, 402 Idaho-Wyoming thrust, 129, 137, anticlines strain, 126 155, 156, 240, 243, 247, 253, foreland, 86 thrusting, 466 333, 354, 516, 519, 520 ramp, 68, 73 models, 482 Idaho-Wyoming, 238 Antone Peak, 272, 278 Basin and Range province, 36, 557 thrust, 109, 362 Anvil Points Member, 480 Basin-Range extension, 309 thrust fault, 111 aplite, 243 basins Belt arch complex, 504 Appalachians, 111 foreland, 542,552 Belt basin, 82, 172, 177, 181, 196, Aquilapollenites senonicus Interval hydrographic, 480 320 zone, 272 intraforeland, 490, 498, 505 Belt Supergroup, 172, 177, 178, 179, Arapien Shale, 420 Battle Mountain, 376, 388 180, 196, 205, 258, 504 arc, magmatic, 36 Battle Mountain normal fault, 376 eastern slab, 165 Archean, 240 Battle Ridge monocline, 172, 178, kinematic model, 169 Archean craton, 412, 413, 425, 427 182 rocks, 217, 257, 262 Arco Hills formation, 254 Battleship reverse slip zone, 121 western slab, 169 Argentina, 143, 155, 156 BDT. See brittle-ductile transition Belt uplift, 505 west-central, 145 BDZ. See brittle deformation zone Bermejo basin, 151, 157, 158 argillites, 504 Beall Canyon thrust, 183 Bermejo Valley, 149, 150, 157 Arizona, 448, 449, 458 Bear Creek fold and fault system, 454 betonites, 561 southeastern, 34, 462 Bear Peak area, 454 Big Belt Mountains, 498 southern, 34 Bear thrust, 336, 376, 380, 387, Big Cottonwood Formation, 412, 434 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955208/mem171-bm.pdf by guest on 01 October 2021 572 Index Big Cottonwood Group, 335 507 Canadian shield, 12 Big Hatchet Mountains, 451, 462 Boulder-Highland uplift, 498, 500, Canyon Range sheet, 425 Big Hole River, 194, 196 503, 505 carbonates, 44, 60, 100, 101, 151, Big Piney, 397 Bozeman, Montana, 177, 217, 504 159, 191, 192, 220, 221, 238, Big Snowy Formation, 323 breccia, oxidized, 205 246, 247, 251, 268, 270, 341, Big Snowy Group, 310 Bridger arch, 178, 179, 180, 182 357, 454, 478, 504, 535, 540, Bighorn basin, 18, 157, 469, 471 Bridger basin, 475 550, 551, 552, 564 Bighorn Dolomite, 43, 48, 49, 57, Bridger Formation, 477 marine, 451 60 Bridger Range, 91, 177, 178, 179, Care fault, 177 Bighorn monocline, 470 181 Carmichael anticline, 187 Bighorn Mountains, 5, 8, 14, 16, 17, foreland structure, 88 Carmichael syncline, 183, 185 403, 470, 471 British Columbia, 35, 168 Casper arch, 8, 15, 397, 471, 474, central 471 britde deformation zone, 121, 123, 482 Bighorn thrust, 471 124, 126, 127, 137 Casper arch thrust, 22, 15 Biltmore anticline, 194, 198, 204 brittle-ductile transition, 160 Casper Mountain, 16 Biltmore fault, 188, 196 Brockman Hills, 458 Casper Mountain fault, 15, 17 Biltmore foreland anticline, 188, 194 Brooks Creek anticline, 182, 183 cataclasis, 41, 42, 50, 70, 134, 137, Biltmore Hot Springs, 190 Brushy Basin Shale Member, 561 138, 278 biosparite, 184 Buckhom Conglomerate, 542, 543, Cedar Creek syncline, 221, 226 biotite, 518, 519 554, 559, 561 Cedar Hills, 566, 567 bioturbation, 503, 505, 548 Bull Creek anticline, 380, 388 Cedar Mountain, 420, 458 Birch Creek Valley, 253 Bull Creek blind thrust, 388 modal analyses, 564 Bisbee basin, 462 Bull Creek fault, 377, 388 Cedar Mountain Formation, 417, 533, Bisbee Group, 462 Bull Creek normal fault, 388 542, 543, 552, 557,559, 561, Bismark fault, 176, 180, 183 Bull Creek thrust, 376, 377, 380, 562, 564, 567, 568 Bitterroot lobe, 169 381, 387, 388, 391 Cedar Mountain strata, 553 bivalves, 542, 550 Bull Creek thrust plate, 377, 388 Cedar Mountain strike belt, 567 Black Forest massif, 88 Burro Canyon Formation, 542 Cenozoic, 94, 150, 151, 205, Black Hills, 471 Burro uplift, 454 557 Black Hills monocline, 471 buttressing, 88 late, 36, 146 Blackleaf Formation, 205, 271, 490, middle, 36 491, 498, 503, 504 , 506, 507, Cabin block, 262 Cental Montana-Crazy Mountains 508 Cabin Creek, 338 trough, 498 lithostratigraphic intervals, 504, Cabin plate, 247, 250, 253, 257 Centennial basin, 293 505,506, 507 Cabin sheet, 303 Centennial fault, 269 Blacktail Deer Creek, 205, 213, 293 Cabin thrust, 230, 238, 239, 250, Centennial Mountains, 269, 270 Blacktail fault, 176, 198, 203, 208, 258, 268 Centennial Valley, 269, 270 213 Cabin thrust fault, 243, 250, 253 Central Appalachian salient, 337 Blacktail Mountains, 179, 203, 204, model, 251 Central Montana embayment, 498 205, 208, 213, 214 Cabin thrust plate, 240, 247, 252, Central Precordillera, 146, 153, 155, northeast flank, 208 253, 257, 263 158, 159, 160, 161 Blacktail Mountains salient, 91, 179, Cabin thrust sheet, 254, 281 Central Precordillera thrust belt, 146, 196, 198, 203 Cache Creek blind fault, 380,383, 151 Blacktail normal fault, 214 387, 389, 390 chalcedony, 567 Blacktail reverse fault, 86 Cache Creek fault system, 380, 381, Chalk Creek drainage, 422 Blacktail syncline, 204, 208, 209, 383, 387, 389, 390, 291 Challis Volcanics, 251, 254 214 Cache Creek foreland thrust, 89 Chamberlain Creek, 243 Blacktail-Snowcrest foreland uplift, Cache Creek subfault, 380, 381, 386, Chappo Member, 424, 519, 520, 291 389, 390, 391 521 Blacktail-Snowcrest Laramide uplift, Cache Creek thrust, 335, 336, 343, Charleston allochthon, 432 271, 279 345, 390, 391, 516 Charleston thrust fault, 425 Blacktail-Snowcrest uplift, 79, 91, calcareous nodules, 561 Charleston thrust plate, 420 203, 204, 205, 214, 268, 273, calcite, 126, 127, 134, 285, 310, Charleston thrust sheet, 412, 417, 274, 281, 283, 285, 287, 291, 335, 349, 549, 564 428 309, 498, 500, 505, 507 veins, 129, 134, 185, 342 Charleston thrust system, 89, 420, gravity models, 294, 303 California, 36 432 gravity survey, 292 California uplift, 36 charophytes, 420 kocomant 1[\ 11 1 (\1 111 i f„..i, 1 en i i rcn W1UVO0, l/UOWJILWIlk, t XJ, I X, IV t , l^il, v.ai^ti lauii, ui UCLH1S, JJU 138, 172, 333, 336 Cambrian, 402 chert, 231, 247, 475, 518, 519, 535, crystalline basement, 151, 224 Camp Creek, 188, 191, 192 540, 543, 564, 568 Bloody Dick creek, 257, 258, 262 Camp Creek fault, 180, 191 Chevron Game Hill Unit well, 376, Blue Dome block, 254 Camp Creek thrust, 172, 177, 178, 380, 383 Bluebird Mountain Formation, 247, 182 Chevron, Inc. No. 1-34 Game Hill 250, 253, 254 Camp Creek thrust fault, 180 Unit well, 376, 380, 383 Bootlegger Member, 507 Camp Davis Formation, 336, 389 Chevron, Inc. Federal No. 1-33 Cabin Boquillas Formation, 454 Canadian Cordilleran thrust belt, Creek Unit well, 376 Boulder batholith, 89, 92, 302, 498, 156 Chica de Zonda, 153, 160 503 Canadian Foothills province, 240 Chicken Creek, 562, 567 Boulder River Sandstone Member, Canadian Rocky Mountains, 88, 252 Chihuahua, northern, 458 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955208/mem171-bm.pdf