Actinolite, 205 AFC. See Assimilation Fractional
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Index [Italic page numbers indicate major references] actinolite, 205 basalt, 2, 15, 29, 68, 73, 78, 92, Blue Mountains, 49, 190, 192, 194, AFC. See assimilation fractional 102, 103, 143, 149, 190, 192, 196, 206, 248 crystallization 195, 200, 206, 220, 291, 307, Blue Mountains anticlinorium, 190, Agency basin, 189, 194, 195 317, 322, 357, 360, 363, 367, 200 air-fall tephras, 191, 192, 194, 196, 368 Blue Mountains axis, 193, 196 214, 219 alkaline, 300 Blue Mountains province (BMP), Alae lava lake, 165 aphyric, 58 296, 297, 302, 352, 357 Alberthal Ranch section, 200, 204, brecciation, 269 Blue Mountains uplift, 67, 70, 82, 205 coastal, 144,146, 149, 154, 225 132, 187, 297, 299 Alder Bluff, 125 cobbles, 202 Bluff Formation, 149 Alder Bluff quarry, 125 conglomerates, 195 BMP. See Blue Mountains province Alder Mountain, 73, 78, 80 continental flood, 283 Bologna Creek, 78, 80 Alder Mountain Member, 80 cooling, 318 Bologna Creek Member, 72, 78 Aldrich Mountains, 68 detritus, 190 Bonneville Flood gravel, 193 anticline, 192 dikes, 344 Branson Creek, 80, 81 high 192 entablature, 269 Branson Creek Member, 81 Alkali Canyon Formation, 189, flood, 105, 110 breccias, 212 195 flows, 35, 64, 164, 171, 177, anastomosing, 269 alkali feldspar, 73 180, 184, 191, 196, 200, 254, basalt, 269 alluvium, 149 267, 293, 344 shatter, 269 Alpowa Grade, 101 high-alumina, 191 Bridal Veil Falls, 126, 127 analysis of variance (ANOVA), 177 intrusive, 126 Brothers fault zone (BFZ), 294, 302, andesine, 331 lunar, 314 304 andesite, 67, 134, 191, 215, 300 mid-ocean ridge (MORB), 358 strain, 294, 299 basaltic, 191, 192, 362 Miocene, 144 bubbles anomalies models, 144 formation, 158 europium, 337 olivine, 300 migration, 158, 162, 164 free-air, 149, 150 plateau, 144,146, 154 Buck thrust, 268, 272, 273, 276 gravity, 148, 152 pre-Columbia River Basalt Group, Buckhom Springs Lookout, 50 tantalum, 338, 341 224 Buckhorn Springs unit, 50 ANOVA. See analysis of variance ring dike, 148 Buford flow, 141 Antanum Ridge, 285, 291 tholeiitic, 22, 85, 89, 143, 303 Buford lava, 138, 139 apatite, 22, 73, 89, 309, 314, 323, transitional, 370 Buford Member, 132, 134, 137,139, 330 Basalt of Pack Sack Lookout, 144 201, 202 quench, 328 Basalt Waste Isolation Project, 58, intracanyon flow, 132 Armstrong Canyon, 46 317 invasive flow, 132 Armstrong Canyon unit, 46 Basin and Range extension, 301, 304 models, 141 ash, 192, 194, 204, 205 Basin and Range province, 194, 196, petrography, 140 flows, 192, 193 294 phases, 140,141 volcanic, 203 Central, 359 sedimentary interbeds, 134 Asotin County, Washington, 107 Bear Creek, 136 Bull Run section, 126 Asotin Creek, 47 basalt, 359 Bumping Lake, 215 Asotin flow, 207 drainage, 359 Bunker Hills, 240 Asotin Grade section, 200, 203, 204 flow, 134, 135, 141, 359, 363 Burlington Northern Quarry, 126, 127 Asotin Member, 200, 201, 202 magmas, 361, 364 Butler Canyon, Oregon, 124 assimilation fractional crystallization pedogenesis, 359 Butler Canyon section, 106, 109 (AFC), 377 petrography, 136 Butte Creek, 67, 69 Astoria, Oregon, 126, 143 Bear Creek Basalt Formation, 359 Byron Road, 251 Astoria Basin, 125, 146 Bear River Ridge, 125 Grande Ronde, 148,149 Bear Valley basin, 193 calcite, 203, 204, 269 gravity models, 149 Beaver Creek basin, 193 California Barrel Road, 149 linear dikes, 148,153 beds, ash, 192, 194 Camas Creek area, 67, 79, 81 ring dike, 148,149 Belt Supergroup, 200, 206 Camas Creek Member, 79 U-shaped dike, 148,151 Benewah embayment, 194 Camp Creek lava, 363 Astoria Formation, 149, 150 Benjamin Gulch, 24 Cape Foulweather, Oregon, 126, 127 Astoria, Oregon, Miocene basalt, Benson Ranch flow, 59 Cape Foulweather Basalt, 144 143 Bethel Ridge segment, 285 Cape Horn section, 114, 116 augite, 22, 80, 82, 89, 136, 137, BFZ. See Brothers fault zone Cape Hom-Sentinel Gap section, 116 309, 310, 317 Bingen, Washington, 117 Cascade Province, 240 Bingen section, 117 Cascade Range, 30, 36, 146, 148, Baker basin, 193 biotite, 204, 205 187, 190, 194, 219, 225, 230, Baker beds, 193 Birkett flow, 64 231, 240, 242, 254, 285, 297 Baker graben, 300, 303 Bitteroot lobe, 206 ancestral, 144 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957554/spe239-bm.pdf by guest on 24 September 2021 380 Index tectonism, 190 tectonic model, 220 emplacement history, 241 volcanism, 24, 31 well data, 209 eruptive activity, 16, 18, 65, 261 western, 143 Columbia Gorge region, 99 flows, 113, 199, 223,225,231, Cascade Range Province, faults, 231 Columbia Hills, 250, 251, 285, 240, 241, 242, 251, 254 , 256, Cathlamet, Washington, 124, 128 291 260, 296 Cathlamet dump, 125 Columbia Hills watergap, 45 geochemistry, 333 Cathlamet Quarry, 125 Columbia Plateau, 5, 14, 22, 31, 36, glass chemistry, 324 Cathlamet section, 124 49, 56, 86, 89, 106, 114, 126, lavas, 189, 190, 195, 196 Center Creek flow, 50 142, 143, 148, 158, 187, 195, magnetostratigraphic units, 108, Center Creek unit, 50 199, 230, 296, 304, 308, 334, 109 Central Ferry, 43 •ill nomenclature, 225 Chelan block, 210 age, 258 offshore extent, 14 Chenoweth Formation, 189 anticlines, 250, 251, 254, 283 origin, 261 Chief Joseph dike swarms, 5, 69, 300 central, 55, 102, 128, 184,194, outer margin, 14 China Creek unit, 49 247, 249, 250,251,254,256, paleomagnetism studies, 125 China Creek, Idaho, 49 258, 260, 262 stratigraphy, 3, 14, 225 Chiwackum graben, 210, 214, 216 defined, 248 unit thickness, 14, 286 Chumstick Formation, 214, 216 eruption, 296 vents, 5 chlorophaeite, 322, 324 fold geometry, 250 volcanic episode, 110 Clackamas River, 143, 230 fold structures, 258 Clarkston, Washington, 200, 201 volcanism, 22, 105, 191, 257, geologic evolution, 247, 260, 262 Clarno Formation, 361 262 Clarno volcanics, 303 volume, 1,5 geologic history, 260 Clatsop County, 147 See also Columbia River Basalt hydrocarbon exploration, 29 clay, 180, 203, 204, 205, 322 Columbia River basalt margin, 215 megashears, 302 fades, 203 Columbia River canyon, ancestral, northeastern, 194 kaolinitic, 203, 206 148 northern, 102 smectite, 184, 196, 203 Columbia River Channel, ancestral, northwestern, 190 strata, 199 242. 257 origin, 143,146 claystones, 134 Columbia River Gorge, 30, 50, 102, paleodrainage system, 29 Cle Elum, Washington, 214 143, 230 sedimentary basins, 187 Cle Elum Ridge, 217 Columbia River Plateau, 113 south-central, 22 Cle Elum-Wallula deformed zone, See also Columbia Plateau southeastern, 192 Columbia River Valley, lower, 148 248, 250, 254, 278, 285 southwestern, 191 Columbia River water gap, 251 Cle Elum-Wallula lineament, 215 strain, 296, 302 Columbia trans-arc lowland, 29, 225, Clearwater embayment, 50, 193, 206, stratigraphy, 188 230, 242 248 structure, 249 Condon, Oregon, 43, 46 subsidence rate, 256 Clearwater Mountains, 206 cones, volcanic, 214 tectonic model, 302 Clearwater River, 200, 202 conglomerates, 189, 190, 191, 192, tilting, 296 ancestral, 193, 194, 206 193, 194, 210, 214 western, 291 Cleman Mountain segment, 285 basalt, 195 Columbia River, 29, 37, 45, 62, 102, clinopyroxene, 73, 330, 344, 345, contamination, 334, 360 114, 125, 128, 146, 194, 251 347, 349, 360, 370, 374 continental crust, 144 ancestral, 64, 99, 103, 190 Cloverland Grade section, 200, 203, continental shelf, 15 basalt magmas, 308 204 cooling joints basalt plateau, 144 coal, 29, 132, 210, 212 infilling. 169, 180 Coast Range, 14, 114, 125, 126, drainage system, 103, 194 ferrobasalt, 308 width, 169,171, 184 146, 148, 225, 240, 285, 358 Cornucopia dike swarm, 5, 300 Coast Range province, 240 Columbia River Basalt (CRB), 164, 307 corundum, 324 Cohasset basalt, 308,318 Courtney Butte, 140 fractionation model, 315 deformation, 295 Cow Canyon section, 106, 109 glass compositions, 313 eruptions, 293, 303 Crab Creek, 102 mineral chemical compositions, extrusion, 146 Crab Creek flow, 58, 62, 64 310 quench fractionation, 307 Crab Creek unit, 116 Cohassett flow, 58, 64, 65, 160, tectonics, 293 CRB. See Columbia River Basalt 169, 174, 181, 308 tholeiites, 300 CRBG. See Columbia River Basalt internal stratigraphy, 158 vesiculation, 157 Group internal structure, 308 water content, 165 Crescent Bar section, 64 joint width, 171 See also Columbia River Basalt crust models, 158, 161, 162 Group vesicular zones, 157, 160 continental, 144 Columbia River Basalt Group oceanic, 144 vesiculation, 158, 161, 162 (CRBG), 1, 21, 31, 55, 67, 85, Cold Creek syncline, 266, 276 crystallization, 73, 158, 165, 308, 89, 105, 107, 113, 143, 149, 313, 374 Colfax, Washington, 100 314, 157, 187, 199, 206, 210, 214, assimilation fractional (AFC), 377 Colfax section, 92 220, 223, 266, 286, 291. 304, fractional, 314, 337, 360, 361, colonnades, 175, 180, 181, 184, 308, 321,343, 359, 372 367, 372, 374 308, 313 areal extent, 1,5, 15 crystals Columbia Basin, 86, 209 deformation, 219 plagioclase, 89 northwestern, 210 dikes, 5, 86 pyroxene, 308 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957554/spe239-bm.pdf by guest on 24 September 2021 Index 381 dacite, 215 environments, fluvial, 205 transpressional, 240 Dale, Oregon, 79, 81 Eocene, 149 fold-belt evolution, 191 Dale Member, 81, 348 Eola Hills homocline, 240 fossils, vertebrate, 191, 193 Dalles Formation, 189, 192 epiclastics, 190 Fox basin, 193 Dalles-Mount Hood syncline, 242 epidote, 205 fractionation, 78, 307, 313, 314, Dayville, Oregon, 80 erionite, 269 360, 374, 376 Dayville Basalt, 68, 80, 83, 345, erosion, 5, 80, 140, 241, 251, 256, crystal, 344, 348, 350 354 257 disequilibrium, 314 Dayville flows, 5, 68 stream, 241 liquid, 314 debris erosional stripping, 14 micro-local, 308, 313, 318 landslide, 214 Esquatzel Member,