Date File Created Name of Creator 1/28/2008 Sarah GeoRef Data 2007-123678 DN GeoRef TI Distribution and geochronology of Oregon Plateau (U.S.A.) flood basaltvolcanism; the Steens Basalt revisited AU "Brueseke, Matthew E; Heizler, Matthew T; Hart, William K; Mertzman,Stanley A" AF "Eastern Illinois University, Department of Geology and Geography,Charleston, IL, United States (USA)" AF "New Mexico Bureau of Geology and Mineral Resources, United States(USA); Miami University, United States (USA); Franklin and MarshallCollege, United States (USA)" SO "Journal of Volcanology and Geothermal Research, vol. 161, no. 3,pp.187-214, 15 Mar 2007" IS 0377-0273 CD JVGRDQ DE absolute age; Ar/Ar; basalts; Cenozoic; Columbia River Basalt Group;dates; flood basalts; Harney County Oregon; igneous rocks; MalheurGorge; Miocene; Neogene; Oregon; Oregon Plateau; Steens Basalt; SteensMountain; Tertiary; United States; volcanic rocks; volcanology;Yellowstone Hot Spot AB "The timing and petrogenesis of mid-Miocene flood basalt volcanism inthe northwest United States has been extensively addressed, yet thechemical characteristics and temporal details of the Steens Basalt,exposed on the Oregon Plateau, are poorly defined. Steens Basaltvolcanism has generally been accepted to have occurred atapproximately 16.6 Ma, coeval and/or just prior to the onset ofColumbia River Basalt Group volcanism to the north. New major andtrace element analyses and nine (super 40) Ar/ (super 39) Ar agesranging from 15.51+ or -0.28 to 16.58+ or -0.18 Ma were obtained onOregon Plateau flood basalt lava flows from stratigraphic sections inclose proximity to Steens Mountain. Additionally, new (super 40) Ar/(super 39) Ar ages were obtained on the uppermost and thirty-firstlava flow down from the top of the approximately 1 km section ofSteens Basalt exposed at Steens Mountain and yield eruption ages of16.59+ or -0.10 and 16.55+ or -0.10 Ma, respectively. Field relation!" LA English NT Based on Publisher-supplied data PY 2007 PT Serial; Analytic CP Netherlands (NLD) LL "Latitude:S390900,S390900 Longitude:E1753800,E1753800" CL 03 Geochronology; 05A Igneous and metamorphic petrology CY "GeoRef, Copyright 2007, American Geological Institute. Referenceincludes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam,Netherlands" UD 200724 AN 2007-123678 Sample Data Item SiO2 TiO2 Al2O3 Fe2O3 MnO MgO CaO Na2O K2O P2O5 LOI Total Ni Cr Sc V Ba Rb Sr Zr Y Nb Ga Cu Co Zn Pb La Ce U Th SiO2 TiO2 Al2O3 Fe2O3 MnO MgO CaO Na2O K2O P2O5 LOI Total Ba Ce Co Cr Cu Ga La Nb Ni Pb Rb Sc Sr Th U V Y Zn Zr Age Age_max Age_min Age Age_max Age_min Age_max Age_min Lat_DD Long_DD Loc_prec Rock_type Rock_class Location_name Material State Units wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Ma Ma Ma Ma Ma Ma Ma Ma DD DD DD Method 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 5 5 5 7 7 6 6 6 Sample Name MB97-2 59.46 2.03 13.45 8.86 0.14 2.13 5.51 3.28 2.8 0.39 1.08 99.13 12 25 25.6 330 1226 78 333 282 44 15.5 20.6 17 40 131 15 30 64 2.8 8.2 15.17 15.53 14.81 43.05601833 -118.4048431 0.01 Volcanic Andesite Folly Farm West whole rock Oregon MB97-24 51.22 2.55 13.18 14.78 0.22 4.16 7.64 3.34 1.52 0.36 -0.06 98.91 22 31 33.5 406 561 35 397 194 37 11.6 26.1 244 41 118 9 20 38 1.5 4.6 16.06 16.42 15.7 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-25 49.39 1.93 15.16 13.18 0.19 6.09 9.11 2.88 0.59 0.31 0.21 99.04 27 36 27.3 254 419 12 463 135 25 14.9 25.1 25 45 117 5 16 30 1.6 3.4 16.24 16.74 15.74 43.16120111 -118.3838064 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-32 50.21 2.32 17.32 11.83 0.16 4 9.18 3.25 0.95 0.35 0.28 99.85 53 33 25.6 265 397 22 498 166 30 13.4 27.4 92 36 103 6 17 36 1.2 4.4 16.03 16.73 16.33 43.16120111 -118.3838064 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-40 53.36 2.56 14.4 12.11 0.19 3.46 6.78 3.42 2.32 0.65 1.05 100.3 12 11 24.9 275 742 53 461 270 43 17.6 25 162 28 132 11 33 62 1.6 7.8 15.51 15.79 15.23 42.74047056 -118.4258794 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-47 50.73 2.58 14.97 13.65 0.2 4.33 7.16 3.56 1.9 0.64 1.26 100.98 118 43 29.3 334 314 8.2 479 171 30 14.3 24.6 90 50 127 5 14 38 0.6 2.6 16.48 16.78 16.18 42.74047056 -118.4258794 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-55 51.17 2.28 15.17 12.52 0.15 5.15 8.76 3.16 1.17 0.56 1.11 101.2 48 3 23.9 299 525 18 511 197 32 15.9 24.2 41 40 134 5 25 46 1.1 5.4 16.58 16.76 16.4 42.74047056 -118.4258794 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-65 47.98 2.09 15.92 13.49 0.18 6.24 8.53 3.16 0.92 0.41 0.42 99.34 129 44 27.7 350 374 15 490 151 29 10.7 24.2 212 49 114 5 14 27 0.2 4.3 16.4 16.58 16.22 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-87 47.38 2.06 16.3 13.43 0.18 6.34 8.77 3.25 0.89 0.32 0.4 99.32 136 23 27.7 352 345 13 532 144 29 10.4 24 177 52 111 4 12 31 1.3 3.8 16.33 16.53 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon 86-29 50.39 2.14 15.68 13.15 0.2 4.88 8.35 3.62 1.27 0.44 1.5 101.62 66 212 620 29 514 213 36 14.2 23.5 62 38 109 27 52 0.4 5.1 16.31 16.51 16.11 42.99992111 -118.2575875 0.01 Volcanic Basalt Folly Farm East whole rock Oregon CH82-22B 47.3 2.2 16.4 13.9 0.19 5.09 8.79 3 1.29 0.37 0.31 98.84 60 13 553 140 16.55 16.65 16.45 42.6832 -118.551 0.1 Volcanic Basalt Steens Mountain whole rock Oregon CH82-22G 47.3 2.38 15.7 15.1 0.19 5.73 8.25 3.14 0.99 0.34 0.47 99.59 70 14 476 100 16.59 16.69 16.49 42.6832 -118.551 0.1 Volcanic Basalt Steens Mountain whole rock Oregon 86-1 52.27 1.96 14.82 13.24 0.18 4.62 8.02 3.25 1.19 0.29 0.98 100.82 17 247 621 33 418 182 30 13.1 22.6 20 42 114 22 44 1.3 5.3 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-2 48.99 2.44 15.45 13.08 0.18 5.02 10.09 3.33 0.72 0.32 1.07 100.69 55 287 333 16 426 181 38 11.5 24.2 137 35 101 19 40 1 2.8 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-3 49.83 2.61 15.65 13.33 0.18 4.13 9.35 3.39 0.96 0.39 1.07 100.89 42 258 473 25 417 218 40 14.1 25.9 116 32 112 17 38 2.5 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-4 49.76 1.56 20.72 9.34 0.12 3.59 10.31 3.47 0.63 0.21 0.7 100.41 59 155 282 12 536 121 23 8 23.1 61 29 73 15 32 0.9 1.9 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-4* 51.88 1.93 18.96 10.83 0.14 3.81 9.61 3.58 0.83 0.26 0.78 102.61 49 158 392 20 522 151 27 9.9 25 127 31 73 20 39 0.4 2.2 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-6 49.79 1.77 19.33 9.99 0.13 3.53 9.77 3.5 0.81 0.27 0.74 99.63 49 171 325 18 525 139 25 9.3 23.2 111 29 77 15 30 2.1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-6* 50.19 2.09 17.24 11.58 0.16 4.65 9.31 3.32 1 0.49 0.96 100.99 66 188 417 24 477 169 31 10.6 24.9 92 34 90 19 36 1.3 1.7 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-7* 48.86 2.32 17.58 12.19 0.15 4.59 8.89 3.44 1 0.38 0.97 100.37 68 151 493 21 508 204 34 14.2 24.9 69 37 103 22 39 1.3 2.4 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-8* 51.7 1.87 14.09 13.35 0.2 5.04 8.93 3.37 1.06 0.3 0.93 100.84 36 326 529 25 390 149 37 7.8 21.2 100 38 101 17 41 0.5 3.5 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-9 51.11 2.41 13.7 13.49 0.19 5.07 8.92 3.05 1.14 0.36 1.11 100.55 21 276 460 25 405 221 38 15.6 22.7 35 33 124 18 36 0.7 3.3 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-10 49.85 2.22 15.32 12.91 0.18 5.19 9.91 3.24 0.72 0.29 0.81 100.64 42 253 369 16 450 175 32 12.8 23.1 41 35 104 18 38 0.1 1.7 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-11 49.05 2.09 15.78 12.78 0.17 6.29 9.79 3.27 0.65 0.33 0.96 101.16 75 246 327 13 485 170 31 13.4 22.5 38 44 106 22 40 1.3 1.5 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-12 49.09 2.09 15.97 12.87 0.17 5.87 9.47 3.24 0.8 0.37 1.01 100.95 75 215 377 17 496 189 33 14.6 23.7 41 38 107 25 43 0.4 1.8 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-13 49.22 2.18 15.93 12.69 0.15 4.48 9.3 3.22 0.74 0.36 0.58 98.85 79 236 363 11 503 187 35 14.6 23.1 56 36 113 20 41 1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-14 50.97 2.53 13.39 14.95 0.22 4.05 7.65 3.49 1.75 0.4 0.86 100.26 22 372 642 38 391 203 42 10.5 23.9 221 37 119 23 48 1.9 3.7 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-15 51.35 1.9 15.44 12.99 0.18 5.13 7.83 3.72 1.3 0.32 0.99 101.15 81 235 571 27 472 159 31 7.7 22.3 133 43 95 18 44 2.1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-16 51.52 2.08 15.14 13.25 0.17 4 7.34 3.84 1.41 0.38 0.71 99.84 305 685 30 478 172 31 9.3 22.2 195 41 111 21 43 0.7 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-17 48.82 1.99 15.76 14.19 0.19 5.9 8.76 3.47 0.8 0.27 1.03 101.18 90 235 434 11 503 138 30 7.4 23.5 116 45 90 19 40 0.4 1.9 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-18 50.87 2.52 14.19 14.18 0.19 4.2 7.69 3.64 1.48 0.38 0.87 100.21 48 316 692 30 455 185 36 9.8 23.8 265 35 105 16 39 1.2 3.6 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-19 48.8 1.38 15.5 11.58 0.17 7.48 10.9 2.94 0.34 0.16 0.78 100.03 129 248 183 6.7 311 101 26 5.7 17.5 93 46 88 9 26 0.3 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-20 54.25 2.05 14.08 12.08 0.18 3.24 6.61 3.73 2.05 0.44 0.46 99.17 29 268 864 50 450 210 34 9.9 21.3 151 34 109 23 49 1.6 4.4 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Andesite Folly Farm East whole rock Oregon 86-21 48.13 1.84 16.68 13.83 0.2 5.19 9.09 3.33 0.73 0.26 0.72 100 129 278 354 11 515 118 29 7.3 22.1 99 50 95 14 34 0.7 1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-22 49.02 2.11 16.27 13.54 0.2 5.08 8.7 3.64 1.03 0.5 0.92 101.01 63 224 513 16 539 150 34 8.5 23.4 129 38 94 19 40 0.9 2.2 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-23 48.89 2.19 15.18 13.38 0.18 6.12 9.67 3.28 0.68 0.35 0.65 100.57 58 258 349 12 473 171 30 12.1 21.8 67 42 115 15 36 0.2 2.6 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-24 49.8 2.57 14.74 14.12 0.19 5.19 8.57 3.38 1.18 0.46 0.98 101.18 77 237 529 26 464 243 39 17.9 23.3 81 41 125 29 51 1 3.1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-25 48.54 2.08 15.43 13.07 0.18 6.49 9.72 3.23 0.57 0.3 0.79 100.4 153 225 264 8.1 479 149 29 11.5 22.1 57 47 105 18 39 0.2 2.1 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-26 49.05 2.4 15.83 13.41 0.18 5.24 9.36 3.6 0.83 0.39 1.07 101.36 78 221 414 15 510 190 35 14.1 24.3 47 38 101 25 53 0.4 2.8 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-27 48.04 1.97 15.66 13.23 0.18 6.38 9.89 3.41 0.57 0.27 0.7 100.3 110 248 353 7 505 135 28 10.1 21.5 64 45 103 15 35 1 0.8 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon 86-28 49.96 2.19 15.43 13.26 0.24 4.81 8.22 3.53 1.31 0.44 0.93 100.32 67 227 678 32 514 220 37 15 23.6 59 38 115 26 49 2.3 3.7 16.51 16.11 42.9999 -118.2576 0.01 Volcanic Basalt Folly Farm East whole rock Oregon MB97-5 50.03 2.36 16.53 11.89 0.16 4.28 9.61 3.11 0.8 0.36 0.42 99.55 43 47 26.6 273 396 20 431 178 34 13 22.6 71 34 106 6 16 32 1.1 1.7 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-6 50.88 1.94 18.83 10.55 0.14 3.89 9.61 3.48 0.83 0.18 -0.03 100.3 56 57 22.4 209 373 17 519 144 27 10.9 22.8 76 32 91 6 16 33 1.1 2.2 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-7 50.42 2.26 14.79 13.03 0.18 5.6 9.69 3.04 0.69 0.21 0.15 100.06 42 62 29 287 322 14 439 171 31 13.4 20.9 42 41 124 5 16 35 0.1 1.2 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-8 49.71 2.26 15.56 13.16 0.18 5.88 9.59 3.04 0.66 0.36 -0.18 100.22 66 48 25.9 277 327 14 488 180 32 15.5 21.5 41 41 123 6 21 38 0.9 0.3 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-10 51.74 2.54 13.31 15.02 0.22 4.18 7.69 3.44 1.52 0.3 0.09 100.05 21 16 33.2 417 566 34 383 195 39 10.8 21.7 196 42 131 10 21 41 1.4 2 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-11 52.15 1.87 15.43 12.49 0.18 4.72 7.26 3.57 1.42 0.34 0.53 99.96 80 23 22.8 280 562 30 485 164 30 9.3 20.1 146 42 110 8 16 35 0.4 2 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-12 52.82 2.34 13.85 13.84 0.2 4.05 6.97 3.54 1.78 0.42 0.39 100.2 35 6 26.8 327 712 36 441 200 37 11.1 21 189 38 121 10 23 44 0.4 3.2 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-13 51.84 2.62 13.89 13.73 0.19 3.94 6.99 3.54 1.51 0.45 0.34 99.04 39 10 29.1 382 639 32 435 188 34 10.6 21.3 197 40 120 10 19 38 0.3 1.4 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-14 50.73 2.57 13.82 13.32 0.19 4.59 8.4 3.07 1.44 0.62 0.64 99.39 28 25 26.1 312 609 34 452 253 39 18.2 22.5 61 36 142 9 30 54 0.6 3.4 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-15 48.19 1.86 16.23 13.12 0.18 6.08 8.78 3.39 0.77 0.35 0.43 99.38 101 33 23.6 282 343 13 496 117 27 7.3 20.6 156 47 102 5 12 23 0.4 1.6 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-16 46.6 1.98 15.6 13.72 0.19 6.62 8.62 3.12 0.79 0.37 0.81 98.42 126 30 27.7 321 334 14 464 127 28 8 19.7 204 52 110 6 16 24 0.4 0.8 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-17 45.71 1.86 15.71 12.89 0.2 6.32 8.59 3.05 0.77 0.33 1.05 96.48 132 38 26.7 306 348 12 472 125 27 7.6 19.5 162 50 102 6 14 27 0.7 1 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-18 47.13 1.87 15.99 13.31 0.17 6.22 8.77 3.19 0.75 0.46 0.82 98.68 139 45 26.1 300 327 14 494 123 27 7.5 20.1 182 52 102 5 9 28 0.3 1.4 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-20 49.75 2.21 15.26 12.82 0.18 5.54 9.7 3.12 0.66 0.32 0.41 99.97 43 67 30.6 293 298 9 441 173 31 13.5 20.2 46 41 123 5 16 38 0.3 1.4 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-21 49.7 2.21 14.87 12.83 0.17 5.4 9.27 3 0.77 0.12 0.42 98.76 42 67 28.6 303 310 16 430 171 30 13.6 20.5 43 41 117 5 18 35 0.1 1.6 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-22 50.29 2.31 15.35 13.31 0.17 5.39 9.38 3.05 0.75 0.29 0.13 100.42 43 71 29.6 285 342 17 437 171 30 13.7 20.8 40 41 118 6 17 37 0.7 1.4 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-23 48.84 2.3 15.99 13.48 0.18 5.63 9.57 3.02 0.71 0.35 1.06 101.13 73 50 27.8 278 328 11 481 173 30 14.7 20.6 41 44 125 5 19 35 0.3 1.9 16.42 14.81 43.05601833 -118.4048431 0.01 Volcanic Basalt Folly Farm West whole rock Oregon MB97-26 49.65 2.07 15.53 13.2 0.19 5.47 9.22 2.96 0.66 0.28 0.36 99.59 22 27 24.8 257 464 13 469 147 27 16 25.2 23 46 120 5 17 30 0.6 3.5 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-27 49.4 2.08 15.79 12.47 0.18 5.64 10.04 2.81 0.6 0.25 0.16 99.42 76 179 30.4 312 270 12 404 143 31 11.5 25.3 166 44 105 4 16 33 0.3 3.2 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-28 55.35 1.05 16.06 9.73 0.15 4.66 6.78 3.22 1.87 0.28 1.64 100.79 79 87 21.9 222 323 53 292 89 28 9.6 19.8 122 33 94 10 8 13 2.9 4 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Andesite Route 78 N whole rock Oregon MB97-29 52.48 1.84 14.28 12.33 0.19 5.42 8.87 3.05 1.25 0.23 0.36 100.3 46 115 29.9 274 486 27 415 143 32 9.3 23.4 114 38 97 6 15 29 2.1 3.9 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-30 49.95 1.96 18.57 10.67 0.15 3.99 9.66 3.29 0.77 0.24 0.73 99.98 62 27 21.9 236 318 16 531 139 26 12 25.8 88 33 94 5 15 27 1.6 3.8 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-31 49.96 2.2 17.4 11.6 0.16 4.23 9.36 3.23 0.81 0.24 0.94 100.13 143 48 28.3 334 394 6.9 462 116 26 12.9 26.6 117 38 102 4 17 36 0.3 3.4 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-33 50.11 2.39 17.07 12.26 0.17 4.2 9.01 3.22 0.88 0.22 -0.03 99.5 57 27 24.7 282 427 17 496 170 30 13.6 27.6 78 39 108 5 22 41 2 4.8 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-34 51.04 1.81 19.4 9.96 0.14 3.96 9.85 3.3 0.75 0.26 0.12 100.59 60 62 21.6 209 314 15 545 133 24 11.2 26.4 62 32 85 5 13 31 1.2 4.1 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-35 50.41 2.28 16.05 12.46 0.17 5.24 8.57 3.07 1.06 0.33 0.47 100.11 79 103 25.4 276 409 26 450 181 31 14.6 25.5 115 44 119 7 17 39 1.6 3.4 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-36 50.74 2.06 18.45 10.82 0.14 4.2 9.27 3.36 0.81 0.35 0.59 100.79 80 112 25.8 237 365 15 498 154 27 13.2 25.2 98 37 102 5 17 35 1.7 4.7 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-37 49.7 2.15 18.2 11.48 0.15 4.74 9.39 3.29 0.73 0.35 0.67 100.85 79 65 25.4 276 386 26 450 181 31 13 26.8 105 40 119 7 17 33 1.6 3.4 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-38 49.59 2.4 17.56 12.21 0.16 4.61 8.75 3.29 0.96 0.42 0.25 100.2 80 51 23 212 455 21 511 191 31 16.4 26.7 120 43 118 6 19 42 1 4.6 16.73 15.74 43.1612 -118.3838 0.01 Volcanic Basalt Route 78 N whole rock Oregon MB97-39 52.65 1.44 16.13 10.62 0.15 5.66 7.72 3.16 1.38 0.26 0.51 99.68 111 52 22.4 241 501 28 422 154 25 10.1 23 124 39 108 8 14 33 1.1 6.2 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-42 47.76 1.98 15.54 12.79 0.16 6.62 9.23 2.99 0.52 0.35 0.98 98.92 129 59 25.1 248 232 5.4 506 130 26 12.3 24.3 68 45 111 4 19 26 1.7 3.6 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-43 48.96 2.49 15.07 12.85 0.16 4.91 6.85 3.61 1.72 0.66 2.53 99.81 82 41 23.9 323 691 25 493 230 37 15.2 25.1 141 39 127 8 30 61 0.6 5.4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-44 47.6 2.57 15.08 14.49 0.19 5.11 8.56 3.17 0.93 0.5 1.71 99.91 74 27 26.3 382 414 27 544 158 29 11.1 24.6 204 43 114 6 19 40 1.3 5.2 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-45 48.42 2.14 16.64 12.88 0.17 4.73 8.26 3.44 1.22 0.44 3.1 101.44 104 25 25.9 341 370 18 465 201 34 16.6 26.5 109 49 140 5 21 41 0.9 3.6 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-46 47.77 2.31 15.13 14.02 0.2 5.99 9.21 3.06 0.73 0.44 -0.05 98.81 44 19 26 361 677 38 498 251 41 16.5 25.7 217 38 131 9 31 63 1.3 5.9 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-48 48.18 2.27 15.62 13.9 0.19 5.81 9.04 3.04 0.76 0.39 0.86 100.06 131 47 25.8 311 350 11 512 171 32 16.2 24.8 176 53 135 5 23 41 1.8 3.4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-49 47.99 1.72 16.21 13.02 0.18 5.54 9.26 2.96 0.66 0.28 1.99 99.81 143 28 28.3 334 275 6.9 462 116 26 9.2 22.8 229 53 102 4 14 25 0.3 3.4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-50 47.41 2.25 15.2 13.76 0.18 5.77 8.9 2.96 0.86 0.43 1.75 99.47 164 157 29.2 400 359 10 480 160 30 11.9 24.4 198 53 123 5 16 36 0.9 3.3 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-51 48.92 2.21 15.65 12.4 0.14 6 8.86 3.05 0.88 0.43 1.52 100.06 126 83 24.6 277 369 16 480 184 30 15.3 24.7 72 45 119 6 24 43 1.1 4.3 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-52 49.27 1.64 15.97 11.24 0.15 7.64 9.89 2.7 0.51 0.27 1.06 100.34 168 234 28.4 262 225 6.5 446 115 22 10.5 21.8 75 47 102 4 15 29 1.2 3.5 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-53 48.27 1.92 15.39 12.36 0.17 6.27 9.89 2.91 0.66 0.3 1.63 99.77 124 100 27.3 291 277 9.4 505 137 26 13.2 22.6 59 48 123 4 16 32 1.6 2.9 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-56 50.13 1.79 15.46 11.47 0.16 6.71 9.71 2.88 0.79 0.37 1.13 100.6 85 86 24.2 262 347 17 475 141 25 12.5 22.5 42 44 120 5 15 34 1.1 4.7 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-57 49.06 1.88 18.16 10.56 0.15 4.04 9.33 3.34 0.97 0.33 1.42 99.24 68 46 25.1 285 332 17 601 140 28 10.5 25 321 33 79 5 16 29 1 4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-58 48.43 1.75 15.86 12.05 0.19 7.59 9.77 2.8 0.49 0.29 0.97 100.19 106 75 25.6 262 203 6.6 479 118 23 11.3 22 44 48 116 3 10 30 1 3.3 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-59 48.49 1.81 15.92 11.8 0.19 7.05 9.77 2.81 0.53 0.3 1.24 99.91 105 71 27.3 278 220 6.6 477 123 24 11.9 22.3 46 47 114 4 17 26 1.5 3.5 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-66 47.99 1.75 15.85 13.48 0.19 6.92 8.81 2.94 0.7 0.33 0.42 99.38 144 49 29 335 269 13 405 118 27 8.3 23 221 57 103 5 10 22 0.9 3 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-67 48.06 2.27 17.1 12.99 0.18 4.42 8.75 3.37 0.98 0.52 1.02 99.66 95 23 27.6 338 373 15 526 167 31 11.9 26.1 245 45 104 5 16 37 1.2 4.7 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-68 48.1 2.35 15.94 13.94 0.19 5.73 8.35 3.27 1.04 0.51 0.09 99.51 117 61 25.5 329 429 14 509 180 32 12.2 25.7 217 50 116 5 19 40 1.2 5.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-69 51.79 2.09 15.64 12.14 0.18 3.6 6.24 4.09 2.13 0.72 0.79 99.41 45 17 22.5 307 825 35 730 195 33 13.9 24 261 37 112 9 32 61 2.1 5.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-70 50.1 1.48 20.8 8.93 0.13 3.73 10.1 3.54 0.87 0.2 0.15 100.03 69 25 20.6 248 331 11 687 114 21 10.1 24.6 91 30 80 4 13 32 1.5 4.3 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-71 47.45 2.72 15.52 15.02 0.21 5.81 8.64 3.25 1.09 0.44 0.27 100.42 110 28 27.1 389 441 17 471 205 37 14 26.2 284 50 126 5 21 37 1.2 5.5 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-72 47.62 2.74 15.28 15.17 0.21 5.09 8.61 3.18 1.16 0.31 0.68 100.05 106 35 29.1 395 445 20 459 208 37 14.2 25.9 298 52 124 6 21 38 1.4 5.3 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-73 48.03 2.73 14.91 15.06 0.21 5.78 8.39 3.22 1.18 0.47 0.48 100.46 110 33 28.9 379 431 22 446 205 36 14 25.8 283 51 125 6 24 42 0.7 4.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-74A 50.35 2.37 18.14 11.96 0.17 3.63 9.13 3.71 1.21 0.49 0.02 101.18 46 8 23.9 329 485 17 606 186 32 13.2 27.9 200 33 103 6 21 39 1.4 4.8 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-75 49.69 2.66 17.01 12.93 0.18 3.44 8.8 3.6 1.38 0.55 0.4 100.64 47 11 26.2 349 526 24 566 205 35 14.1 28.4 302 34 104 8 25 44 1.4 5.4 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-76A 50.44 2.57 15.57 13.41 0.19 4.48 8.13 3.67 1.59 0.69 0.05 100.79 55 1 27.3 353 589 30 560 220 37 14.9 27.3 217 38 112 7 26 53 0.7 5.6 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-77 53.42 2.52 14.52 11.93 0.2 3.36 7.01 3.59 2.22 0.66 0.56 99.99 14 22 27.6 286 784 46 472 273 43 17.4 25.9 250 29 131 9 34 68 2.5 7.4 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-78 53.48 2.51 14.23 11.89 0.21 3.44 7 3.69 2.35 0.85 0.33 99.98 13 23 27.7 269 779 51 468 275 43 17.3 25.7 170 31 129 11 35 67 2.4 8.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-79 52.7 2.21 15.15 11.24 0.19 3.64 6.69 3.9 2.36 0.98 0.2 99.26 24 15 23.6 248 858 44 623 244 39 15.4 23.6 137 30 130 9 33 61 2 7.2 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-80 54.9 1.91 15.26 9.81 0.18 2.92 5.72 4.13 2.84 1.27 0.68 99.62 7 13 17.6 172 1023 54 701 253 38 15.7 23.3 47 23 139 11 35 75 1.4 7.6 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Andesite Miranda Flat whole rock Oregon MB97-81 51.12 2.54 14.5 12.5 0.2 3.89 7.2 3.73 2.07 0.69 1.44 99.88 24 26 27.7 345 686 35 474 242 40 16.3 24.8 147 35 126 8 29 61 1.7 6.8 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-82 49.7 2.49 15.55 13.24 0.2 5.01 7.44 3.62 1.78 0.62 -0.03 99.62 80 31 26.4 340 713 31 548 237 39 15.8 25.8 167 42 135 7 29 56 1.4 5.4 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-83 50.04 2.46 15.2 13.18 0.19 4.82 7.26 3.75 1.81 0.62 -0.31 99.02 79 33 24.5 318 745 30 543 240 39 16 26.6 185 40 127 7 30 59 1.8 5.7 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-84 53.05 1.95 15.73 10.82 0.17 3.94 6.69 3.88 2.2 0.72 0.32 99.47 44 16 20.4 251 784 40 661 212 32 14 24.7 96 33 121 9 30 59 2.3 5.4 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-85 53.11 2.06 15.73 10.91 0.18 3.63 6.44 4 2.31 0.71 0.38 99.46 30 16 19.7 239 847 43 678 220 33 14.1 24.3 80 29 121 10 29 64 2.4 7.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-86 52.81 2.07 16 11.24 0.17 3.87 6.64 4.08 2.08 0.76 -0.05 99.67 40 17 20.8 262 802 35 675 211 32 13.7 24.4 74 33 119 8 27 56 1.7 7.1 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-88 47.54 2.34 15.58 14.08 0.18 5.36 8.11 3.4 1.14 0.49 0.97 99.19 130 35 27.3 372 430 18 512 178 32 12.5 24.7 184 47 122 6 18 36 1.1 4 16.58 16.13 42.80358028 -118.5450864 0.01 Volcanic Basalt Miranda Flat whole rock Oregon MB97-41 48.81 1.7 19.98 10.01 0.13 3.88 9.45 3.45 0.82 0.37 3.01 101.61 62 24 21.2 268 336 13 648 108 22 8.6 24 139 35 87 4 12 26 0.9 3.4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-54 50.07 2.47 15.68 14.12 0.2 4.37 8.3 3.43 1.37 0.33 0.55 100.89 40 19 26.7 419 542 28 514 188 34 12.8 25.3 260 42 121 8 22 45 2.1 5.3 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-60 48.1 2.34 16.42 12.33 0.17 5 8.48 3.33 1.13 0.37 1.08 98.75 72 29 26.1 365 436 18 535 174 33 12.7 25.3 200 40 103 5 20 45 1.1 4.4 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-61 48.65 2.28 15.69 13.74 0.17 5.04 7.95 3.37 1.31 0.54 0.48 99.22 73 18 25.6 377 471 28 520 175 31 12.4 24.9 204 47 115 6 20 40 1.7 4.7 16.78 15.23 42.7405 -118.4259 0.01 Volcanic Basalt Mickey Butte whole rock Oregon MB97-1 57.37 1.95 13.05 11.15 0.14 2.19 5.31 3.33 2.47 0.38 0.77 98.11 6 16 25.2 287 964 70 313 270 39 15.2 19.6 18 29 129 15 26 58 2.9 6.8 16.51 14.81 43.056 -118.4048 0.01 Volcanic Andesite Folly Farm whole rock Oregon MB97-3A 57.83 1.96 13.24 11.35 0.15 2.21 5.37 3.22 2.67 0.33 0.84 99.17 8 20 24.2 272 927 75 312 274 40 15.3 20.3 17 27 128 15 33 56 3.2 7.8 16.51 14.81 43.056 -118.4048 0.01 Volcanic Andesite Folly Farm whole rock Oregon MB97-4 58.11 1.98 13.09 11.36 0.15 2.23 5.39 3.22 2.55 0.35 0.84 99.27 8 19 24.3 294 999 74 313 272 39 15.5 20.1 18 29 132 15 28 59 1.6 7.6 16.51 14.81 43.056 -118.4048 0.01 Volcanic Andesite Folly Farm whole rock Oregon Method Data 1 DCP-AES 478 2 XRF 479 3 XRF 488 1987-068863 4 AR-AR:Plateau Age:GM 476 5 AR-AR:Plateau Age: PLAG 476 6 SCAN 2007-123678 7 REG_COR 2007-123678 Reference Data georef# 1987-068863 TI Crustal genesis on the Oregon Plateau AU "Carlson, Richard W; Hart, William K" AF "Carnegie Inst. Washington, Dep. Terr. Magn., Washington, DC, UnitedStates (USA)" AF "Miami Univ., United States (USA)" SO "Journal of Geophysical Research, vol.92, no.B7, pp.6191-6206, 10 Jun1987" IS 0148-0227 LA English FE "References: 90; illus. incl. 3 tables, sketch maps" PY 1987 PT Serial; Analytic CP United States (USA) DE absolute age; alkaline earth metals; back-arc basins; basalts; Basinand Range Province; basins; Cenozoic; continental crust; crust; dates;geochemistry; geochronology; igneous rocks; isotopes; K/Ar; lava;lead; magmas; major elements; metals; middle Miocene; Miocene;Nd-144/Nd-143; neodymium; Neogene; North America; Oregon; OregonPlateau; plate tectonics; rare earths; ratios; southeastern Oregon;Sr-87/Sr-86; stable isotopes; strontium; tectonophysics; Tertiary;trace elements; United States; volcanic rocks; volcanism CL "05A Igneous and metamorphic petrology; 02C Geochemistry of rocks,soils, and sediments; 18 Solid-earth geophysics" CY "GeoRef, Copyright 2007, American Geological Institute." UD 1987 AN 1987-068863