Date File Created Name of Creator 5/2/2006 Rich Gaschnig GeoRef Data 2005-033634 DN GeoRef TI Late Miocene, Pliocene, and Pleistocene geology of southwestern Idahowith emphasis on basalts in the Bruneau-Jarbidge, Twin Falls, andwestern Snake River plain regions AU Bonnichsen, Bill; Godchaux, Martha M AF University of Idaho, Idaho Geological Survey, Moscow, ID, UnitedStates USA AF Mount Holyoke College, United States USA MT Tectonic and magmatic evolution of the Snake River Plain volcanicprovince ED Bonnichsen, Bill; White, Craig M; McCurry, Michael AF Idaho Geological Survey, Moscow, ID, United States USA SO Bulletin - Idaho Geological Survey, Report: 30, pp.229-312, May 2004 CD #06513 IB 1557650292 RP 30 LA English FE References: 110; illus. incl. 6 tables, geol. sketch maps PY 2004 PT Serial; Report; Analytic CP United States USA FC Compact disc LL Latitude:N420000,N425000 Longitude:W1140000,W1150500 ;Latitude:N420000,N434000 Longitude:W1150400,W1170200 DE alkaline earth metals; basalts; Bruneau Idaho; Cenozoic; cratons;flood basalts; Idaho; igneous rocks; isotope ratios; isotopes;Jarbridge River; metals; Miocene; Neogene; Nevada; Oregon; OwyheeCounty Idaho; Owyhee Plateau; Pleistocene; Pliocene; Quaternary; SnakeRiver plain; Sr-87/Sr-86; stable isotopes; strontium; Tertiary; TwinFalls County Idaho; United States; volcanic rocks; Wyoming Province CL 05A, Igneous and metamorphic petrology CY GeoRef, Copyright 2005, American Geological Institute. UD 200512 AN 2005-033634 Sample Data Item SiO2 TiO2 Al2O3 Fe2O3T MnO MgO CaO Na2O K2O P2O5 Total Sc Cr Ni Zn Rb Sr Zr Ba V Y Nb Ga Cu Pb La Ce Nd SiO2 TiO2 Al2O3 Fe2O3T MnO MgO CaO Na2O K2O P2O5 Total Sc Cr Co Ni Zn Rb Sr Zr Ba La Ce Nd Location_Name Volcanic_Field Rock_Class Age Max_age Min_age LatDD LongDD Loc_prec Rock_Type Material State Units 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 wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Ma Ma Ma DD DD Method 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 5 5 Sample Name I-2249 48.82 1.4 15.2 12.25 0.18 8.84 11.91 2.24 0.2 0.21 101.25 41 509 143 85 2 137 79 137 280 31 8 20 83 4 0 19 Western Snake River Plain, Twin Falls area dike basalt 8 5 42.4541 -114.3911 1 volcanic whole rock ID I-3234 47.9 1.88 16.04 12.52 0.2 7.7 10.78 2.4 0.38 0.35 100.15 35 259 53 35 89 11 360 70 180 16 35 24 Western Snake River Plain, Twin Falls area basalt of Sonnickson Butte basalt 8 5 42.6699 -114.546 0.1 volcanic whole rock ID I-3309 45.96 3.36 13.61 16.59 0.23 6.57 9.7 2.55 0.6 0.79 99.96 31 158 57 55 161 19 215 150 315 29 65 28 Western Snake River Plain, Twin Falls area basalt of Sucker Flat ferrobasalt 4.6 4.9 4.3 42.3722 -114.5994 0.1 volcanic whole rock ID I-3209 46.35 2.98 14.55 15.44 0.21 7.41 9.67 2.59 0.58 0.6 100.38 30 222 63 148 320 100 250 21 47 31 Western Snake River Plain, Twin Falls area basalt of Rock Creek basalt 5 0.01 42.4541 -114.3911 0.1 volcanic whole rock ID I-3207 46.02 3.27 13.97 16.27 0.22 7.15 9.66 2.67 0.57 0.56 100.36 30 231 63 148 320 100 250 19 42 26 Western Snake River Plain, Twin Falls area basalt of Stricker Butte ferrobasalt 5 0.01 42.4699 -114.3598 0.1 volcanic whole rock ID I-3302 48.09 2.69 14.94 14.33 0.19 6.51 9.63 2.64 0.67 0.49 100.18 29 184 67 69 127 18 220 120 295 25 54 33 Western Snake River Plain, Twin Falls area basalt of Canyon Hill olivine tholeiite basalt 5 0.01 42.4261 -114.7991 0.1 volcanic whole rock ID I-3367 44.43 4.17 11.47 19.11 0.29 5.1 9.85 2.21 0.89 1.94 99.46 36 78 50 55 265 13 310 270 655 75 162 80 Western Snake River Plain, Twin Falls area basalt of Lincoln Hill ferrobasalt 5 0.01 42.8581 -114.4841 0.1 volcanic whole rock ID I-3377 46.03 3.32 13.78 16.34 0.23 6.02 9.57 2.74 0.74 0.89 99.66 31 105 54 52 185 13 315 170 490 42 88 43 Western Snake River Plain, Twin Falls area basalt of Flat Top Butte ferrobasalt 1.8 0.01 42.7312 -114.4131 0.1 volcanic whole rock ID I-3381 46.49 3.3 13.89 16 0.23 6.63 9.22 2.68 0.75 0.79 99.98 28 188 54 65 167 10 330 150 445 31 68 49 Western Snake River Plain, Twin Falls area basalt of Rocky Hill ferrobasalt 1.8 0.01 42.7289 -114.0781 0.1 volcanic whole rock ID I-3372 47.31 2.27 15.45 13.39 0.2 7.7 10.28 2.71 0.61 0.48 100.4 34 242 55 155 109 18 335 120 255 19 43 29 Western Snake River Plain, Twin Falls area basalt of Notch Butte olivine tholeiite basalt 1.8 0.01 42.6678 -115.1728 0.1 volcanic whole rock ID I-3061 48.38 2.36 15.88 12.56 0.18 7.25 10.59 2.48 0.19 0.32 100.19 34 186 68 116 3 242 127 167 282 32 12 21 42 5 14 38 Western Snake River Plain basalt of Murphy area olivine tholeiite basalt 8 5 43.2183 -116.5514 0.1 volcanic whole rock ID I-3033 46.64 2.9 14.87 14.51 0.21 6.8 10.08 2.52 0.6 0.66 99.79 30 218 54 152 355 130 595 30 65 31 Western Snake River Plain basalt of Dorsey Butte olivine tholeiite basalt 3 0.5 43.0858 -116.0542 0.1 volcanic whole rock ID I-3028 46.1 3.3 14.15 15.87 0.22 6.66 10.18 2.45 0.46 0.65 100.04 31 164 57 145 280 120 320 20 46 27 Western Snake River Plain basaltic tuff of the Feedlot basaltic tuff 3 0.5 43.0195 -116.0671 0.1 volcanic whole rock ID I-2996 48.15 2.92 13.89 14.72 0.2 5.71 11.17 2.35 0.7 0.75 100.56 35 160 62 135 11 298 276 461 245 43 25 21 47 7 29 69 Western Snake River Plain Jackass Butte volcanic field olivine tholeiite basalt 3 0.5 43.0859 -116.2092 0.1 volcanic whole rock ID I-3113 49.35 2.45 14.11 17.15 0.34 2.46 6.85 3.5 2.12 2.01 100.34 38 0 5 265 45 330 564 1149 70 105 88 31 22 0 75 180 Western Snake River Plain basalt of South Side Boulevard ferrobasalt 1.8 0.01 43.3994 -116.5389 0.1 volcanic whole rock ID I-2831 47.94 3.53 13.82 15.23 0.21 5.05 10.18 2.49 0.71 0.63 99.79 31 131 45 173 375 120 375 23 52 27 Western Snake River Plain Castle Butte volcanic complex basalt 1.8 0.01 43.1007 -116.2734 0.1 volcanic whole rock ID I-3674 48.11 3.55 13.88 15.97 0.22 6 9.66 2.32 0.77 0.76 101.24 28 122 47 150 12 320 278 449 338 42 29 23 38 7 38 87 Western Snake River Plain Lizard Butte volcanic complex basalt 1.8 0.01 43.56 -116.7833 0.1 volcanic whole rock ID X-220 47.57 2.55 16.01 13.64 0.2 6.49 9.12 3.08 1.37 0.47 100.5 28 141 55 70 112 30 330 110 415 20 45 30 Western Snake River Plain Birds of Prey basalt field olivine tholeiite basalt 1.8 0.01 43.2126 -116.0997 0.1 volcanic whole rock ID X-362 43.62 4.07 14.13 17.49 0.26 5.38 8.64 3.15 1.35 1.78 99.87 30 35 49 60 208 11 365 200 680 48 111 67 Western Snake River Plain Birds of Prey basalt field ferrobasalt 1.8 0.01 43.2126 -116.0997 0.1 volcanic whole rock ID X-215 48.47 1.99 16.51 11.1 0.17 6.39 9.03 3.41 1.96 0.61 99.64 25 141 50 62 87 46 525 90 555 27 54 31 Western Snake River Plain Birds of Prey basalt field basalt 1.8 0.01 43.2126 -116.0997 0.1 volcanic whole rock ID Method Data 1 XRF 299 2 XRF 74 3 XRF 57 Idaho State University 4 REG_COR 57 large age ranges are based on probable geologic 5 TABLE 2005-033634