Date File Created Name of Creator 4/30/2006 Rich Gaschnig GeoRef Data 2005-033633 DN GeoRef TI "The Juniper Mountain volcanic center, Owyhee County, southwesternIdaho; age relations and physical volcanology" AU "Manley, Curtis R; McIntosh, William C" AF "Arizona State University, Department of Geological Sciences, Tempe,AZ, United States USA" AF "New Mexico Bureau of Mines, 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.205-228, May 2004" CD #06513 IB 1557650292 RP 30 LA English FE "References: 65; illus. incl. 3 tables, geol. sketch maps" PY 2004 PT Serial; Report; Analytic CP United States USA FC Compact disc LL "Latitude:N420000,N430000 Longitude:W1163000,W1173000" DE absolute age; Ar/Ar; Cenozoic; dates; Idaho; igneous rocks; JuniperMountain; lava flows; mineral composition; Miocene; Neogene; OwyheeCounty Idaho; phenocrysts; pyroclastics; rhyolites; Snake River plain;Tertiary; tuff; United States; volcanic centers; volcanic features;volcanic fields; volcanic rocks; volcanism; Yellowstone Hot Spot CL "05A, Igneous and metamorphic petrology" CY "GeoRef, Copyright 2005, American Geological Institute." UD 200512 AN 2005-033633 Sample Data Item Age Max_age Min_age SiO2 TiO2 Al2O3 FeOT MnO MgO CaO Na2O K2O P2O5 Ba Rb Sr Zr SiO2 TiO2 Al2O3 FeOT MnO MgO CaO Na2O K2O P2O5 Ba Rb Sr Zr Location_Name source_proximity Volcanic_Field Rock_Class Rock_Type Sample_Description Age Max_age Min_age LatDD LongDD Loc_prec Location_Quad Material State Units Ma Ma Ma wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % ppm ppm ppm ppm wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % ppm ppm ppm ppm Ma Ma Ma DD DD Method 1 1 1 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 4 4 4 5 5 Sample Name 92-328 13.65 13.69 13.61 Owhyee River Canyon proximal "Juniper Mountain volcanic center, Garat Crossing Lava Flow" rhyolite volcanic 42.1858 -116.5058 0.001 Piute Basin East 7.5' whole rock ID 92-280 13.73 13.81 13.65 The Badlands proximal "Juniper Mountain volcanic center, Badlands Lava Flow" rhyolite volcanic 42.3377 -116.7312 0.001 Brace Flat 7.5' whole rock ID 92-325 13.77 13.89 13.65 Mill Creek proximal "Juniper Mountain volcanic center, rhyolite of Mill Creek" rhyolite volcanic 42.7667 -116.8546 0.001 Combination Ridge whole rock ID 91-252 13.82 13.87 13.77 78.3 0.12 11.5 1.27 0.01 0 0.37 3.09 5.28 0.02 98 265 11 204 Carter Creek distal "Juniper Mountain volcanic center, Beaver Creek Tuff" welded airfall tuff volcanic 42.3687 -116.7479 0.001 Brace Flat 7.5' whole rock ID 89-126 13.83 13.87 13.79 Owhyee River Canyon proximal "Juniper Mountain volcanic center, rhyolite of Petition Reservoir" rhyolite volcanic 42.2188 -116.5618 0.001 Piute Basin East 7.5' whole rock ID 92-308 13.83 13.89 13.77 Juniper Mountain summitt proximal "Juniper Mountain volcanic center, Upper Lobes Lava Flows" rhyolite volcanic 42.4616 -116.8732 0.001 Smith Creek 7.5' whole rock ID 92-316 13.89 13.94 13.84 Carter Spring proximal "Juniper Mountain volcanic center, Carter Spring Rhyolite" rhyolite volcanic 42.3625 -116.732 0.001 Brace Flat 7.5' whole rock ID 91-211 13.89 14 13.78 NE of Squaw Creek proximal "Juniper Mountain volcanic center, Lower Lobes Lava Flow" rhyolite volcanic 42.4854 -116.9162 0.001 Bedstead Ridge 7.5' whole rock ID 91-204 13.9 13.95 13.85 NE of Squaw Creek proximal "Juniper Mountain volcanic center, Upper Lobes Lava Flow" rhyolite volcanic 42.5013 -116.9045 0.001 Fairylawn 7.5' whole rock ID 92-303 13.95 14.01 13.89 Bat Spring proximal "Juniper Mountain volcanic center, Lower Lobes Lava Flow" rhyolite volcanic 42.565 -116.6628 0.001 Slack Mountain 7.5' whole rock ID 92-322 14.09 14.19 13.99 Three Forks proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, upper unit" tuff volcanic 42.5767 -117.1833 0.001 Three Forks 7.5' whole rock OR 92-297 14.1 14.16 14.04 North Fork Crossing proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, upper unit" rhyolite volcanic reinterpreted as a rhyolite lava flow 42.5878 -116.9763 0.001 Fairylawn 7.5' whole rock ID 92-330 14.15 14.26 14.04 Crutcher Crossing proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff" tuff volcanic 42.2507 -116.8738 0.001 Red Basin 7.5' whole rock ID 92-295 14.21 14.34 14.08 East of Jordan Valley proximal "Juniper Mountain volcanic center, Swisher Mountain Rhyolite" rhyolite volcanic 42.8876 -116.8767 0.001 Stonehouse Creek 7.5' whole rock ID 92-298 14.22 14.3 14.14 North Fork Crossing proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, lower unit" rhyolite volcanic reinterpreted as a rhyolite lava flow 42.5964 -117.9925 0.001 Fairylawn 7.5' whole rock ID 92-302 14.31 14.37 14.25 mouth of Deep Creek proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff" tuff volcanic 42.5779 -116.6992 0.001 Slack Mountain 7.5 whole rock ID 92-321 14.48 14.52 14.44 Three Forks proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, lower unit" tuff volcanic 42.5779 -117.1847 0.001 Three Forks 7.5 whole rock OR 92-324 68.5 0.54 17.4 3.06 0.04 0.34 1.36 3.22 5.33 0.2 1283 174 105 463 West Hawkins Trail near Three Forks proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, lower unit" tuff volcanic crystalline 14.48 14.52 14.44 42.5767 -117.1833 0.1 whole rock OR 92-323 74.3 0.46 12.8 2.56 0.02 0.17 0.95 3.27 5.38 0.09 1700 182 92 485 West Hawkins Trail near Three Forks proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, upper unit" tuff volcanic crystalline 14.09 14.19 13.99 42.5767 -117.1833 0.1 whole rock OR 89-106 72.1 0.51 13.9 2.9 0.03 0.07 1.19 3.9 5.31 0.09 2019 163 112 634 North Fork Crossing proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, lower unit" rhyolite volcanic crystalline; reinterpreted as a lava flow 14.22 14.3 14.14 42.5964 -117.9925 0.1 whole rock ID 89-107 74.5 0.42 12.9 2.71 0.01 0 0.7 3.19 5.5 0.04 1109 195 64 443 North Fork Crossing proximal "Juniper Mountain volcanic center, Swisher Mountain Tuff, upper unit" rhyolite volcanic crystalline; reinterpreted as a lava flow 14.1 14.16 14.04 42.5964 -117.9925 0.1 whole rock ID 92-285 71.8 0.57 13.6 3.19 0.03 0.33 1.52 3.62 5.29 0.11 1325 173 109 472 Wood Canyon proximal "Juniper Mountain volcanic center, Swisher Mountain Rhyolite" rhyolite volcanic crystalline 14.21 14.34 14.08 42.9619 -116.9656 0.1 whole rock ID 89-80 75.2 0.35 12.7 2.48 0.03 0.01 0.46 3.22 5.53 0.01 841 201 40 421 Bat Spring proximal "Juniper Mountain volcanic center, Lower Lobes Lava Flow" rhyolite volcanic crystalline 13.95 13.01 13.89 42.565 -116.6628 0.1 whole rock ID 89-54 75.3 0.31 12.7 2.25 0.02 0.02 0.57 3.25 5.48 0.02 827 201 41 381 Squaw Creek proximal "Juniper Mountain volcanic center, Lower Lobes Lava Flow" rhyolite volcanic crystalline 13.89 14 13.78 42.5013 -116.9045 0.1 whole rock ID 89-65 77 0.23 12.2 1.87 0.01 0 0.34 2.95 5.4 0.01 483 210 23 302 Squaw Creek proximal "Juniper Mountain volcanic center, Upper Lobes Lava Flows" rhyolite volcanic crystalline 13.9 13.95 13.85 42.5013 -116.9045 0.1 whole rock ID 89-26 78.1 0.13 12 1.4 0.02 0 0.31 2.87 5.22 0 48 280 3 212 Little Smith Creek proximal "Juniper Mountain volcanic center, Upper Lobes Lava Flows" rhyolite volcanic crystalline 13.83 13.89 13.77 42.501 -116.8557 0.1 whole rock ID 89-125 77.5 0.1 12.1 1.37 0.02 0 0.21 3.43 5.28 0.01 33 327 0 180 Owyhee Canyon proximal "Juniper Mountain volcanic center, rhyolite of Petition Reservoir" rhyolite volcanic crystalline 13.83 13.87 13.79 42.1858 -116.5058 0.1 whole rock ID 91-215 76.9 0.11 12.2 1.31 0.01 0 0.41 3.32 5.64 0.07 82 294 15 212 Carter Spring proximal "Juniper Mountain volcanic center, Carter Spring Rhyolite" rhyolite volcanic crystalline; spatter ring 13.89 13.94 13.84 42.3625 -116.732 0.1 whole rock ID 90-171 76.8 0.11 12.2 1.36 0.02 0 0.63 3.13 5.78 0.01 65 287 7 207 Carter Spring proximal "Juniper Mountain volcanic center, Carter Spring Rhyolite" rhyolite volcanic vitrophyric; lava flow 13.89 13.94 13.84 42.3625 -116.732 0.1 whole rock ID 92-288 72.9 0.56 14.2 1.68 0.01 0 1.25 3.93 5.34 0.1 1517 178 112 553 Mill Creek proximal "Juniper Mountain volcanic center, rhyolite of Mill Creek" rhyolite volcanic crystalline 13.77 13.89 13.65 42.7667 -116.8546 0.1 whole rock ID 91-249 78.1 0.11 11.8 1.25 0.02 0 0.39 3.28 4.99 0.02 146 302 12 171 Badlands proximal "Juniper Mountain volcanic center, Badlands Lava Flow" rhyolite volcanic crystalline; aphyric 13.73 13.81 13.65 42.3377 -116.7312 0.1 whole rock ID 90-177R 74.9 0.31 12.7 2.16 0.03 0.12 1.03 2.9 5.78 0.05 567 242 52 308 Badlands proximal "Juniper Mountain volcanic center, Badlands Lava Flow" rhyolite volcanic vitrophyric; phenocryst-rich 13.73 13.81 13.65 42.3377 -116.7312 0.1 whole rock ID 89-120 75.9 0.3 12.3 1.98 0.02 0.08 0.86 2.74 5.78 0.02 605 209 47 282 Garat Crossing proximal "Juniper Mountain volcanic center, Garat Crossing Lava Flow" rhyolite volcanic vitrophyric 13.65 13.69 13.61 42.1844 -116.509 0.1 whole rock ID 60NC145 74.2 0.29 12.8 2.41 0.04 0.36 0.99 2.96 5.91 0.04 820 40 400 Circle Creek proximal "Juniper Mountain volcanic center, Circle Creek Rhyolite" rhyolite volcanic vitrophyric 11.9 12.4 11.4 41.8333 -116.4003 0.1 whole rock NV Method Data 1 AR-AR:SAN 476 2 XRF 299 3 XRF 180 4 REG_COR 299 5 TABLE 2005-033633