Created 8.2.06 Cody Georef Data 2005-022484 BK "Geologic map of the Ridgefield Quadrangle, Clark and Cowlitz Counties, Washington." BA Evarts-Russell-C; Dinterman-Philip (compiler); Block-Jessica (compiler) BF "U. S. Geological Survey, USA, United States" SO Scientific Investigations Map. 2004. PB "U. S. Geological Survey, United States. Pages: 22, 1 sheet. 2004." RP USGS (Publications of the U. S. Geological Survey) CP United-States PY 2004 LA English AB "This map is located just east of the Columbia River about 30 km north of Portland, Oregon. Bedrock, exposed only in the north part of the quadrangle, consists of eroded and tilted Paleogene volcanic rocks unconformably overlain by lava flows of the Miocene Columbia River Basalt Group and by sedimentary deposits that accumulated in the late Neogene Portland Basin. In most areas, the older deposits are covered by either slack-water silt deposited by latest Pleistocene Missoula floods or by Holocene alluvium." DE areal-geology; bedrock-; Clark-County-Washington; Columbia-River-basin; Cowlitz-County-Washington; geologic-maps; landforms-; lithostratigraphy-; maps-; petrology-; Ridgefield-Quadrangle; stratigraphic-units; surficial-geology; tectonic-elements; United-States; USGS-; volcanism-; Washington- CC 14-Geologic-maps DT Map; Serial; Report BL Monograph MC LAT: N454500; N455230; LONG: W1223730; W1224500. MS "1:24,000" MP color-geologic-maps IL Refs: 110; illus. incl. sects. RF "GeoRef, Copyright 2005, American Geological Institute." CO #06453 RN SIM-2844 AV "U. S. Geol. Surv., Denver, CO, United States" UR (Full text) http://pubs.usgs.gov/sim/2004/2844/ AN 2005-022484 UD 200509 Sample Data Item Rock_Class Rock_Type Material Age long lat loc_prec SiO2 TiO2 Al2O3 FeOT MnO MgO CaO Na2O K2O P2O5 total loi Ba La Ce Rb Sr Y Zr Nb Cr Ni Cu Zn plag cpx opx Fe-ox gm state Units Ma DD DD DD wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% wt% ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm mode% mode% mode% mode% mode% Method 2 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 4 4 4 4 Sample Name 97LC-Q62B2 Andesite volcanic whole rock 34 -122.7090 45.8740 0.0010 57.85 1.59 16.01 9.11 0.21 3.25 6.84 3.89 0.94 0.30 99.46 1.14 238 27 328 26 186 16 13 110 90 0.7 0.1 99.2 Washington 98LC-Q281C Andesite volcanic whole rock 34 -122.7040 45.8700 0.0010 60.24 1.44 16.48 7.44 0.17 2.74 5.54 3.91 1.72 0.33 99.53 3.05 272 25 317 31 227 19 17 102 79 10.4 1.2 0.8 87.6 Washington 98LC-Q281B Andesite volcanic whole rock 34 -122.7110 45.8700 0.0010 60.91 1.85 15.32 8.23 0.19 2.28 4.96 4.20 1.60 0.46 99.29 3.15 297 31 292 33 264 20 11 75 92 0.1 99.9 Washington 01LC-Q459C Andesite volcanic whole rock 34 -122.7040 45.8700 0.0010 60.37 1.57 15.78 7.47 0.17 2.41 5.66 4.63 1.28 0.66 98.28 261 21 58 28 331 36 203 17 1 2 32 98 0.9 0.2 0.1 0.2 98.6 Washington 00LC-Q422B Andesite volcanic whole rock 34 -122.7050 45.8740 0.0010 62.56 1.42 15.41 7.00 0.10 2.27 4.71 4.58 1.61 0.34 99.37 305 14 46 29 294 33 247 16 7 6 67 88 11.4 1.3 1.4 0.4 85.5 Washington 97LC-Q61B Dacite volcanic whole rock 34 -122.5020 45.8740 0.0010 63.78 1.18 15.87 6.12 0.12 1.82 4.29 4.71 1.76 0.36 99.94 1.86 297 28 283 32 290 20 5.2 0.8 1.2 0.2 92.6 Washington 99LC-Q397 Basaltic andesite volcanic whole rock 34 -122.6992 45.0000 0.0010 52.90 1.48 16.56 11.19 0.21 4.46 9.22 3.33 0.48 0.16 100.20 142 8 16 6 301 27 89 6 Washington 99LC-Q428 Basaltic andesite volcanic whole rock 34 -122.6226 46.8603 0.0010 54.86 1.76 16.42 8.81 0.16 4.53 8.58 3.45 1.07 0.35 99.68 237 44 60 13 335 32 209 15 Washington Method Data 1 XRF 16 2 Reg_Cor 2005-022484 3 table 2005-022484 4 point_count 2005-022484