Legend (general_mapservices/geology_seismic)

Active Faults, Known or Suspected (DNR) (1) Visible fault trace Inferred fault trace Concealed fault trace Seismogenic Folds, Known or Suspected (DNR) (2) Visible fold trace Inferred fold trace Concealed fold trace Earthquakes by Magnitude (DNR) (3) 6.1 - 7.1 5.1 - 6.0 4.1 - 5.0 3.0 - 4.0 Fault Trenches (DNR) (4) Seismic Design Categories (Using Site Class Mapping) (DNR) (6) B C D0 D1 D2 F Ice Water Seismic Design Categories (Assuming Site Class D) (DNR) (7) B C D0 D1 D2 F Ice Water NEHRP Seismic Site Class (DNR) (8) B B-C C C-D D D-E E F ice water Liquefaction Susceptibility (DNR) (9) High Moderate to high Moderate Low to moderate Low Very low to low Very low Bedrock Peat Ice Water Faults 100K (DNR) (11) Normal fault - Identity and existence certain, location accurate. Bar and ball on downthrown block [43] Normal fault - Identity or existence questionable, location accurate. Bar and ball on downthrown block [46] Normal fault - Identity and existence certain, location approximate. Bar and ball on downthrown block [44] Normal fault - Identity or existence questionable, location approximate. Bar and ball on downthrown block [47] Normal fault - Identity and existence certain, location inferred. Bar and ball on downthrown block [55] Normal fault - Identity and existence certain, location concealed. Bar and ball on downthrown block [45] Low-angle normal fault - Identity and existence certain, location accurate. Rectangles on upper plate [31] Low-angle normal fault - Identity or existence questionable, location approximate. Rectangles on upper plate [35] Low-angle normal fault - Identity and existence certain, location concealed. Rectangles on upper plate [33] Reverse fault - Identity and existence certain, location accurate. R on upthrown block [37] Reverse fault - Identity or existence questionable, location approximate. R on upthrown block [41] Reverse fault - Identity and existence certain, location concealed. R on upthrown block [39] Thrust fault - Identity and existence certain, location accurate. Sawteeth on upper plate [7] Thrust fault - Identity or existence questionable, location accurate. Sawteeth on upper plate [10] Thrust fault - Identity and existence certain, location approximate. Sawteeth on upper plate [8] Thrust fault - Identity or existence questionable, location approximate. Sawteeth on upper plate [11] Thrust fault - Identity and existence certain, location inferred. Sawteeth on upper plate [50] Thrust fault - Identity and existence certain, location concealed. Sawteeth on upper plate [9] Thrust fault - Identity or existence questionable, location concealed. Sawteeth on upper plate [12] Right-lateral strike-slip fault - Identity and existence certain, location accurate. Arrows show relative motion [13] Right-lateral strike-slip fault - Identity and existence certain, location approximate. Arrows show relative motion [14] Right-lateral strike-slip fault - Identity or existence questionable, location approximate. Arrows show relative motion [17] Right-lateral strike-slip fault - Identity and existence certain, location inferred. Arrows show relative motion [51] Right-lateral strike-slip fault - Identity and existence certain, location concealed. Arrows show relative motion [15] Left-lateral strike-slip fault - Identity and existence certain, location accurate. Arrows show relative motion [19] Left-lateral strike-slip fault - Identity and existence certain, location approximate. Arrows show relative motion [20] Left-lateral strike-slip fault - Identity and existence certain, location inferred. Arrows show relative motion [52] Left-lateral strike-slip fault - Identity and existence certain, location concealed. Arrows show relative motion [21] Normal right-lateral strike-slip fault - Identity and existence certain, location accurate. Arrows show relative horizontal motion; bar and ball on downthrown block [78] Normal right-lateral strike-slip fault - Identity and existence certain, location inferred. Arrows show relative horizontal motion; bar and ball on downthrown block [59] Normal right-lateral strike-slip fault - Identity and existence certain, location concealed. Arrows show relative horizontal motion; bar and ball on downthrown block [80] Normal left-lateral strike-slip fault - Identity and existence certain, location accurate. Arrows show relative horizontal motion; bar and ball on downthrown block [72] Fault, unknown offset - Identity and existence certain, location accurate [1] Fault, unknown offset - Identity or existence questionable, location accurate [4] Fault, unknown offset - Identity and existence certain, location approximate [2] Fault, unknown offset - Identity or existence questionable, location approximate [5] Fault, unknown offset - Identity and existence certain, location inferred [49] Fault, unknown offset - Identity and existence certain, location concealed [3] Fault, unknown offset - Identity or existence questionable, location concealed [6] Fracture - Identity and existence certain, location accurate [25] Fracture - Identity and existence certain, location concealed [27] Folds 100K (DNR) (12) Anticline - Identity and existence certain, location accurate [1] Anticline - Identity or existence questionable, location accurate [4] Anticline - Identity and existence certain, location approximate [2] Anticline - Identity and existence certain, location inferred [37] Anticline - Identity and existence certain, location concealed [3] Overturned anticline - Identity and existence certain, location accurate [7] Overturned anticline - Identity and existence certain, location approximate [8] Overturned anticline - Identity and existence certain, location concealed [9] Syncline - Identity and existence certain, location accurate [13] Syncline - Identity and existence certain, location approximate [14] Syncline - Identity and existence certain, location inferred [39] Syncline - Identity and existence certain, location concealed [15] Overturned syncline - Identity and existence certain, location accurate [19] Overturned syncline - Identity and existence certain, location approximate [20] Overturned syncline - Identity and existence certain, location concealed [21] Monocline, anticlinal bend - Identity and existence certain, location accurate [31] Monocline, anticlinal bend - Identity and existence certain, location approximate [32] Monocline, anticlinal bend - Identity and existence certain, location concealed [33] Monocline, synclinal bend - Identity and existence certain, location accurate [25] Monocline, synclinal bend - Identity and existence certain, location concealed [27] Age Dates 100K (DNR) (13) Attitude Measurements 100K (DNR) (14) Contacts 100K (DNR) (15) Contact - Identity and existence certain, location accurate [1] Contact - Identity and existence certain, location approximate [6] Contact - Identity and existence certain, location inferred [9] Contact - Identity and existence certain, location concealed [2] Contact - Scratch boundary [3] Gradational contact - Identity and existence certain, location accurate [4] Shoreline [5] Quadrangle boundary [7] Glacial ice boundary [8] Cross section boundary [10] Geologic Units 100K (DNR) (16) Quaternary alluvium, dune sand, loess, and artificial fill Quaternary alluvial fans, beach deposits, undifferentiated sedimentary deposits, lacustrine deposits, landslides, peat, terraced deposits, and talus Quaternary Lake Bonneville flood deposits Quaternary sedimentary deposits, undivided Quaternary older alluvial fans and older alluvium Quaternary alpine glacial deposits, Fraser-age or younger Pleistocene continental glacial, glaciolacustrine, and outburst flood deposits, Fraser-age Pleistocene alpine glacial deposits, pre-Fraser Pleistocene continental glacial deposits, pre-Fraser Quaternary-Miocene continental sedimentary rocks Quaternary-Oligocene continental sedimentary rocks Pliocene-Miocene continental sedimentary rocks Oligocene-Eocene continental sedimentary rocks Eocene continental sedimentary rocks Tertiary continental sedimentary rocks Tertiary-Cretaceous continental sedimentary rocks Cretaceous continental sedimentary rocks Pliocene-Miocene nearshore sedimentary rocks Miocene nearshore sedimentary rocks Oligocene-Eocene nearshore sedimentary rocks Eocene nearshore sedimentary rocks Cretaceous nearshore sedimentary rocks Cretaceous-Jurassic nearshore sedimentary rocks Triassic nearshore sedimentary rocks Pliocene-Oligocene marine sedimentary rocks Miocene-Eocene marine sedimentary rocks and breccias Oligocene-Eocene marine sedimentary rocks Eocene-Paleocene marine sedimentary rocks Cretaceous marine sedimentary rocks Cretaceous-Jurassic marine sedimentary rocks Jurassic-Triassic sedimentary rocks Paleozoic sedimentary rocks Tertiary-Cretaceous breccias Jurassic-Devonian sedimentary and volcanic rocks Tertiary-Cretaceous volcanic and sedimentary rocks Cretaceous-Jurassic volcanic, volcaniclastic, and mixed volcanic and sedimentary rocks Quaternary volcanic rocks Quaternary and Quaternary-Pliocene undifferentiated volcanic rocks Quaternary-Pliocene volcanic rocks Quaternary-Tertiary volcanic rocks Pliocene-Oligocene volcanic rocks Miocene Columbia River Basalt Group, Saddle Mountains Basalt Miocene Columbia River Basalt Group, Wanapum Basalt Miocene Columbia River Basalt Group, Grande Ronde Basalt Miocene Columbia River Basalt Group, Imnaha Basalt Miocene invasive lavas, mostly of the Columbia River Basalt Group Miocene-Eocene volcanic rocks Oligocene-Ecocene volcanic rocks Eocene volcanic rocks Mesozoic volcanic rocks Quaternary volcaniclastic rocks, tuffs, lahars, and pyroclastic rocks Pliocene-Oligocene volcaniclastic rocks, lahars, tuffs, and tuff breccias Miocene-Oligocene volcaniclastic rocks Oligocene-Eocene volcaniclastic rocks, tuffs, and tuff breccias Eocene volcaniclastic rocks, tuffs, and tuff breccias Quaternary intrusive igneous rocks Quaternary-Pliocene intrusive igneous rocks Pliocene-Miocene intrusive igneous rocks Pliocene-Oligocene intrusive igneous rocks Miocene-Oligocene intrusive igneous rocks Oligocene-Paleocene intrusive igneous rocks Eocene-Paleocene intrusive igneous rocks Tertiary-Cretaceous intrusive igneous rocks Tertiary-Cretaceous and Cretaceous intrusive igneous rocks Mesozoic intrusive igneous rocks Triassic-Permian intrusive igneous rocks Paleozoic intrusive igneous rocks Precambrian intrusive igneous rocks Mesozoic-Paleozoic ultramafic rocks Tertiary-Cretaceous metasedimentary and metavolcanic rocks Cretaceous metavolcanic rocks Cretaceous-Jurassic metacarbonate Cretaceous-Jurassic marine metasedimentary and metavolcanic rocks Jurassic-Precambrian metamorphic rocks and hornfels pre-Jurassic-Precambrian metasedimentary rocks Triassic-Permian marble Mesozoic metasedimentary rocks Mesozoic metasedimentary and metavolcanic rocks Permian-Devonian metasedimentary and metavolcanic rocks Permian and pre-Permian metasedimentary rocks Carboniferous-Precambrian quartzite Devonian-Silurian marine metasedimentary rocks Ordovician-Cambrian metacarbonate Ordovician-Precambrian metacarbonate Cambrian-Precambrian quartzite Paleozoic metacarbonate Paleozoic metasedimentary and metavolcanic rocks Paleozoic-Precambrian metasedimentary and metavolcanic rocks Precambrian metasedimentary rocks Precambrian metasedimentary and metavolcanic rocks Eocene-Paleocene orthogneisses Tertiary-Cretaceous banded gneiss Tertiary-Cretaceous orthogneisses and migmatites pre-Tertiary-Cretaceous orthogneisses and migmatites Cretaceous metamorphic rocks Jurassic schist Jurassic-Permian metamorphic rocks Jurassic-Triassic orthogneisses pre-Jurassic-Permian metamorphic rocks Triassic paragneisses Mesozoic metamorphic rocks Mesozoic orthogneisses and migmatites Mesozoic and older metamorphic rocks pre-Devonian gneiss Paleozoic metamorphic rocks Precambrian metamorphic rocks Deformed rocks in tectonic zones Water Ice