Page 379 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

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361 (figure) 168, 205, (figure), 119 124 131 20957
incidence sections. See time sections 120 120, Volcanic arcs, 26 (figure), Volcanism. 30, 31-36, 345 (chart) plate hotspot, 21, 29-30, 33 ridge, 31, 32, 33 Volcanoes, 24 (figure), 27.345 177 Wadati-Benioff zone, 204 191 multiples, 175 Waveforms. See Seismic wave- fronts, 54.55 15 method, 235 171 Valley, 27 158 158, 263 National 35-36, 90, 322 (figure) Young’s modulus, 48-49 175 120, pulse.
Index 120 121 11, 348 plate boundary, 32, boundary, 32-34 plate boundary, 32 118, Park, 30, 121, 129 (figure),

Vertical Migrated Vibroseis, 53, Vibroseis Correlation, Vibroseis sweep, 326 Volcanic eruptions, 155 Volcanic rocks, 346 150 andesitic, 34 basaltic, 32, 34 bimodal. 34 convergent 34 divergent 34-36 mid-ocean (figure), 34 thyolitic, 34 transform 103 (chart), 348 137, shield, 35 156 Ww uplift, Waco Wallace, C., T. 152 Water-bottom (figure) 154 B.. Watts, A. forms Wave Wegener, A., d

. Two-dimensional gravity modeling, 158 migration, 138 time, taypath bending effects and, 146-49, 152 (figure), material, 47, 48 Constant, Gravitational seismic sections. (figure) 102, time sections, (figure), 114 148 (figure), 158 (figure) 145 (figure) Ridge Complex, 141-42, 140 (figure) bending effects and, (figure) 167-68 11,20 rift zones, 325 18-20 of, 177 Province. 175 B., 108-10 14
194 Turcotte, D. L.,242 travel velocity effects and, 151 (figure), Underthrusted strata and struc- 177 abbreviations, 337, 340 224,229, 249 147 111, (figure), 146 (figure), (figure), in, Barbados 149 (figure) geometric effects and, Nankai Trough, 155 (figure), 159, mantle, of continental flow and, 321 physical state velocity and, 90-92 Ridge R. Variables, abbreviations, 340-43 Vectors, abbreviati
Tsunamis, 244 Two-dimensional (figure) Two-way (figure) (figure) 187 (figure) U Unbounded tures, * Unit Universal Unmigrated 137-38, inter- Unmigrated inter- anticlines in in raypath Upper crust, waves, 58 Upper heat Uranium, 314 interfaces, v midpoint Valley and VanArsdale, 89 Velocity effects, Velocity Vertical inter- (figure)

Topography, 257, 260, 262, 263 Total magnetic field anomalies, 293-96, 302 magnetic field vector, 286-88 Total faults, 201, 204 Transcurrent (figure) Transform faults, 201, 204 boundaries, 22 Transform plate (figure), 23 (figure), 30 (figure) description of, 29 185, earthquakes at, 31,38, 199-201. 203 (figure) (figure), examples of, 28 (figure) volcanism at, 32 time, 4. See also Two-way Travel time trav

196, 147 (figure). 155-178 158
193, for, 53 177-78 106 interface, 76 155-79 profiles, tectonics 127, 232 magnetization, (sideswipe) migration, 172
190, 144-46, tie effects; focus etfects reflection, horizontaLinterfaces. and, 108, flow equation, 318 state of upper mantle (grain size), 345, 346-47 153-55 169, 177 156 (figure) 178, 269
waves, 4,47 earthquakes and, motions of, 51-52 travel-time curves reflections, S waves. See Shear waves 144, Bow Talwani, M., 92, 244 T-axis intercepts, 67, 68 for reflected waves, 66 for single dipping interface. 87 horizontal Tectonic interpretation reflection, refraction Plate gravity and, 260-76 for igneous rocks, 345 for magmas, 345, 349 reflection W. Curie, 285,297. 300 18-19 volcanism and,

Surface 207 Suture zone Synclines, See also Buried T for seismic for several 80,81 for single of seismic of seismic 90-92 Tectonics. See Tectonic settings seismic Telford, M.. 80, Temperature defined, 311 heat in physical and, (figure) Tesla, 290 Texture 233 Thermal Thermoremanent 300, 301 Thickness 257 elastic, 241 Thorium, 314 effects, (figure) (figure), Thrust snakehead, Tibet

156 150 and, 89 from, 101 107 for,
152, 141, bending and, 211 interfaces and, 162 (figure), 106 106, 117 116, interpreta- (figure), 326 for, 275-76 (figure) interpretation 108 (figure),
faults, Plain, 30, 35-36 mean square velocity and, interface 113 129 110, [10-11 (figure)
177 178 K., thrust Law, 59-60, 62, 64, 70 earthquakes and, 206-7, 209 bending and, 18, 50 waves, 49-50 America, 92, 95 Spheres, gravity anomalies length, 73. 74 (figure), 114 (figure) L11 seismic sections, traces, 114 (figure) 175 171 compressional, 38, 45,46 extensional, 38, 45,46 modulus. See Young's faults, 38, 205 mechanism solutions 198 tectonics and, 201 197-98 reflection 137-55 Sub
Smithson, S. B., Smythe, D. Snakehead (figure) River Snake Snell's taypath foot 116 seismic wave several horizontal 78 single dipping Socorro, New Mexico, 16, Solids, Sound South 258, 276 244-48 Spherical divergence, Spike seismic signal, Spreading centers, 201 Spread (figure) LLL, Stack, 106, fold of, Stacked Stacked seismic (figure), Stacking velocity, Statics corrections, B., Stewart, D

waves waves 162 185, (figure), 204 (figure), 211 . *< 190, 193, 102, (figure) 118 108 for, 269-70 129
interior, 205-18 Reflected Refracted waves (figure), 52 (figure), 211,214 (figure), 215 185. See also seismology using approxi- (figure), focus earthquakes, 189 rocks, 346 188, (figure), of, 214 for, 54 127 116, 117, 107 (figure), 109 (figure) (sideswipe) Nevada Mountains, 27, 92. (table), 322 (figure), 323 (figure), 324 127, ratio, and, 32-34, 36 Slow-spreading ridges, 325-26, 327

Index and earth’s elasticity of, 45-52 reflected. See refracted. See surface. See Surface transmission of, 211 velocity of, 50,51 Earthquake eocismometers, 3-4 Semi-infinite slabs, 244, 248-51 models mations of, 251-59 160 Serpentinite, (table) 319 161 Desert, Shadow zone, 217 Shale, 51, 319 (table) 199-201, 203 causes of, 31 for, Shallow intrusive Shearing stresses, 38, 45, 46 Shear modulus, 48, 51

360 Seismology, gravity Serpa, L., Sevier Shallow 187, epicenter at 103 Sheriff, R. Shield Shipley, H., Short-path Shot gathers, Sierra heat Silica, Silicates, Slab pull Smith, M.J.,