Page 375 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

357 ranges, 171 ranges 14 173

depth of, 90-92, 262,270 discovery of, 73 of mid-ocean ridges, 268 of mountain of passive continental margins, 267 properties of, 215-17 seismic reflection and, 37 at subduction zones, 275 reflections Moho in collisional mountain 178 160, horizontal, in passive continental margins, 167-68 Mohorovitié, A., 73 Mohorovici¢ discontinuity. See Moho 175, Basin, Molasse magnitude, Moment 175 Montecci, P. A.,
Index ranges, 259, 274 162-63, 178 (figure) 190-91 171 mountain theory on, anomalies for, 262, (figure), 274 at, 256-59, 260 (figure) and, 37 126 (figure) L18 (figure) 118 117-18 119 (figure) 140 (figure), 171, 178 177, Law of Gravitation, 224 Law of Motion,

at passive continental margins, 251, 253, 267 Mathematical symbols, abbrevia- tions, 343 (table) 192 191, 16, (lower mantle), (figure) 17 description of, 186, 205 earthquakes and, properties of, 217 100,215,319 Metamorphic rocks, Ridge, 25, 92, 95 (figure), 326 (figure), 307 gravity anomalies for, 268-69 for, 272 maps anomaly and, 34 172 132, Middle America Trench, ridges, 20, 21, 24 (figure),

Mercalli Scale,
Mesosphere
19,215

, (table) Mexico, 272 Mid-Atlantic gravity volcanism (figure) Mid;ocean * gravity heat (figure) 304 seismic and, seismic Mid-ocean 33 Migrated (figure) in raypath (figure) Migrated (figure) Migrated anticlines in in raypath See also Minimum 18 LL, Moho, Airy delay
properties of, ridges, 302, of, 286-88 inclination, 286, 287 Magnetic anomalies; field; Magnetization; (table), 296 Remanent mag- 189-91, 199-201 Bouguer ranges, 257, 258 margins, ranges, 259

11,20 classification and flow and, 39 hotspots and, 29 in ocean/ocean subduction zones, properties of, 348-49 in subduction zones, 326 volcanism and, 32, 34 Magma chambers, 27, 38 Magnesium, 215 Magnetic anomalies, 293-97, 299 (figure) across mid-ocean 304 (figure), 305 (figure) Magnetic basement, 296, 297, 299 (figure) Magnetic declination, 286, 287 (figure), 288, 289 (figure) Magnetic dipoles, 285 Magne
Magma, 345 heat 27 overall Magnetic Magnetic poles Makowsky, Y., Manile, heat at at
M

Ridge, 28 (figure), 164 (figure) Ritt, 265-67, 272 160 mass variations. 229 147-50, it 198 177 18 (figure). 19, 24 16, Lithosphere/ boundary; (figure) 17 187, 201. 186, zones, 326 17-20, 37 at continental cratons, 263, 321 rifts, 264, 265 for, 262 ranges, 269 margins. remnant subduction zones, 325 Regional flexure. See boundaries. See isostasy, 237-41. Se also Airy model; Pratt model

Fuca 92,95 (figure), 175 D., Kelvin, W.. 312-13 L., Lame’s constant, 49 velocity changes, Latitude, 227, 228 161, 348 191 Left-lateral strike-slip faults, Lesser Antilles, 272 175, Limestone, 51/319 (table) 17, 16, 15, See alyo asthenosphere tectonics Plate 14 description of, earthquakes and, 204, 205 flow and, 39 propertics of, 215-17 subduction Lithosphere/asthenosphere boundary, continental
Juan de K Karner, G. Keweenawan Klemperer, S. Krakatau, 34 L Lateral Lateral 152 Lava, 35, Lay. T., Lillie, R. J., Liquids, Lithosphere. defined, heat in at at at 267 at Lithospheric Lithospheric Local Local Long-path Love Lower crust, 214

148 123. units,
144-46, 149 (figure) 104 162 ridges, (focus) of earthquakes, 100, 215, 344-49 properties of, Ridge, 25 (figure), 215 177 118-22, 189, focus carthquakes, (figure), 204, 205 of Standard (SI) geophysical properties in, 338-40 (figure), 115 law, 225 168 isostasy isostatic Local 175

Hummocky surfaces, (figure), Hydrophones, 53, Hydrostatic pressure,238 Hyperbolic reflection events defining top of oceanic crust, 171 167, at mid-ocean Hp l I Iceland. 34 Igneous rocks, classification and 345 description of, 346 magnetization of, 296, 298 (figure) thermal conductivity of, 319 (table) volcanism and, 32 Incompressibility, 47, 48 India, 35 Ocean Indian Induced magnetization, 290, 292.

Gravitational attraction. 4 12, 20, 38, 223-37. See also Gravity anomalies: Gravity absolute, 234, 235, 236 measurement of, 234-37 observed, 226, 228, 234 tectonic settings and, 260-76 theoretical, 226-27, 228, 233 Gravity anomalies, 8 (figure), Bouguer 225-34. See also gravity anomaly; Free air gravity anomaly from bodies with simple geome- isostasy local from magnetic anomalies compared with, 296, 297 (

Index defined, 223 modeling of, 244-59 relative, 234, 235-37 tries, 244-51 deviations and, 272-76 for regions in (figure) Gravity anomaly (figure), 285 Groundroll. See T. waves defined, 311 178, 237 gravity anomalies 162-63 (figure), 34-36 Hubbard, S. S., Humayon, M.

356 Gravity, field * Gravity Greenland, Green Grow, J., 167 of Gulf H Hague, A., Halite, 291 Harris, L. D., Hawaiian Heat across plate Heat Heat Heat Herman, A., 204 Himalayan Hindu Hooke'’s Horsts, 24