170 INDEX 



compared with subaerial rivers, 139 ff 

 concentration of water of, 139, 148 

 controlling slopes of, 137 ff, 146 ff, 



151 



duration of, 140, 143, 146, 147, 148, 

 162 



erosion by, 143, 150 



of the Glacial Period, 137, 138, 147 



graded floors of, 140 



mud suspensions causing, 129 



plunging of, 138, 143, 166 



of the present time, 143 ff, 154 



salinity one cause of, 141 ff, 150 



speeds of, 138, 140, 146, 147, 148, 

 150, 166 



temperature one cause of, 166 



turbulence of, 138, 150 

 Deposits, marine, n ff 

 Depth of isostatic compensation, 31, 32, 



81 

 Depth of ocean, mean, 26 

 Diagnosis, methods of, 4, 13, 18, 27, 34, 



45 



Discontinuities in sediments of continen- 

 tal terraces, 109 



Donaldsonville, Louisiana, 101 



Downwarping, in relation to the conti- 

 nental terrace, 10 

 under ice-caps. See Basining 



Dredge, deep-sea, 11 



"Drowned" atolls, 75 



Dry land, conditions for, 6 



Eakin, H. M., 166 

 Earth 



cooling of, 58 



dimensions of, 7 



figure of, 24 ff 



plasticity of, 4, 45 



pressures in, 16 

 Earthquake in Turkey, 15 

 Earthquake waves in the earth's core, 16 



in the mantle overlying the core, 13 ff, 

 58 

 Earthquake waves in the ocean, 134 



comparative rarity and inefficiency of, 

 135 

 Earth-shells, 33, 46, 57, 59, 96 

 Easter Island, 50 



East Indian archipelago 

 exploration of, 49 

 intensity of gravity in, 80, 82 ff 

 mountain-chain of, 80, 82 ff, 90, 94, 



98 

 submarine shelves of, 8 



Eaton, H. N., on silty bottom currents 

 in Lake Mead, 145 



Ebro River delta, asymmetry of, 103 



Echo-sounding, 6, 7, 99 



Elastic waves. See Earthquake waves; 

 Waves 



Elephant Butte Reservoir, silty bottom 

 currents in, 146 



Ellipsoid, standard, 25 



Erosion of continental slopes. See Can- 

 yons; Furrowing 



Erosion of continents, disturbing isostasy, 



32 

 Eruptibility of vitreous basalt, 60 

 Escher, B. G., 54 

 Etna, lava column of Mount, 61 

 Eustatic (world-wide) shifts of sealevel, 



128, 131, 136 

 Everest, Mount, explanation of height of, 



93 

 Evisceration of volcanic islands in the 



ocean, 53 

 Ewing, M., 106, 166 

 Experiments 



Nature's, with ice-caps, 34, 43, 44 



of P. H. Kuenen on density currents, 

 i48ff 

 Explosions, at oceanic islands, 51, 52 



Jf ail-off of the continental terrace, 9, 



100 

 Faults, and the continental terrace, 10 

 Fennoscandia 



gravity anomalies in, 42 



upwarping of, after deglaciation, 35, 

 37 ff, 41 

 Fennoscandian ice-cap 



area of, 34 



basining of the earth's crust by, 35 



center of, 35, 38 



current upheaval of, 41 



flow-lines of, 36 



future upheaval of, 41 



thickness of, 40 



