INDEX 



A-bbe, C, 104, 162 



Africa, submarine canyons off the west 



coast of, 134 

 Agassiz, A., 156 



Agassiz, L., demonstrator of ice-caps, 156 

 Airy, G. B., 32, 81 

 Alps, origin of root of, 86 

 Angle of rest for marine deposits, 122, 



151 

 Angenheister, G., investigator of the sub- 

 Pacific crust, 18 

 Anomalies of gravity, 62 



Airy, 32, 81 



Bouguer, 29, 30, 32 



Free-air, 42, 43, 63, 64, 81 



Hayford, 32, 81 



Heiskanen, 32, 81 



Isostatic, 30, 31, 63, 82 



Regional -isosta tic, 81 

 Antarctica, 82, 130 



Apia, Samoa, seismographic station at, 18 

 Aquifers, defined, 132 

 Archipelagoes, 80, 95 

 Arctic Ocean, wave-velocities in crust 



under, 45 

 Aristotle, 4 



Ascension Island, 23, 50, 63 

 Asia, horizontal movement of, 85 

 Asiatic chains of mountains, 88 

 Asymmetry of river deltas, 101 ff 

 Atlantic Ocean, velocities of surface 



waves in crust under, 21, 22, 45 



sialic rock under the, 23, 45 



Atolls 



capping beveled mountains, 66 ff, 68 

 lagoons of, tests of crustal stability, 69, 



74 

 Australian continental shelf, 10, 74 

 Azores Islands, continental rocks in, 23 



Jjack-deeps, origin of, 91 

 Baltic Sea, 8, 34, 37 

 Baltimore Canyon, 116 

 Banda Sea, deep basin of, 80, 91 

 Banggai Island, deformed rocks in, 89 

 Banks, marine, 9, 72 

 Barbados Island, uplift of, 95 

 Barrier-reef lagoons, tests of crustal sta- 

 bility, 67 ff, 74 

 "Basal wrecks," 53 

 Basalt, the most abundant lava, 18, 48, 



57 



Basaltic glass, elasticity of, 46 



Basaltic layers of the earth's crust, 21. 

 See Substratum 



Basaltic substratum of earlier epochs, 58 



Basement Complex, structure and history 

 of, 3 



Basining of the earth's crust, under ice- 

 caps, 34, 35. 44, 157 



Baton Rouge, Louisiana, 101 



Beaches of Fennoscandia, tilted, 35, 37, 

 40 



Beard, C. N., 162 



Bell, H. S., 141 



Bering Sea, 8 



Berkey, C. P., 88 



[167] 



