INDEX 



959 



Glacial continued 



formations, Cambrian, 492 

 Permian, 666, 667 

 Pleistocene, 864 



lake deposits, 909 



load, transfer of, 258 



man, -926 



period, 846 

 cause of, 894 

 duration of, 890 

 time since, 894 



planation, 856 



striation, 856 

 Glaciated area, 846 



re-peopling of, 935 



rock surfaces, 268 



valleys, characteristics of, 909 

 Glaciation and life, 914 



criteria of, 849 



in western mountains, 908 



of Europe, 849 

 Glacier ice, 231 



structure of, 229, 275 



motion, 238, 280-286 

 Glacier movement and temperature, 



239 

 Glaciers, backward slope of, 286 



deposition by, 262, 864 



dimensions of, 237 



drainage of, 249 



erosion and transportation by, 251, 

 863 



fluctuations of, 239 



limits of, 237 



relief of, 243 



shear of, 282 



temperature of, 245 



types of, 231 



work of, 251, 863 

 Glacio-fluvial deposits, 250 

 Glauconite, 77, 326, 327 



origin of, 742 

 Globigerina bulloides, 795 



ooze, 37, 329 

 Glossopteris, 691 



angustifolia, 671 



communis, 671 



flora, 667, 670 

 Glycerites sulcatus, 533 

 Glycimeris idoneus, 796 

 Glyptocrinus decadactylus, 530 

 Glyptodon, 920 

 Gneiss, 29, 56, 84 

 Gogebic iron ore, 459 

 Golden Gate series, 708 



Goldthwaite, J. W., 837, 882 

 Goniatites, 580, 586, 607, 657 

 Goniatites kentuckiensis, 614 



vahuxemi, 585 

 Goniobosis (?) ortmanni, 739 

 Goniophyllum, 552 



pyramidale, 552 

 Gooch, F. A., 213 

 Gorge, 138 

 Goshen schist, 627 

 Graben, 355 

 Gradation, 2 



cause of submergence, 479 

 Gradational eon of earth, 435 

 Grade, 125, 128 

 Graded plain, 128 

 Grammatodon inornatus, 715 

 Grammysia hannibalensis, 608 

 Grand Canyon of the Colorado, 135, 



136 

 Grand Canyon district, 153 



group, 472 



Grand Gulf formation, 797 

 Granite, 21, 28, 60, 84 

 Granitoid, 61 



Granules of ice, growth of, 277 

 Granulite, 84 

 Graphic granite, 29, 84 

 Graphite, 53, 77 

 Graptolites, Cambrian, 499 



Ordovician, 522, 531, 532 



range of, 523 



Silurian, 553 

 Grasses, 761, 818 

 Gravel, 34 

 Gravity, a cause of crust movement, 



360 

 Great Basin Devonian fauna, 588 



Mississippian fauna, 611 

 Great Salt Lake, 336 

 Green Bay glacial lobe, 858 

 Greenbrier limestone, 598 

 Greenland glaciation, 849 

 Green muds, 327 

 Green Pond Mountain conglomerate, 



543 



Greensand, 84, 757, 768 

 Greensand marl, 744 

 Greenstone, 30, 84 

 Gregory, H. E., 683 

 Greywacke, 84 

 Ground moraines, 266, 865 

 Ground-water, 110, 195 



amount of, 201 



descent of, 197 



