ILLUSTRATIONS XI 



Page 



Plate 10-=— Fairchild : Pleistocene uplift of New York State 235 



" 11 " Pleistocene deformation of the Ontario basin 244 



" 12 " Isobases of Pleistocene uplift 253 



" 13— Goldthwait : Ammonoosuc Valley and neighboring slopes of 



the White Mountains 263 



" 14 — Leonard: Old Pleistocene valleys in western North Dakota 299 



" 15 — Savage : May ville limestone 323 



" 16 " Fossils from the Alexandrian rocks 324 



" 17 " Fossils from the Alexandrian rocks. 325 



" 18 — Prouty : Location map of crystalline marbles of Alabama 437 



" 19 — Schuchert : Illustrations of disconformities 497 



" 20 " Salina and Shawangunk at Otisville, New York. . . 544 



" 21 " Shawangunk quartzites overlying Hudson River 



shales 545 



. " 22 — Alling : Glacial delta-terrace and beaches of the central Adi- 



rondacks 658 



" 23 " Copperas Pond, New York 660 



" 24 " Glacial waters in the central Adirondacks 672 



" 25 — Martin : Distribution of Alaska Triassic faunas 688 



" 26 " Upper Triassic rocks, Nizina Valley, Alaska 690 



" 27 " Upper Triassic rocks, Kotsina Valley, Alaska 694 



" 28 " Upper Triassic rocks, Cooks Inlet and Nizina Valley, 



Alaska 699 



" 29 " Triassic fossils from Alaska ■ 70S 



" 30 " Triassic fossils from Alaska and California 712 



Figures 

 Reeds : 



Figure 1 — Stages in the geologic history of Porto Rico S4 



Lane : 



Figure 1 — "Ideal sketch of the primitive Keweenaw fault" 94 



" 2 — Ideal sketch of the same fault as figure 1, supposing it 



to be a block-fault 95 



" 3 — "Ideal sketch of the Keweenaw fault, after the deposi- 

 tion of the eastern sandstone and before the second- 

 ary faulting" 95 



" 4 — A stage corresponding to figure 3 96 



" 5 — "Ideal sketch of the Keweenaw fault, after the second- 

 ary faulting" 9S 



" 6 — Ideal sketch of the Keweenaw fault just before the sec- 

 ondary thrust faulting 98 



" 7 — Ideal sketch of the Keweenaw fault just after the sec- 

 ondary thrust 98 



" S — Ideal sketch of a cross-section through the southern 

 part of the Keweenaw (copper) Range (ck) , Lime- 

 stone Mountain (./'), Silver Mountain (i) to the Huron 



Mountains 100 



Watson and Cline: 



Figure 1 — Outline map of Virginia 195 



