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BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



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44 



Miller : 





P'igure 

 Branner : 



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Figure 



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Ulrich : 





Figure 



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HOBBS : Page 



Figure 41 — Details of faulting along front of basalt cliflf shown at a a in 



figure 40 171 



" 42 — Floating block topography of the Orenaug Hills, near Wood- 

 bury, Connecticut 172 



-Map of the Chedrang fault 173 



-Changes of throw measured on the course of a fault near the 

 shore of Russell fjord, Alaska 174 



Sketch map of the southeastern Adirondack region 178 



People of the Sao Francisco Railway 201 



Generalized northeast-southwest section, showing the lime- 

 stones as the surface rocks between Joazeiro and Rio Salitre. 202 



Sketch map of southeastern North America 293 



Illustrations of marginal erosion , 312 



The Chambersburg limestone 324 



Diagram illustrating {A) fluctuation and oscillation of average 

 relief of median areas of North America with respect to 

 sealevel, and (B) relative vertical displacement of the 

 strandline in successive periods with respect to an assumed 

 average sealevel 343 



* 5— Diagrams illustrating gulf and boreal invasions 346 



■' 6 — Diagrams illustrating Pacific and Atlantic invasions 347 



' 7 — Map of North America, showing interlapping late Black 



River and early Trenton invasions from the Arctic, Atlantic, 

 Gulf of Mexico, and Pacific sides 368 



* 8 — Schematic sections of North America from the Arctic Sea to 

 the mouth of the Mississippi River 407 



' 9— Sketch giving an approximate idea of the southern Appa- 

 lachian troughs at close of Telico sandstone sedimentation . 414 



" 10— Section showing east-west oscillation of the Adirondack up- 

 lift and consequent differences in the sedimentary sequence 

 on these two sides 414 



* II — Diagrams showing variations in distribution of sediments be- 

 tween and on the flanks of the domes of the Cincinnati 

 geanticline 417 



' 12 — Diagram showing sections of embayments in southern flank 

 of Ozarkia, containing Canadian, Ordovician, and Silurian 



deposits 421 



'■' 13— Geologic map of north-central part of Florida , . . " 431 



;' 14— Diagram illustrating tilting 432 



.< 15— Diagram illustrating hypothesis of origin and location of 

 normal faults thought to have been caused by relief from 

 stresses which developed through loading of negative areas. 433 

 •* 16— Inland migration of belts of folding in southeastern North 



America 440 



= • 17— Diagrams illustrating overlaps and unconformities 450 



* 18— Diagrams illustrating the stratigraphic relations of the Yell- 

 ville, Everton, and Joachim formations to the Saint Peter 

 sandstone and the northward overlap of the last 480 



« 19— Map of portion of land hemisphere 484 



