DAETON.] 



NORTH AMEEICAN GEOLOGY. 



411 



Geologic Philosophy— Continued. 

 Dynamic Geology— Continued. 



1885. Separation of strata in folding, 



Bulkley, F. G. 



Elevation and depression of 

 the earth's surface, Locking- 

 ton. 



Displacement through intru- 

 sion, Dana, J. D. 



Impact friction and faulting, 

 Becker. 



MountTaylor and Zuniplateau, 

 Dutton. 



Crumpling of the earth's crust, 

 Taylor, W. B. 



British earthquakes and their 

 Seismic relations, Owen, E. 



Columnar structure in clay, 

 Salisbury. 



Geology ofHuntingdonCounty, 

 Pa., "White, I. C; Lesley, 

 J. P. 



Lateral movements of the 

 earth's crust. King, F. H. 



1886. Lagging subsidence vs. eleva- 



tion, Eichardson, J. 

 Cause of earthquakes, Powell, 



J.W. 

 Structure of Triassic formation, 



Davis, W. M. 

 Post-Tertiary elevation of 



Sierra Nevada, Le Conte. 

 Earthquakes, Newberry. 

 Origin of mountain ranges, 



Eeade, T. M. 

 Cause of shrinkage in the 



earth's crust, Taylor, W. B. 

 Sources of trend and crustal 



surplusage in mountain 



structures, Winchell, A. 

 Continents and ocean basins, 



Le Conte. 



1887-1889. Structure of Trias of 

 Connecticut Valley, Davis, 

 W.M. 



Structure in Denver region, 

 Colo., Eldridge. 



Crenitic hypothesis and moun- 

 tain building, Shaler. 



Problems of physical geology, 

 Dutton. 



Mountain upthrusts. White, 

 C.A. 



Geologic Philosophy^Continued. 



Dynamic Geology — Continued. 

 1887-1889. Origin of normal faults, Le 

 Conte. 



Appalachian flexures in Penn- 

 sylvania, Margarie. 



Genesis of Hawaiian Islands, 

 Hitchcock, C.H. 



Origin of oceanic depressions, 

 Dana, J. D. 



Earthquakes, Newberry. 



Origin of fissure veins [and 

 faults], Emmons, S. F. 



Is a faulted fissure always the 

 oldest? Heinrich. 



Great Basin structure, Eus- 

 sell, I. C. 



Eifect of pressure of a conti- 

 nental glacier, Winchell, A. 



Nova Scotia gold veins, Gilpin. 



Origin of mountain ranges, 

 Dana, J. D. ; Davis, W. M. 



Faults of southwestern Vir- 

 ginia, Stevenson. 



Evolution of continents, 

 Dwight, Warring. 



Faults and flextures in Penn- 

 sylvania anthracites, Was- 

 muth. 



Condition of the interior of 

 the earth, Claypole. 



Joint structure, Crosby. 



Eeport of California division of 

 geology, Becker. 



Cruises of the.BZofceAgassiz,A. 



Age of Triassic monocline in 

 the Connecticut Valley, 

 Davis, W. M. 



Theories of the earth, Eeade, 

 T.M. 

 1890. Deformation of the geoid by 

 removal of Lake Bonneville, 

 Woodward, E. S. 

 Proof of the earth's rigidity, 

 Becker. 



Strength of the earth's crust, 

 Gilbert, Winchell, A. 



Level of no strain in the earth's 

 crust, Claypole, Davis. 



Shear in earth-crust move- 

 ments, Stevenson. 



Origin of diagonal trends in 

 the earth's crust, Martin, 

 D. S. 



