Xii BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Correlation of the Jurassic formations of western Cuba; by B. Brown 

 and Marjorie O'Connell ^ 



Devonian of Oklahoma, with special reference to the Oriskany and Camden 

 formations : by Charles Schuchert 665 



Age and development of red beds and terrestrial vertebrates of the Appa- 

 lachian and Kansas-Texas sections ; by J. W. Beede G71 



Strata near Stuart. Iowa : by J. L. Tilton G89 



Front ranges of the Andes between Santa Cruz, Bolivia, and Kmbarcacion, 

 Argentina : by K. F. Mather T03 



Deccan traps and other plateau basalts: by H. S. Washington 7G5 



Some new facts bearing on correlations of Chester formations: by E. O. 

 Ulrich S 05 



Index to volume 33 853 



ILLUSTRATIONS 



Plates 



Plate 1 — Upham : Portrait of G. Frederick Wright 15 



2— Keyes : Portrait of O. H. Saint John 31 



3— Kemp : Portrait of H. P. dishing 44 



" 4 — Stanton : Columnar sections of Dakota and associated forma- 

 tions 257 



" r> " Map showing location of sections and distribution of 



Washita and "Middle Dakota" faunas 258 



Figures 

 Ci.ei.ani) : 



Figures 1, 2, and 3 — Model to show the effect of two faults at right 



angles to each other 61 



Figure 4- -Model which shows slip, dip-slip, net-shift, and drag-dip G2 

 Figures 5, c. and 7 — Model to show the topographic effect of a dip- 

 fault, before and after erosion 63 



Figure 8 — Sedimentary erosion apparatus in use at the University 



of Wisconsin 66 



9 — Model of a part of Valcour Island, Lake Champlain. 



New York 68 



10— Model of a gold mine, Field Museum of Natural History 69 

 11— Model of a coal mine. Field Museum of Natural History 70 

 12— Model of the Mount Greylock (Massachusetts) syncli- 



norium 71 



13— Model of a Mexican oil field 72 



14 — Another view of the model shown in figure 13, top re- 

 moved 73 



15 example of a relatively inexpensive exhibition useful 



in teaching 74 



Davis : 



Figure 1— An overthrust. O, leaving a cavity, G, behind it 93 



2 An overthrust, O. emerging from beneath the crust, AB, 



which is displaced and extended by "underdrag" 93 



