Studies in Minor Folds 



By CHARLES E. DECKER 



The author's purpose is to illustrate by diagrams 

 and photographs a series of types of minor folds; 

 to illustrate and study briefly a few minor folds in 

 their relation to major ones; to illustrate a larger 

 number of small folds in the midst of horizontal 

 or gently dipping strata, showing their character- 

 istics, methods of origin, age, and relation to 

 faults; and finally, to connect these minor 

 deformations, in so far as possible, with larger 

 movements, and show their significance, as 

 indicating the presence of compressional stresses 

 in the rocks in the interim between the great 

 periods of deformation and mountain-building. 



The data on which these studies are based have 

 been secured from a narrow area south of Lake 

 Erie, extending from Cleveland across north- 

 eastern Ohio, northwestern Pennsylvania, and 

 into New York as far as Dunkirk. A few folds 

 on Lake Ontario were studied, both in northern 

 New York and southern Canada. A few folds 

 were studied in the folded areas of the Arbuckle 

 and the Wichita Mountains of Oklahoma. 



Cloth; $1.50, postpaid $1.60 

 The University of Chicago Press 



Chicago - - - Illinois 



The Geology of 

 Vancouver and Vidnity 



By 



EDWARD M. J. BURWASH 



14 Jtalf-tones, lo line drawings, and 2 colored maps 



A thorough and authoritative survey of the 

 region, made more interesting by the re- 

 markable photographs, which include a profile 

 of the Grouse Mountain spur, the Lions from 

 Mount Brunswick, a view of Red Mountain 

 from Black Tusk Mountain, Mount Garibaldi 

 from the south, a glacial section from a 

 cutting on Keith Road, and others equally 

 interesting. One colored map shows the 

 topography of Vancouver range and the other 

 is a geological map of Vancouver and vicinity. 



Paper covers; $1.50, postpaid $1.60 



The University of Chicago Press 



Chicago ... lUinois 



A Naturalist in the Great Lakes Region 



By ELLIOT R. DOWNING 



Associate Professor of Natural Science in the School of 

 Elducation of the University of Chicago 



A new type of illustrated Nature-guide that will help 

 you identify the living things you see on the earth and 

 in the air and water by showing how Nature, following a 

 definite system, has combined plant and animal life into 

 groups or associations. A book for the hiker's knapsack 

 and the nature-study class. 450 illustrations. 



Educational edition, cloth; $2.50, postpaid $2.60 

 De Luxe edition, flexible binding; $3.50, postpaid $3.60 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO ILUNOIS 



