173 



Result^ OF Gi.act\t!On in Indiana. 



Bv Charlks W. Shannon. 



l.tiriir- the pa.t live or six years my tteld work has been in both the 

 ...nciated and unglaciated parts of Indiana. Tlie work has been chiefly 

 eoncerning the surface features, such as drainage, soils, clays, gravel and 

 sand deposits, and stone outcrops. A study of these surface features has 

 revealed many contrasts between the two areas. Some of these are very 

 luarked, others are not so prominent at first consideration. It is the 

 purpose of this paper to show some of these results of glaciation withu. 



tlie State. . , . , , ^ 



For the general information concerning the ice sheets which have 

 invaded the State, and their influence upon drainage and other physical 

 IVanires. I have drawn upon the works of I'rof. T. C. Chamberlin, Mr 

 Frank Leverett, Dr. Charles K. Dryer, and others who have made special 

 studies and investigations in glaciation within the State. 



The work of the glaciers in Indiana has been attracting the attention 

 of geologists and other investigators for a number of years. Both the 

 State and the United States Surveys, as well as individuals, have done a 

 great amount of work and are at present engaged in the investigation A 

 ;.aveful study of the glacial deposits in Indiana will throw much hgh 

 npon the conditions present in adjoining States, and on the resxilts of 

 jaciation in general. According to Mr. Deverett, the gh.ial deposi^ and 

 .eorings of the State have been recognized from the earliest days of set- 

 tlement' "It is in Indiana that we find about the first recognition m 

 Vmerica of the boulders as erratics and of stri. as products of ice action^ 

 SO long ago as 1S28, granite and other rocks of distant derivation were 

 obseJd by geologists near New Harmony, in the -"^J/^^^/J 



,1,- n fi-TtA (^^4'^) striEe were noted near Kicn 

 the State; at nearly as earlj a date (iNi-). ^i^'-*^ 



, , ^f tbp ^t^te " But even with these observa- 



mond. in the eastern part of the State. ±iur 



tions, very little attention was given to the deposits until within the past 

 twenty-five or thirty years. 



About four-flfths o< tl,e State lie, in tU. giaoiated area In •« soutb 

 central part of the State Is a ciriftless area comprises all o, a part 

 twenty counties. 



