COMMON LOESS 



155 



the hills as a sheet of relatively uniform thickness, having but little influ- 

 ence on the character of the topography. It is essentially non-calcareous, 

 rarely effervescing, and commonly shows on analysis less than 1 per cent 

 of calcium carbonate, though some of the more calcareous portions rise 

 considerablv above the amount mentioned. 



Miles 



Figure 1. — Sketch Map of southwestern Indiana. 



Showing location of the Mount Carmel, Princeton, Petersburg, New Harmony, Haubstadt, and 



Boonville quadrangles. 



Calcareous concretions are relatively rare, and when found are gen- 

 erally of small size. On the other hand, small iron concretions, both of 

 the tubular and rounded or irregular types, are abundant in places. 



