404 C. R. Stauffer — The Minnesota Devonian. 



cussed. There is at least a marked change in sedimenta- 

 tion between the light gray to white limestone near LeRoy 

 and the impure "cement beds" characteristic of the 

 Austin region. The best outcrop in this latter region is 

 along Rose Creek, about three miles south of Austin, 

 where quarrying has been carried on for many years. 

 Formerly this rock was used as a building stone but it 

 weathered badly hence it has long been abandoned as a 

 construction rock. It is now used only in the manu- 

 facture of a natural cement. 



Section of the Fowler and Pay Cement Quarry along 

 Rose Creek, Three Miles South of Austin. 



Pleistocene and Recent. Thickness 



4. Soil and drift, the latter chiefly- gravels 2' 0" 



Cretaceous ? 



3. Clay, blue and red, in pockets over the uneven sur- 



face of the limestone 5' 0" 



Devonian (Cedar Valley limestone) 

 2. Limestone, blue to gray, weathering to buff, and 

 containing a few fossils — 

 Athyris fultonensis (Swallow) (r) 

 Spirifer iowaensis Owen? (r) 

 Fish plates and scales (r) 



10' 0" 



1. Limestone, gray to buff, rather massive, containing 

 some chert and with pebble-like masses of 

 limestone occurring in some of the lower lay- 

 ers. These beds extend to the level of Rose 

 creek 15' 0" 



The beds which appear to be the highest of the Devon- 

 ian limestone section in Minnesota, outcrop along Cedar 

 River in the southwestern part of Mower County. 



Section along Cedar River, Three Miles West of Lyle, 

 Mower County. 



Recent. Thickness 



4. Soil 5' 0" 



