BU LLETI N 



of the 



Buffalo Society of Natural Sciences 



VOLUME XI. No. 1 



The Geology of Erie County. 



By Frederick Houghton, M. S. 



The Geology of Erie County. 



The geology of Erie county has to do with the consolidated 

 rock formations which are exposed in the county and with their 

 overburden of unconsolidated detritus, the result of erosion. 



The Consolidated Rock Formations. 



The consolidated rock formations belong to the Siluric and 

 Devonic systems. The edges of the formations extend 

 approximately northeast and southwest, and the county stretches 

 north and south athwart these. Consequently in it are shown a 

 large number of formations which rise like steps to the southward. 



List of Formations Exposed in Erie County. 



These are arranged from upper to lower, as they would 

 appear in crossing the county from south to north. 



