Analysis of surface depressions, fracture trace features, and aerial photography in conjunction with field surveys can map areas sensitive to groundwater contamination. This study was conducted on the Onondaga formation, an area long suffering contamination events attributed to the application of fertilizer on thinly-soiled karst. The results of the analysis suggest many scales of closed depressions exist in the Onondaga formation. These features result from a history of karst and glacial processes as well as anthropogenic activities. Many fracture traces contained systems of sinkholes. Based on previous research and the results of 41 field surveys the features were classified into six types: solution sinkholes, pattern ground sinkholes, scoured bedrock zones, glacially enhanced sinkholes, glacial depressions, and anthropogenic depression. Aerial photography shows that some features are hydrologically active in the early spring.
|Presenter:||Alexandria Kuhl (Undergraduate Student)|
|Time:||2:50 pm (Session IV)|