Earth and Mineral Sciences Library

Penn State (University Park)

The Obelisk (Also known as the Polylith)    

• The Penn State Obelisk
• Virtual Ambassador's Obelisk page
• Obelisk Centennial
• Penn State Obelisk Centennial Celebration Pamphlet
• Daily Collegian Polylith article (1944) 
  
• The Obelisk: Revisited (1991)
  

The Concretion

I-99/Skytop Acid Rock Drainage Problem

• Acid Rock Drainage at Skytop USGS Open-File Report 2005-1148
  
• Geological Report on the Skytop Road Cuts by David Gold and Arnold Golden
  
• Information on I-99 Construction
  
• I-99/ARD Remediation Report
  
• PennDOT I-99 Newsletters
  
• Atlas of Preliminary Geologic Quad. Maps of PA - Julian Qd.
  
• The Environmental Geology of the Pine Grove Mills-Stormstown Area, Central Pennsylvania: With Emphasis on the Bedrock Geology and Ground Water Resources. (See the CAT record to locate this book.)
  
• Ask me About Pyrite - This slide show provides an overview of the environmental challenges posed by pyrite.
  

• Centre County Kepone Superfund site (EPA)
  
• Mirex/Kepone fact sheet (Agency for Toxic Substances and Disease)
  
• CDT editorial (March 26, 1998) on the local Superfund site
  
• Centre County Kepone (EPA Administrative records)
  

• The Geology of Centre County. (See the CAT record to locate this book.)
  
• Centre Regional Planning Commission. The Planning Document. (See the CAT record to locate this book.)
  
• Centre County Comprehensive Plans
  
• Summary Groundwater Resources of Centre County, Pennyslvania. (See the CAT record to locate this book.)
  
• The State Water Plan. (See the CAT record to locate this book.)
  
• Soil Survey of Centre County, Pennsylvania. (See the CAT record to locate this book.)
  

• Bear Meadows and Seven Mountains (Centre County)
  
• Quehanna Site (Clearfield County)
  
• Stone Valley Recreation Area (Huntingdon County)