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The Delaware Geological Survey

Geologic and hydrologic research and exploration for Delaware

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Piedmont Rock Unit Descriptions

  • Ardentown Granitic Suite
  • Baltimore Gneiss
  • Barley Mill Gneiss
  • Biotite Tonalite
  • Brandywine Blue Gneiss
  • Bringhurst Gabbro
  • Christianstead Gneiss
  • Cockeysville Marble
  • Faulkland Gneiss
  • Iron Hill Gabbro
  • Metapyroxenite and metagabbro (undifferentiated)
  • Mill Creek Metagabbro
  • Montchanin Metagabbro
  • Pegmatite
  • Perkins Run Gabbronorite Suite
  • Rockford Park Gneiss
  • Serpentinite
  • Setters Formation
  • Windy Hills Gneiss
  • Wissahickon Formation

Book traversal links for Piedmont Rock Unit Descriptions

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The Geology of Delaware

  • Introduction
  • Piedmont Geology
    • Overview of the Piedmont
    • Geologic History of the Delaware Piedmont
    • Common Rocks and Minerals of the Delaware Piedmont
    • Deformation in the Piedmont
    • Piedmont Rock Units
    • Piedmont Rock Unit Descriptions
      • Ardentown Granitic Suite
      • Baltimore Gneiss
      • Barley Mill Gneiss
      • Biotite Tonalite
      • Brandywine Blue Gneiss
      • Bringhurst Gabbro
      • Christianstead Gneiss
      • Cockeysville Marble
      • Faulkland Gneiss
      • Iron Hill Gabbro
      • Metapyroxenite and metagabbro (undifferentiated)
      • Mill Creek Metagabbro
      • Montchanin Metagabbro
      • Pegmatite
      • Perkins Run Gabbronorite Suite
      • Rockford Park Gneiss
      • Serpentinite
      • Setters Formation
      • Windy Hills Gneiss
      • Wissahickon Formation
    • Selected Outcrops of the Delaware Piedmont
    • Piedmont Field Trips - GeoAdventures
  • Coastal Plain Geology
  • Hydrogeology
  • Mineral Resources
  • Natural Hazards
  • Fossils

DGS Research

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DGS Annual Report

DGS Annual ReportDGS Annual Report of Programs and Activities.

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© 2020 Delaware Geological Survey, University of Delaware, Newark, DE 19716-7501

Phone: 302-831-2833 | Fax: 302-831-3579 | Email: delgeosurvey@udel.edu

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