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Incoming Resources
- Volcanic ash, tuff, etc -- Virginia, Southwest
- Natural gas reserves -- Virginia, Southwest
- Geology -- Virginia, Southwest
- Groundwater flow -- Virginia, Southwest
- Excavations (Archaeology) -- Virginia, Southwest
- Rocks, Sedimentary -- Virginia, Southwest
- Stratigraphic correlation -- Virginia, Southwest
- Coal + Geology -- Virginia, Southwest
- Geology -- Virginia, Southwest -- Nomenclature
- Indians of North America -- Virginia, Southwest -- Antiquities
- Formations (Geology) -- Virginia, Southwest