How cunningly nature hides every wrinkle of her inconceivable
antiquity under roses and violets and morning dew!
- Ralph Waldo Emerson
Kaskaskia Sequence
Oriskany, overlaid byOrogenies
Devonian Black shales
oil shales as an energy resource
Acadian Orogeny
Ouachita Orogeny
Antler Orogeny
Useful links:
Earth Science Picture of the Day
Return to Historical Geology syllabus