Geological Nonconformity (1400 Ma
Outcrop of a 1.4 billion years gap in the geologic record where the 300-million-year old Fountain Formation nonconformably overlies Precambrium Gneiss (1700 Ma).
Outcrop of a 1.4 billion years gap in the geologic record where the 300-million-year old Fountain Formation nonconformably overlies Precambrium Gneiss (1700 Ma).