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Text File  |  1995-10-02  |  505b  |  8 lines
  1. CANYON PATTERNS
  2. Eras:           Older Precambrian, Younger                                                         Precambrian, Paleozoic
  3. Periods:      Cambrian, Mississippian,                                                             Pennsylvanian,                                Permian
  4. Formations: Vishnu, Bass, Hakatai, 
  5.                     Shinumo, Tapeats, 
  6.                     Bright Angel, Muav, Redwall,
  7.                     Supai, Hermit, Coconino,
  8.                     Toroweap, Kaibab