Hakatai Shale
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- Pseudoorganicstr231nite.Pdf
- Grand Canyon National Park, Arizona
- Grand Canyon Geology Training Manual Section 4
- Guidebook to the Colorado River Part 1: Lee's Ferry to Phantom Ranch In
- Chapter 3. Stratigraphy of Grand Canyon National Park
- Radioisotopes in the Diabase Sill (Upper Precambrian) at Bass Rapids, Grand Canyon, Arizona: an Application and Test of the Isochron Dating Method
- GEOLOGY of GRAND CANYON NATIONAL PARK, NORTH RIM Annabelle Foos Geology Department, University of Akron
- Precambrian Rocks of Northern Arizona John F
- HOW OLD IS the ' • 'T EARTH? + S
- By JOHN H. MAXSON Distance of Over 200 Miles Across the Colorado Plateau Is One of the Great Sights of the World
- Guidebook to the Colorado River, Part 2: Phantom Ranch in Grand Canyon National Park to Lake Mead, Arizona-Nevada