Description: 1. Stanley S. Beus and Michael Morales: Introducing the Grand Canyon2. R.S. Babcock: Precambrian Crystalline Core3. J.D. Hendricks and G.M. Stevenson: Grand Canyon Supergroup: Unkar Group4. Trevor David Ford: Grand Canyon Supergroup: Nankoweap Formation, Chuar Group, and Sixtymile Formation5. Geologic Structure of the Grand Canyon Supergroup, James W. Sears6. Larry T. Middleton and David K. Elliott: Tonto Group7. Stanley S. Beus: Temple Butte Formation8. Stanley S. Beus: Redwall Limestone and Surprise Canyon Formation9. Ronald C. Blakey: Supai Group and Hermit Formation10. Larry T. Middleton, David K. Elliott, and Michael Morales: Coconino Sandstone11. Christine E. Turner: Toroweap Formation12. Ralph Lee Hopkins: Kaibab Formation13. Michael Morales: Mesozoic and Cenozoic Strata of the Colorado Plateau Near the Grand Canyon14. Peter W. Huntoon: Phanerozoic Structural Geology of the Grand Canyon15. Ivo Lucchitta: History of the Grand Canyon and of the Colorado River in Arizona16. Susan Werner Keiffer: Hydraulics and Geomorphology of the Colorado River in the Grand Canyon17. W.K. Hamblin: Late Cenozoic Lava Dams in the Western Grand Canyon18. David S. Brumbaugh: Earthquakes and Seismicity of the Grand Canyon Region19. Richard Hereford and Peter W. Huntoon: Rock Movement and Mass Wastage in the Grand Canyon20. Andre R. Potochnik and Stephen J. Reynolds: Side Canyons of the Colorado River, Grand Canyon

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