Details Relating to Gilbert’s Proposal
26. 
Layering,
Limestone,
Why Here? 
Why So “Recently”?
Marble Canyon,
Distant Cavern Connection,
Perpendicular Faults,
Arching,
Inner Gorge,
Missing Talus,
Colorado Plateau,
Unusual Erosion,
Nankoweap Canyon. Same as item 18.
27.
Side Canyons,
Barbed Canyons,
Slot Canyons. Same as item 19.
28.
Forces, Energy, and Mechanisms. Same as item 20.
29.
Missing River,
Missing Dirt. Same as item 21.
30.
Kaibab Plateau. No fault has been found that cuts through the Kaibab Plateau along the Colorado River. Faults in that region tend to run north-to-south, usually perpendicular to the river.
Rivers or streams frequently follow faults, but faults are approximately straight lines. The Colorado River curves frequently in its path through the Grand Canyon, so very little of its path is controlled by faults.
31.
Missing Mesozoic Rock. Same as item 22.
32.
Fossils. Same as item 23.
33.
Tipped Layers below the Great Unconformity. Same as item 24.
34.
Time or Intensity? Same as item 25.