Canyons of the Colorado

by John Wesley Powell

I. Inner Gorge

TT. Twin Temples. W.C. West Cloister.

KEY TO THE PANORAMA FROM POINT SUBLIME.--LOOKING SOUTH.

1. Cherry limestone, 240 feet.

3. Upper Aubrey limestone, 320 feet

3. Cross-bedded sandstone, 380 feet

4. Lower Aubrey sandstones, 950 feet. 5. Upper Red Wall sandstones, 400 feet. 6. Red Wall limestones, 1.500 fett.

7. Lower Carboniferous sandstones, 550 fret.

8. Quartzite base of Carboniferous, 180 feet.

9. Archaean.