View to the
west-northwest with Travertine Canyon in the left
foreground. 231 Mile Canyon is a little further back to
the right, and river mile 232 is reached after the river
has completed most of its slight turn to the left.
The inner gorge here is a result of the river
cutting down through the Tapeats Sandstone and into the
underlying Precambrian schist. While the sides of the
inner canyon are not quite as precipitous as the inner
gorge in the Kaibab Plateau, the sharp V shape and
relative lack of intra-canyon remnants of the lava flows
suggests there is canyon cutting currently in progress in
this area, but not to the degree seen on the west side of
the Kaibab Plateau.
The Bright Angle Shale is above the Tapeats
and forms its usual slope. Then the cliff is formed by
assorted limestone layers with the sheer cliff of the
Redwall at the top.
The lowest member of the Supai Group then
forms the broad slope above the Redwall, and the Esplanade
Sandstone caps this with a flat layer. The slope-forming
Hermit Shale is next. Finally, the Kaibab/Toroweap cliffs
show up at the right edge which completes the journey to
the top of the Shivwits Plateau. (The Coconino Sandstone
is not present in this area as it thins and disappears to
the west of the Hurricane Fault.)
to river miles 216 to 224
Continue to river miles 232 to 240
the Index Page for the Grand Canyon Tour
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