View to the west-northwest
with Deer Creek (and Deer Creek Falls) joining the Colorado River in
the right foreground. In the middle distance, 140 Mile Canyon joins
from the left and Fishtail Canyon enters from right. Kanab Creek enters
from the right along the extreme upper edge.
A popular hike for rafting groups is to climb up from the
river at the base of Deer Creek Falls to at least reach the open valley
above the falls (small green area near the lower edge). As the trail
zigzags up out of the schist and Tapeats Sandstone that forms the cliff
next to the river, a spectacular view unfolds. ("Throat clutching view"
might be equally descriptive.) If you continue to follow the creek up
to Deer Spring (extreme lower edge of the picture), you get to see
another large waterfall where the stream bursts out of a cave system in
the limestone cliffs.
The trail up from the river uses a slope that is the
result of a large slump (very slow motion landslide). Water is able to
seep down through the broken material of the slump while the underlying
solid rock keeps the water near the surface. As a result vegetation
(including one of the few locations that Poison Ivy exists in the
canyon) is able to grow in areas several hundred feet away from the
river.
View to the west with 140
Mile Canyon along the lower left edge and Fishtail Canyon to the right.
Kanab Creek enters from the upper right edge while Fishtail Mesa is
between Kanab and Fishtail Canyons. As we go downstream from here, the
Kaibab/Toroweap/Coconino cliff that marks the outer rim of the canyon
gets further away from the river while the flat Esplanade surface
becomes more predominate.
The inner canyon becomes precipitous for the next 25 river
miles as the strata containing the slope-forming Bright Angel Shale
dips below river level. This brings the Redwall/Muav Limestone layers
down to river level, and this combination produces a massive cliff.
Another factor contributing to the steep inner gorge is the river's
canyon-cutting that has propagated upstream from the Toroweap Fault.
The Sinyala Fault extends diagonally up and left from the
center of the lower edge. Past movement along the fault has fractured
the rocks making it easier for erosion to start digging side canyons.
Return to river
miles 128 to 136
Continue to river
miles 144 to 152
Return to the
Index Page for the Grand Canyon Tour
Web page generated via
KompoZer