NEEDLES OVERLOOK

Let us follow the pavement to Needles Overlook, from which fine morning

views of Canyonlands National Park can be seen to the south and west.

Northwestward (fig. 27) we look 10 miles across the Colorado River

canyon to Junction Butte and Grand View Point. (This view is along the

line of the east half of the cross section in fig. 10.) The feather edge

of the White Rim Sandstone caps the White Rim west of the Colorado

River, but the White Rim is absent on the east side of the canyon and in

the entire Needles district to the southwest, where the important scenic

features are carved from the underlying Cedar Mesa Sandstone Member of

the Cutler Formation, referred to hereinafter simply as the Cedar Mesa

Sandstone. Both these sandstones are missing in the foreground of figure

27—their place being taken by thin beds of red siltstone, mudstone, and

sandstone similar to those that comprise the Organ Rock Tongue shown

between the two sandstones in figure 22. These are additional examples

of facies changes mentioned earlier (p. 34).

[Illustration: JUNCTION BUTTE AND GRAND VIEW POINT, looking

northwest from Needles Overlook. (Fig. 27)]

The Geologic Story of Canyonlands National Park · 第 23 / 44 题