English: Original caption: View southwest across Weiser Valley.
a, Kaibab limestone on west side of Weiser Ridge; b, gypsiferous shale at top of Supai formation; c, sandstone in Supai formation; d, Moenkopi formation; e, Chinle formation and Shinarump conglomerate; f, Moenkopi formation; g, Kaibab limestone. All beds dip west in overturned position. Weiser Valley fault between c and d.
Text from the volume referring to the plate:
Overturned fold in Weiser Ridge will be referred to as the Weiser anticline, and its broken continuation to the south as the Weiser thrust. The later normal fault, displacing the western limb of the anticline, will be called the Weiser Valley fault. West of this fault the formations have a synclinal structure, the Kaibab limestone turning up sharply in California Ridge, a close duplicate of Weiser Ridge. On its western flank the full thickness of the Supai formation lies in an inverted position, and a low, discontinuous ridge is made by upturned beds of Callville limestone. At several points these Pennsylvanian strata have been turned through an angle of 160° and now dip at a low angle away from the younger formations. This extreme overturning, which was accompanied by considerable crumpling, suggests that these beds were overridden by a thrust. The alternate assumption is an essentially recumbent anticline, the upper part of which has been removed by erosion. Whether the structure is that of a thrust or a fold, probably its continuation to the west has been concealed by displacement on a north-south fault paralleling the west border of the range. As no part of such a fault was seen, it is not represented on the geologic map.