Figure 15.--Photographs of large-scale crossbedding, interpreted as deltaic foresets, in the Minturn Formation. Differences in mechanisms that produce large-scale concave and planar foresets needs further investigation.

[Photograph of large crossbedding, Rito Alto Peak]

A) Concave-up foresets on east side of Rito Alto Peak.

[Photograph of large crossbedding, Phantom Terrace]

B) Planar foresets (labeled "large-scale crossbedding") on east side of Phantom Terrace, about 3 km south of Hermit Peak.