usgs

Delicate Arch

This view is of Delicate Arch with the La Sal Mountains in the distance. Most of the arches and landscape features in the park are in the Jurassic Entrada Sandstone. Note the gentle dip of the strata; in the foreground the layers dip gently to the right. The Jurassic Morrison Formation is exposed in the valley and most of the ridge beyond. Most of the interesting landscape features are associated with the erostion of the gentle structure of the Salt Creek anticline that trends in a northwest direction across the park. The La Sal Mountains in the distance are remnants Tertiary-age volcanic intrusions.

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