slgwv's photos with the keyword: crossbeds

Large-scale crossbedding in the Navajo Sandstone (Jurassic), near Coral Dunes State Park, Utah, just off the trail to the Indian Canyon Pictographs. These are inferred to be cross-sections of ancient sand dunes.

Criss-crossing joints and crossbeds! A much-photographed outcrop in Zion National Park, Utah, USA. As usual map position is approximate.

This style of crossbedding is traditionally interpreted as reflecting stream deposition, and hence a continental (rather than marine) environment.

The de Chelly (de shay) sandstone is a unit with large-scale crossbedding, inferred to be of dune origin, like the Navajo Sandstone of Zion and Glen Canyon. It's considerably older, though, being Permian, some 150 million years or so before the late Jurassic. It forms both Canyon de Chelly and the buttes in Monument Valley. It's correlative with the Coconino Sandstone of the Grand Canyon. On the trail to White House ruin.