Sandstone Blistering

July 24, 2004

P10109742 copy

Provided by: P. Riemer
Summary authors & editors: Jim Foster; P. Riemer

This interesting photo of sandstone "blistering" was taken near Moab, Utah in April of this year. A number of similar patterns were observed on sandstone surfaces in this area. The shapes were frequently circular, but some denser forms are ram-head shaped. While it's not know for sure just what may have caused this deformation or blistering, it's possible that lichens weakened the rock, and physical weathering eroded it out.

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