TONY CRADDOCK / SCIENCE PHOTO LIBRARY TONY CRADDOCK / SCIENCE PHOTO LIBRARY
Banded sedimentary cliff. View of sedimentary rock cliff, showing very distinct strata. The rock is different colours according to its composition; most of the red and yellow rock is sandstone with differing amounts of mineral inclusions. The layered effect results from the different erosion rates in different strata; layers of softer rock erode more quickly. Photographed at Zion National Park, Utah, USA.
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