Keywords:Arizona, Colorado River, Cross Beds, Esplande Sandstone, Grand Canyon National Park, Marble Canyon, Paleozic rocks, Patterns, Supai Group, fractures, layering, rock formation, sedimentary, strata
GC12_30105
Patterns, Cross Beds, layering, fractures, Esplande Sandstone, Rock Formation, strata, Supai Group, Marble Canyon, Colorado River, Grand Canyon National Park, Arizona
