Banded Gneiss in Sabino Canyon

Black and white banded gneiss, a metamorphic rock with alternating light and dark bands or layers of different mineral composition, is common in Tucson's Sabino Canyon, which is where this small waterfall over banded gneiss can be found.

Banded Gneiss in Sabino Canyon, Tucson, Arizona

Metamorphic rock, such as granite, marble, or this gneiss is rock that has been transformed through heat and pressure into a new and different type of rock.