The Coronado Sandstone is a geologic formation that is exposed in eastern Arizona and western New Mexico.
[1] The formation consists of dark-weathering sandstone, whose grains are usually cemented by quartz but in some locations by carbonate minerals.
It is overlain by the El Paso Formation and rests on Precambrian basement rock.
To the east, it onlaps onto the underlying basement and its upper beds grade into the Bliss Formation.
[1] The formation is low in porosity, giving it poor potential as a petroleum reservoir.