Coronado Sandstone
The Coronado Sandstone is a geologic formation that is exposed in eastern Arizona and western New Mexico. It is Cambrian in age based on its position in the stratigraphic column.
Description
The formation consists of dark-weathering sandstone, whose grains are usually cemented by quartz but in some locations by carbonate minerals. The lower beds are arkosic.The formation is low in porosity, giving it poor potential as a petroleum reservoir.