Conglomerate

In Cutler Formation (Permian), Fisher Towers, Utah. The nice round cobbles and pebbles were weathered out of metamorphic rock in the Uncompahgre uplift immediately to the east (the so-called "Ancestral Rockies"), so now they're second generation erosional debris! The Cutler is about 250 million years old, and those metamorphic rocks were already ancient then. A striking example of "deep time...."