What kinds of stone is the Rockies made of?

The Rocky Mountains are primarily composed of a variety of sedimentary, metamorphic, and igneous rocks. The lower elevations often feature sedimentary rocks like sandstone and limestone, while the higher peaks include metamorphic rocks such as schist and gneiss, as well as igneous rocks like granite. The geological diversity is a result of complex processes including tectonic activity, erosion, and volcanic activity over millions of years.