Indeed the Morrison Formation [1] covers much of the state. Dinosaur ridge is one edge of it, just a stone's throw away from Denver. [1] https://en.wikipedia.

Indeed the Morrison Formation [1] covers much of the state. Dinosaur ridge is one edge of it, just a stone's throw away from Denver. [1] https://en.wikipedia.org/wiki/Morrison_Formation https://en.wikipedia.org/wiki/Morrison_Formation