Sea-level changes
After the formation of the Pikes Peak Granite, erosion continued throughout the early stages of the Cambrian time period. With this, seas transgressed from both the west and southeast direction, which eventually meet up, forming the Sawatch Sandstone. As the Cambrian period continued, sea level increased causing a shallow sea to intrude the area, where beach sands and other small sediments were deposited along the rising shore. The Lower Sawatch formation is inner bedded, has medium to fine grained beach-deposited sandstones with smaller layers of coarse-grained conglomerates, which suggest that this was formed in a low energy depositional environment, most likely
