Many sedimentary rocks exposed in the Denver region are tilted at a high angle to the horizontal, indicating that there have been significant tectonic forces or geological processes that have caused the rocks to be deformed and tilted from their original horizontal orientation. This suggests that there have been episodes of folding, faulting, or uplift in the region, resulting in the tilting of the sedimentary layers. The tilting could be a result of tectonic activity such as mountain building, volcanic activity, or crustal deformation over geologic time.