Abstract
In the region of the Kodachrome Basin State Park, Utah, are found some unusual vertically oriented, intrusive sedimentary structures. They are called pipes if cylindrical in shape (see Figure 1 and cover photo), or dikes if flat-like in shape. These structures, which sometimes reach heights well over 50 m (150'), have come from the sedimentary layers below. In the same area, there is also indication of collapse of some sediments into lower layers (Christiansen 1952).

FIGURE 1. One of the largest exposed "pipes" in Kodachrome Basin. The surrounding rock, which is softer, has been eroded away, leaving this 50 m (150') "monolith." The surface of the pipe is badly eroded.