How can we visualize the sequence and order of rock layers that are in the Florissant Fossil Beds area? Objective Students will learn about the specific rock layers described in the stratigraphic column for Florissant Fossil Beds, such as the Florissant Formation which contains various types of fossils. This is done by using food ingredients for enchiladas that represent each of these rock layers. Background Geology studies the earth's physical structure, history, and processes. Stratigraphy is a branch of geology that studies the order and position of strata or rock layers and their relations Duration: 30 Minutes.