Sylvan Lake State Park Geology

The park is surrounded by Pleistocene deposits (young glacial drift of the Bull Lake and Pinedale glaciations) on the southwest, Pennsylvanian/Permian Maroon Formation (maroon and grayish-red sandstones, conglomerates and mudstones) on the east and the Permian/Triassic State Bridge Formation (orange-red to red-brown siltstones and sandstones) on the north.