The Tapestry of Time and Terrain is a colorful, detailed poster of the land surface and ages of the underlying bedrock of the lower 48 states of the United States. Geologic time is represented on this 56x40-inch map by use of a color palate for each era and period of the geologic time scale. Many easily identifiable features will add to any geologic and time discussion such as the Appalachian Mountains, Triassic Basins, Mississippi River System, Midwest Plains, Basin and Range and many other features. By J.F. Vigil, R.J. Pike, and D.G. Howell. Scale 1:3,500,000 *NOTE: Quantities are limited. If you wish to order more than 5 of these maps, please call (919) 707-9203.