For the main part of this lab we will use a nice map from the United States Geologic Survey (USGS):
Physiographic Regions of the United States - Geology
This map has the conterminous United States divided into regions based on "lay of the land," or physiography. The physiographic regions are based on landscape features, which are mostly controlled by the geology of the regions. The map below shows the same regions on a shaded relief map:
Physiographic Regions of the United States - Shaded Relief
For a listing of basic information about the regions study this table . Here are the 25 regions posted on the map:
1. Superior Upland (This is the edge of the huge Canadian Shield).
2. Continental Shelf (around the margin of the Gulf of Mexico and the Atlantic margin)
"12. Central Lowlands": This broad area includes broad areas affected by Pleistocene glaciation, such as the driftless area , and there are many uplifts and sedimentary basins, such as the Michigan Basin
14. Ozark Plateaus
16 - 19. Rocky Mountains
20. Columbia Plateau
21. Colorado Plateau
Physiographic Map of Alaska
Geologic Map of Alaska (Use the legend below for identifying geologic age of areas).
For another colored geologic map of Alaska, look here.
Geology of the Conterminous United States at 1:2,500,000 Scale - A Digital Representation of the 1974 P.B. King and H.M. Beikman Map: publication page
Wikipedia also has a page with links to areas on the map used here.
Thelin, G.P., and Pike, R.J., 1991, Landforms of the conterminous United States; A digital shaded-relief portrayal: U.S. Geological Survey Miscellaneous Investigations Map I-2206 scale 1:3,500,000. , and the actual full-size (11.8 megabytes) tiff file .