Describes: geologic maps and their use as a fundamental data base, a rigorous benefit-cost model for valuing geologic map information, and the economic issues associated with determining whether or not a geologic map is a public good. Maps, charts and tables, some in color. Extensive bibliography.

Geologic maps supply a wealth of information about the surface and shallow subsurface of the earth. The types of materials that are present in a location and the three-dimensional structure of the bedrock both can be gleaned from a clearly prepared geologic map. Geologists, civil and environmental engineers, land-use planners, soil scientists, and geographers commonly use geologic maps as a source of information to facilitate problem solving and identify the qualities of a region. Maps reveal the position of many types of natural hazards, indicate the suitability of the land surface for various uses, reveal problems that may be encountered in excavation, provide clues to the natural processes that shape an area, and help locate important natural resources. Suitable for lab courses in structural geology as well as field geology work, Spencer describes representative examples of features found on geologic maps and outlines procedures for interpretation and projection. Geometric techniques are explained using a step-by-step approach. Coverage of mapping methods includes tools that provide necessary data, such as Google Earth, GPS, GIS, LiDAR maps, drones, and aerial photographs. Challenging and engaging exercises throughout the text involve students in the mapping process and stimulate an appreciation of the extent and precision of information presented in geologic maps. Regional geology is an important component of lab and field mapping projects. As such, the Third Edition includes new maps of the Gulf of Mexico Coastal Plain, Rocky Mountain Front Range, Yellowstone region, Moab, Utah, Shenandoah National Park, and Hawai’i. A new chapter devoted to tectonic maps also broadens students’ exposure. Ed Spencer brings over 45 years of teaching experience to the text along with valuable insight and clarity into the interpretation and preparation of geologic maps.

How were the Appalachian Mountains formed? Are the barrier islands moving? Is there gold in the Carolinas? The answers to these questions and many more appear in this reader-friendly guide to the geology of North Carolina and South Carolina. Exploring the Geology of the Carolinas pairs a brief geological history of the region with 31 field trips to easily accessible, often familiar sites in both states where readers can observe firsthand the evidence of geologic change found in rocks, river basins, mountains, waterfalls, and coastal land formations. Geologist Kevin Stewart and science writer Mary-Russell Roberson begin by explaining techniques geologists use to "read" rocks, the science of plate tectonics, and the formation of the Carolinas. The field trips that follow are arranged geographically by region, from the Blue Ridge to the Piedmont to the Coastal Plain. Richly illustrated and accompanied by a helpful glossary of geologic terms, this field guide is a handy and informative carry-along for hikers, tourists, teachers, and families--anyone interested in the science behind the sights at their favorite Carolina spots. Includes field trips to: Grandfather Mountain, N.C. Linville Falls, N.C. Caesars Head State Park, S.C. Reed Gold Mine, N.C. Pilot Mountain State Park, N.C. Raven Rock State Park, N.C. Sugarloaf Mountain, S.C. Santee State Park, S.C. Jockey's Ridge State Park, N.C. Carolina Beach State Park, N.C. and 21 more sites in the Carolinas! Southern Gateways Guide is a registered trademark of the University of North Carolina Press