Answering intriguing questions such as Why does the largest river system in North America meander across the middle of the continent? and How does such a system

Great Plains Geology concisely guides readers through the geological development of the Great Plains region. It describes the distinct features of fifty-seven g

A study of 170 kinds of plants and the strata that yield them, showing how they apply in the delimination of the Paleocene series.

CD-ROM contains: Introductory text, maps, and geologically labeled photographs of all the parks.