Montana's geologic history includes a long succession of disturbances that changed the rocks, then changed many of them again.

South Dakota fills the landscape with geologic diversity. Written for the layperson and amply illustrated with photographs, maps, and diagrams.

The rocks and landforms have not changed much since the publication of the first edition in 1980, but our understanding of them has.

The overall story of Wyoming's geology and history based on clues left in the state's rocks.

The definitive publication on the fascinating and beautiful Fairburn Agates of South Dakota.

Information packed book listing 3389 un-numbered Saharan and Antarctic meteorites. Also lists approx. 4000 numbered Saharan and Arabian peninsula in a separate section. Three separate indexes also included listing the 3389 meteorites by classification, geographical and chronological order.

Visit dramatic vistas of erosion that reveal fossil discoveries.

This concise monograph provides a thorough, collector-oriented, review of the mica group, including recently described species.

This concise monograph provides a timely review of the minerals of the epidote group, including recent changes in the nomenclature and in-depth information on all presently known species.

The ultimate illustrated guide for non-scientists.

An exciting journey through the history of life and the part our continent has played in it all.

This popular nontechnical introduction to meteorites, asteroids, comets, and impact craters is now even better!

This book interprets the geology of Wisconsin, visible from its highways and parks.

Steers you over glacial moraines and till plains to some of the state's unparalleled geologic features.

Describes the geologic features visible from the state's highways and leads you to outcrops tucked away in wooded river valleys.