Simulation. "Why simulate?" we might ask. Dan Tetzlaff and John Harbaugh answer that question in Simulating Clastic Sedimentation, and answer it effec- tively. Readers will have no trouble following this well-documented, clear ex- pose on clastic-sedimentation simulation. The sophistication in simulation since 1970, compared to the early work, is enormous. The development and availability of hardware, especially graphics, has made such advancement pos- sible. The authors' presentation allows us to share in this exciting new approach to geological problem solving. The book contains a glossary,...