Learning Objectives have been added to each chapter to help students focus the study of material and to understand the kinds of questions they should be able to answer once they have mastered the content.
A major revision to the problems at the end of chapters. The new and revised questions reflect the learning objectives and follow the flow of the chapter more clearly.
New boxes, sections, and photos detailing recent geologic events such as the damage to coastal areas from 2012 Superstorm Sandy; the devastating 2013 flash floods in Colorado; the catastrophic collapse of sinkholes that have taken houses, cars, and lives; dust storms (haboobs) in Phoenix, Arizona, and elsewhere in drought-stricken areas; and the meteorite impact in Chelyabinsk, Russia.
Environmental issues are also addressed in this edition, such as hydraulic fracturing “fracking” for natural gas in shale and the consequences to groundwater supply and contamination (box 11.3).
A chapter-by-chapter breakdown of changes/additions is available in the Preface.
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Physical Geology, 15e, features five types of boxed readings:
Photos in the text are accompanied by an illustration depicting how a geologist would view the scene. Students gain experience by understanding how the trained eye of a geologist views a scene and understands the historical processes that have occurred, resulting in what they are seeing today.
Outstanding art program features accuracy in scale, realism, and aesthetic appeal.
Each chapter concludes with the following learning tools: