Rocks, and Minerals, and Geology of the Pacific Northwest profiles 100 rocks, minerals, and fossil types found in Oregon and Washington. The content is organized by the most common color for each type. Each entry has color photography showing a range of possibilities in appearance and a description of the defining physical properties and textures. Lists of minerals organized by other physical properties like habit, hardness, and cleavage are included, along with identification flow charts. Rocks, and Minerals, and Geology of the Pacific Northwest also includes 40 landscape features viewable along trails in Washington and Oregon that will empower hikers to make observations and interpretations about how these features came to be.