. Vegetation of Oregon and Washington. Botany Oregon Ecology; Botany Washington (State) Ecology. Figure 15. — General view of channeled scabland in the Columbia Basin of central Washing- ton; this area is characterized by numer- ous dry channels cut in Columbia River basalt and generally shallow, stony soils (photo courtesy of H. W. Smith). ters long in southeastern Washington. This material, deposited during the Pleistocene epoch, is made up of massive, tan-colored silt which may be over 45 meters thick. The Palouse area is characterized by smoothly roll- ing hills (fig. 16) and soils of high
. Vegetation of Oregon and Washington. Botany Oregon Ecology; Botany Washington (State) Ecology. Figure 15. — General view of channeled scabland in the Columbia Basin of central Washing- ton; this area is characterized by numer- ous dry channels cut in Columbia River basalt and generally shallow, stony soils (photo courtesy of H. W. Smith). ters long in southeastern Washington. This material, deposited during the Pleistocene epoch, is made up of massive, tan-colored silt which may be over 45 meters thick. The Palouse area is characterized by smoothly roll- ing hills (fig. 16) and soils of high fertility which are generally used for wheat and pea Figure 16. — Rolling Palouse Hills, composed of deep loess deposits, near Pullman, Washington, Columbia Basin province (photo courtesy of H. W. Smith).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Franklin, Jerry F. cn; Dyrness, C. T. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture
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