Abstract
AbstractSoil‐geomorphology studies in the upper Rogue River Valley in Jackson County, Oregon have related soil distribution to a step sequence of six geomorphic surfaces ranging in age from late Holocene to middle Pleistocene. Haploxerolls of the two flood plains have only A horizons. The soils of the low Holocene terrace have developed an argillic horizon within 2,350 years and are classified as Argixerolls. Durochrepts and Argixerolls of the two late Pleistocene surfaces have two kinds of periglacial patterned ground and one soil has a duripan that greatly affects land use. The middle Pleistocene surface has Haploxeralfs and Chromoxererts. The surfaces and soils are compared to those previously studied in the Willamette Valley.
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