Olympic (soil)
The Olympic soil series is a type of deep, dark reddish brown moderately fine-textured soil which has developed on mafic rock such as basalt. The series covers large areas in southwestern Washington and western Oregon, and usually supports luxuriant forests of Douglas-fir, red alder, western redcedar, western hemlock, and bigleaf maple.[1]
References
- https://soilseries.sc.egov.usda.gov/OSD_Docs/O/OLYMPIC.html Official Series Description
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