LOCATION HENLINE OREstablished Series
TAXONOMIC CLASS: Loamy-skeletal, isotic Typic Humicryepts
TYPICAL PEDON: Henline very stony loam, brush logged. (Colors are for moist soil unless otherwise noted.)
Oi--0 to 1 inch; slightly decomposed plant and animal matter.
A--1 to 11 inches; very dark brown (10YR 2/2) extremely stony sandy loam, dark grayish brown (10YR 4/2) dry; weak coarse subangular blocky structure; soft, very friable, nonsticky and nonplastic; many roots; many very fine pores; 65 percent rock fragments; slightly acid (pH 6.4); clear smooth boundary. (7 to 15 inches thick)
C--11 to 31 inches; dark brown (10YR 3/3) extremely cobbly sandy loam, brown (10YR 5/3) dry; massive; soft, very friable, nonsticky and nonplastic; many roots; many irregular pores; 65 percent rock fragments; slightly acid (pH 6.4); abrupt wavy boundary. (10 to 30 inches thick)
2R--31 inches; fractured basalt.
TYPE LOCATION: Marion County, Oregon; 100 feet north of logging road southeast 1/4 northeast 1/4, sec. 21, T. 9 S., R. 4 E.
RANGE IN CHARACTERISTICS: The mean soil temperature ranges from 43 to 47 degrees F, and the mean summer soil temperature is less than 47 degrees F, in pedons with an O horizon. The soils are usually moist and are dry between depths of 8 and 24 inches for less than 45 consecutive days during the summer. Depth to basalt (lithic contact) ranges from 20 to 40 inches. The soils have 45 to 85 percent rock fragments by volume of which 10 to 35 percent are cobbles and stones and 35 to 50 percent are gravel. The amount of stones on the surface ranges from .01 to about 15 percent. The profile ranges from slightly acid to strongly acid. The A and C horizon are sandy loam or fine sandy loam and have less than 18 percent clay. The umbric epipedon is 7 to 15 inches thick.
The A horizon has hue of 10YR or 7.5YR, value of 2 or 3 moist, and 4 or 5 dry. It has weak granular or subangular blocky structure.
The C horizon has hue of 10YR or 7.5YR, value of 3 or 4 moist, 5 or 6 dry, and chroma of 3 or 4 moist and dry. It is massive or single grained.
COMPETING SERIES: These are the Bigelow, Crannler, Inpendence, Moohoo, and Walcott series. Bigelow, Moohoo, Inpendence, and Walcott soils are deeper than 40 inches to bedrock. Crannler soils have greater than 15 percent coarse and very coarse sand.
GEOGRAPHIC SETTING: Henline soils are on uplands at elevations of 2,700 to 4,700 feet. Slopes are 6 to 90 percent. The soils formed in colluvial materials weathered from basic igneous rock. The soils are in a humid temperate climate having a mean annual temperature of 55 degrees F, and a mean annual precipitation of 70 to 120 inches. The frost-free period is 80 to 110 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Whetstone and Cruiser soils. Whetstone soils have a spodic horizon. Cruiser soils have an ochric epipedon and have less than 35 percent rock fragments.
DRAINAGE AND PERMEABILITY: Well drained; medium to very rapid runoff; moderately rapid permeability.
USE AND VEGETATION: Used for woodland. The vegetation is Douglas-fir, noble fir, Pacific silver fir, mountain hemlock, tall blue huckleberry, Pacific rhododendron and cascade Oregon-grape.
DISTRIBUTION AND EXTENT: Western footslopes of the Cascade Mountains in the Willamette Valley, Oregon. The series is extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Marion County, Oregon, 1973.
REMARKS: Diagnostic horizons and other features:
Umbric epipedon - 1 to 11 inches
All depths to diagnostic horizons and other features are measured from the top of the first mineral horizon.