LOCATION MENAGERIE               OR

Tentative Series
DRJ/JGM/KMS
02/2025

MENAGERIE SERIES

Landscape--western Cascade Mountains
Landform--complex landslides, mountain slopes, mountaintops
Slope--0 to 90 percent
Parent material--colluvium and till derived from volcanic rocks mixed with volcanic ash
Mean annual precipitation--about 2100 mm
Mean annual air temperature--about 6 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Medial, amorphic, frigid Typic Hapludands

TYPICAL PEDON: Menagerie gravelly medial silt loam on a 35-percent, forested slope at an elevation of 1040 m

Oi--0 to 2 cm; slightly decomposed plant material; abrupt wavy boundary

A1--2 to 16 cm; gravelly medial silt loam, brown (7.5YR 4/2) dry, dark brown (7.5YR 3/2) moist; moderate fine granular structure; very friable, soft, slightly sticky and nonplastic; many very fine, common medium and coarse, and few fine roots; many very fine and fine irregular pores and common medium and coarse tubular pores; 15 percent gravel and 5 percent cobbles; strongly acid (pH 5.3); clear wavy boundary

A2--16 to 36 cm; gravelly medial silt loam, brown (7.5YR 5/3) dry, dark brown (7.5YR 3/3) moist; moderate fine subangular blocky structure; very friable, soft, slightly sticky and nonplastic; many very fine, common medium and coarse, and few fine roots; many very fine and fine irregular pores and common medium and coarse tubular pores; 15 percent gravel and 5 percent cobbles; strongly acid (pH 5.4); abrupt wavy boundary

AB--36 to 61 cm; gravelly medial silt loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/3) moist; moderate medium subangular blocky structure; friable, slightly hard, slightly sticky and slightly plastic; many very fine, common medium, and few fine and coarse roots; many very fine dendritic tubular and irregular pores and common fine, medium, and coarse tubular pores; 10 percent gravel and 5 percent cobbles; moderately acid (pH 5.6); gradual wavy boundary

Bw1--61 to 110 cm; gravelly medial silt loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/3) moist; weak medium subangular blocky structure; friable, slightly hard, slightly sticky and slightly plastic; common very fine and few fine and medium roots; common very fine and fine dendritic tubular pores and common very fine and fine and few medium tubular pores; 10 percent gravel and 5 percent cobbles; moderately acid (pH 5.7); clear wavy boundary

Bw2--110 to 150 cm; medial silt loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/4) moist; weak medium subangular blocky structure; friable, slightly hard, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine dendritic tubular pores and common very fine and fine tubular pores; 5 percent gravel and 5 percent cobbles; moderately acid (pH 5.8)

TYPE LOCATION: Linn County, Oregon, about 36 km east of Sweet Home and 6.5 km northeast of the junction of Upper Soda Fork Road and OR Highway 20; 350 m south and 130 m east of the northwest corner of section 8, T. 13 S., R. 5 E., Willamette Meridian; latitude 44.457333, longitude -122.2445833, datum WGS 84 (coordinates determined with a GPS)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--5 to 7 degrees C
Thickness of umbric epipedon--25 to 50 cm
Reaction--pH 5.1 to 6.0

Estimated properties of layers with andic soil properties
Ammonium oxalate extractable Al plus 1/2 Fe--2.0 to 4.0 percent
Particles 0.02 to 2.0 mm diameter--greater than 30 percent of the fine-earth fraction
Volcanic glass content in 0.02- to 2.0-mm fraction--5 to 30 percent
Phosphate retention--85 to 100 percent
15-bar water retention--30 to 70 percent (undried samples), greater than 15 percent (dried samples)
1/3-bar bulk density--0.6 to 1.1 g/cm3

O horizon
*Thickness--1 to 10 cm

A1 horizon
*Hue--10YR, 7.5YR
*Value--2 to 3 moist, 3 to 5 dry
*Chroma--2 or 3 moist or dry
*Fine-earth texture--medial silt loam, medial loam
*Clay content--15 to 22 percent
*Sand content--20 to 40 percent
*Total fragment content--5 to 35 percent
*Gravel content--5 to 30 percent
*Cobble content--0 to 10 percent

A2 horizon
*Hue--10YR, 7.5YR
*Value--2.5 or 3 moist, 4 or 5 dry
*Chroma--2 to 4 moist, 3 or 4 dry
*Fine-earth texture--medial silt loam, medial loam
*Clay content--15 to 22 percent
*Sand content--20 to 40 percent
*Total fragment content--5 to 35 percent
*Gravel content--5 to 30 percent
*Cobble content--0 to 10 percent
*Combined thickness of A horizons--25 to 50 cm

AB horizon, or BA horizon (where present)
*Hue--10YR, 7.5YR
*Value--3 or 4 moist, 4 to 6 dry
*Chroma--3 or 4 moist or dry
*Fine-earth texture--medial silt loam, medial loam
*Clay content--18 to 27 percent
*Sand content--20 to 40 percent
*Total fragment content--5 to 35 percent
*Gravel content--5 to 30 percent
*Cobble content--0 to 10 percent
*Thickness--0 to 30 cm

Bw horizons
*Hue--2.5Y, 10YR, 7.5YR
*Value--3 to 5 moist, 5 to 7 dry
*Chroma--3 or 4 moist, 3 to 6 dry
*Fine-earth texture--medial silt loam, medial loam
*Clay content--18 to 27 percent
*Sand content--15 to 35 percent
*Total fragment content--0 to 35 percent
*Gravel content--0 to 30 percent
*Cobble content--0 to 10 percent
*Combined thickness--50 to 125 cm

COMPETING SERIES:
Larchmount--umbric epipedon greater than 50 cm thick
Lempira--umbric epipedon greater than 50 cm thick
Zynbar--ochric epipedon

GEOGRAPHIC SETTING:
Elevation--670 to 1100 m
Climate--cool, wet winters; warm, dry summers
Mean annual precipitation--1800 to 2700 mm
Mean annual air temperature--5 to 7 degrees C
Frost-free period--90 to 150 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Coolcamp--averages greater than 35 percent rock fragments in the particle-size control section; located on mountain slopes
Cadenza, Fernwood--andic soil properties in layers with thickness totaling less than 36 cm; located on mountain slopes

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high

USE AND VEGETATION:
Use--timber production, water supply, wildlife habitat, recreation
Potential natural vegetation--Douglas-fir, western hemlock, Pacific rhododendron, Cascade barberry, salal, whiteveined wintergreen, red huckleberry, snow raspberry, twinflower

DISTRIBUTION AND EXTENT: Western Cascade Mountains, Oregon; MLRA 3; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED: Willamette National Forest, Linn County, Oregon; name from Menagerie Wilderness Area

REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 2 to 102 cm
*Umbric epipedon--zone from 2 to 36 cm
*Cambic horizon--zone from 36 to 150 cm
*Andic soil properties--zone from 2 to 150 cm
*Volcanic glass--zone from 2 to 150 cm

09/2023--all mineral horizons meet criteria #3 for andic soil properties in the 13th edition of Keys to Soil Taxonomy. All pedons have third-bar bulk density low enough to also meet criteria #2 (no ash required) throughout the umbric epipedon, and some pedons meet criteria #2 throughout the profile.

ADDITIONAL DATA: Type location user site ID--2013OR043003

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National Cooperative Soil Survey
U.S.A.