LOCATION TEMPLETON OR

Established Series
Rev. MDC/TDT/RWL
06/2011

TEMPLETON SERIES

The Templeton series consists of deep, well drained soils that formed in colluvium and residuum weathered from sedimentary rocks. Templeton soils are benches, broad ridgetops, and side slopes of mountains. Slopes are 0 to 90 percent. The mean annual temperature is about 49 degrees F. and the mean annual precipitation is about 80 inches.

TAXONOMIC CLASS: Fine-silty, isotic, isomesic Andic Humudepts

TYPICAL PEDON: Templeton medial silt loam, 70 percent complex convex south-facing slope in a clear cut area. When described the soil was moist throughout. (Colors are for moist soil unless otherwise stated.)

Oi--0 to 1 inch; slightly decomposed litter of leaves, needles and twigs (1 to 4 inches thick).

A1--1 to 7 inches; very dark brown (7.5YR 2/2) medial silt loam, dark grayish brown (10YR 4/2) dry; moderate fine granular structure; hard, friable, slightly sticky and slightly plastic; weakly smeary; many very fine and few fine and medium roots; many very fine and few fine and medium irregular pores; 13 percent pararock fragments; strongly acid (pH 5.1); clear smooth boundary.

A2--7 to 17 inches; dark brown (7.5YR 3/2) medial silt loam, grayish brown (10YR 5/2) dry; moderate fine granular structure; hard, friable, slightly sticky and slightly plastic; many very fine and few fine and medium roots; many very fine and few fine and medium irregular pores; about 10 percent pararock fragments; very strongly acid (pH 5.0); clear wavy boundary. (Combined A horizon is 10 to 20 inches thick)

Bw1--17 to 24 inches; reddish brown (5YR 4/4) silty clay loam, brown (7.5YR 5/4) dry; moderate fine and medium subangular blocky structure; hard, friable, moderately sticky and moderately plastic; common very fine to coarse roots; common very fine irregular and very fine and fine tubular pores; about 10 percent pararock fragments; very strongly acid (pH 4.9); clear wavy boundary.

Bw2--24 to 31 inches; yellowish red (5YR 5/6) silty clay loam, light brown (7.5YR 6/4) dry; weak fine and medium subangular blocky structure; hard, friable, moderately sticky and moderately plastic; common very fine to coarse roots; common very fine tubular and irregular pores; about 10 percent pararock fragments; very strongly acid (pH 4.8); clear wavy boundary. (Combined Bw horizon is 8 to 25 inches thick)

Bw3--31 to 43 inches; strong brown (7.5YR 5/6, 5/8) silty clay loam, light brown (7.5YR 6/4) dry; weak medium subangular blocky structure; hard, firm, moderately sticky and moderately plastic; few very fine, medium and coarse roots; few very fine irregular and fine and medium tubular pores; about 13 percent pararock fragments; very strongly acid (pH 4.8); clear wavy boundary. (0 to 18 inches thick)

Cr--43 inches; multicolored (5YR to 10YR hue) partially weathered fractured siltstone with few very fine and fine roots in the fractures.

TYPE LOCATION: Coos County, Oregon; about 2 miles east of Lakeside; 2,200 feet east and 1,900 feet north of southwest corner of section 16, T. 23 S., R. 12 W.

RANGE IN CHARACTERISTICS: The mean annual soil temperature is 47 to 54 degrees F. The difference between mean summer and mean winter soil temperature varies from 5 to 9 degrees F. The soil is usually moist but is dry for less than 45 consecutive days during the summer. The soil is 40 to more than 60 inches deep to weathered siltstone and sandstone. The particle-size control section has an average of 25 to 35 percent clay and less than 15 percent coarser than very fine sand. Measured clay commonly is higher than field estimated clay. The umbric epipedon is 10 to 20 inches thick. The upper 5 to 8 inches of the epipedon has an acid-oxalate aluminum plus one-half iron of 2.0 to 3.0 percent, a moist bulk density of 0.75 to 0.90 g/cc, phosphate retention of more than 85 percent, and 15-bar moisture of more than 15 percent. The lower part to a depth of 20 inches has an acid-oxalate aluminum plus one-half iron of 1.0 to 3.0 percent and a moist bulk density of 0.80 to 1.0 g/cc. Andic soil properties do not exceed beyond 14 inches. The soil has 20 to 30 kilograms of organic carbon per square meter to a depth of 1 meter.

The A horizon has hue of 10YR to 5YR moist and dry, value of 2 or 3 moist, 3 to 5 dry, and chroma of 2 or 3 moist and dry. It has 10 to 15 percent organic matter and 0 to 15 percent subangular shaped paragravel. It is extremely acid to strongly acid.

The Bw horizon has hue of 10YR to 5YR moist and dry, value of 3 to 5 moist, 5 or 6 dry, and chroma of 4 to 8 moist and dry. Texture is silty clay loam or silt loam and has 0 to 50 percent subangular shaped pararock fragments. It is extremely acid or very strongly acid.

The Cr horizon has hue of 7.5YR or 10YR typically with segments of 5YR hue in some pedons from less decomposed parent material. It has value of 4 or 5 moist, 5 to 7 dry, and chroma of 4 to 8.

COMPETING SERIES: This is the Ecola, Knappa, and Walluski series. Ecola soils are 20 to 40 inches deep to a paralithic contact. Knappa soils have an umbric epipedon 20 to 30 inches thick, and when present, have rounded or subrounded rock or pararock fragments of alluvial origin. Walluski soils have redox depletions within a depth of 24 to 40 inches.

GEOGRAPHIC SETTING: Templeton soils are benches, broad ridgetops, and side slopes of mountains. These soils formed in colluvium and residuum weathered from sedimentary rocks. Elevations are 50 to 1,800 feet. Slopes are 0 to 90 percent. The marine climate is cool and wet in the winter and cool and moist with a short dry season of less than 45 consecutive days during the summer. The mean annual precipitation is 60 to 110 inches. The mean annual temperature is 45 to 53 degrees F. The mean January temperature is 42 to 46 degrees F. and the mean July temperature is 58 to 62 degrees F. The frost-free season is 100 to 245 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Millicoma and Salander soils. Millicoma soils are 20 to 40 inches deep to bedrock and are loamy-skeletal. Salander soils are dominated by amorphous material. These soils are on coastal hills and mountains.

DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.

USE AND VEGETATION: These soils are used for timber production, wildlife habitat, and limited use for homesites. Some areas are cleared and used for grazing. Native vegetation is Sitka spruce, western hemlock, western redcedar, Douglas-fir, red alder, salmonberry, blackberry and western swordfern.

DISTRIBUTION AND EXTENT: Western slopes of the Coast Range in Oregon; MLRA 4A. The series is extensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Coos County, Oregon, 1983.

REMARKS: Diagnostic horizons and features in this pedon include:
Umbric epipedon - from 1 to 17 inches.
Cambic horizon - from 17 to 43 inches.
Andic feature - from 1 to 17 inches with the zone from 1 to 7 inches having andic soil properties.
Particle-size control section - from 11 to 41 inches.

Depths to diagnostic horizons and features are measured from the top of the first mineral layer.

A proposal was submitted to NSSC (2000) to revise the definition of medial to also include those soil properties qualifying for the Andic subgroup under criteria #1 for andic soil properties. If accepted, medial modifiers would be used for those horizons meeting the andic subgroup criteria although not always meeting andic soil properties.

ADDITIONAL DATA: Characterization data on the typical pedon (S72Oreg-6-2-(1-6) completed at SCS lab at Riverside, California.

National Cooperative Soil Survey
U.S.A.