IDENTIFIERS

Current Taxon Name (Soil Name): Madturkey

OSD

Series Extent

User Site ID: 07CA601916

User Pedon ID: 07CA601916

Vegetation Plot ID: 07CA601916

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - NSSL

Lab Pedon # - 08N0569

NCSS Pedon Lab Data NASIS Record ID - 20257

Print Date: 12/11/2024

LOCATION

Location In Web Soil Survey

AOI is roughly a square mile and pedon is marked in the center.

Location in SoilWeb

Location in Google Maps

Std. Latitude: 40.1577556

Std. Longitude: -123.8571750

Datum: WGS84

Location Description: Seelycreek Watershed

Map Unit: 304—Seelycreek-Madturkey-Gibsoncreek complex, 30 to 50 percent slopes

State: California

County: CA023—Humboldt

MLRA: 4B—Coastal Redwood Belt

Non-MLRA Soil Survey Area: CA601—Humboldt County, South Part, California

7.5 Minute USGS Quad: 40123-B7—Miranda, California

PEDON

Describers Name: Jennifer T. Berman

Current Taxonomic Class: Fine, mixed, superactive, isomesic Aquultic Haplustalfs

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 916

Correlated Information:

Soil Name - Madturkey

Classificaton Date - 4/29/2016

Sampled As Information:

Soil Name - Madturkey

Classificaton Date - 9/20/2007

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: colluvium derived from siltstone and/or residuum weathered from siltstone

Landscape: mountains

Landform: ridge

Geomorphic Component Mountains: mountaintop

Hill Slope Profile: shoulder

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: convex

Runoff: high

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Geology: Marine And Nonmarine Overlap Deposits member of the Quaternary And Tertiary Overlap Deposits group.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 9/20/2007 (actual site observation date)

Air Photo ID: 6248-26

Plant Association Name: Douglas fir-tanoak-redwood

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - intermixed conifers and hardwoods

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion sheet

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
ARME LIDE3 PSME SESE3 UMCA	Arbutus menziesii Lithocarpus densiflorus Pseudotsuga menziesii Sequoia sempervirens Umbellularia californica	Pacific madrone tanoak Douglas-fir redwood California laurel	— — — — —	— — — — —	— — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon	0—14 42—200	—14— —158—

Site Soil Temperature
Site Obs. Date	Depth	Sensor Kind	Temperature
	cm		C
9/20/2007	50	—	15

Setting and Climate
Slope	Slope Length USLE	Upslope Length	Elev.	Corr. Elev	Aspect	MAP	REAP	FFD	MAAT	MSAT	MWAT	MAST	MSST	MWST	MFFP	PE Index	Climate Station ID	Climate Station Name	Climate Station Type
%	m				degrees	mm	mm		C						mm
14	—	—	305	—	100	1650	—	260	11	—	—	10	—	—	—	—	—	—	—

Oi—0 to 4 centimeters (0.0 to 1.6 inches); 75 percent very dark grayish brown (10YR 3/2) and 25 percent grayish brown (10YR 5/2), black (10YR 2/1) rubbed, moist; slightly decomposed plant material; fragments; noneffervescent; moderately acid, pH 5.8, chlorophenol red; abrupt wavy boundary.; observed in cut

A—4 to 14 centimeters (1.6 to 5.5 inches); brown (10YR 5/3) crushed, very dark grayish brown (10YR 3/2) crushed, moist; silt loam; 20 percent clay; moderate very fine subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; 1.0 very fine roots throughout and 1.0 medium roots throughout and 2.0 fine roots throughout; 0.5 very fine tubular and 0.5 medium tubular and 0.5 fine tubular and 0.5 coarse tubular pores; 2 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear wavy boundary.; moderately dry when described; observed in cut

AB—14 to 42 centimeters (5.5 to 16.5 inches); pale brown (10YR 6/3) broken face, brown (10YR 4/3) broken face, moist; silty clay loam; 30 percent clay; moderate fine subangular blocky structure; moderately hard, friable, moderately sticky, moderately plastic; 3.0 very fine roots throughout and 3.0 medium roots throughout and 1.0 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular and 1.0 coarse tubular pores; 5 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; moderately acid, pH 6.0, chlorophenol red; clear wavy boundary.; moderately dry when described; observed in cut

Bt1—42 to 63 centimeters (16.5 to 24.8 inches); light yellowish brown (10YR 6/4) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silty clay loam; 36 percent clay; moderate fine subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; 1.0 very fine roots throughout and 3.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine tubular and 0.5 medium tubular and 1.0 fine tubular and 0.5 coarse tubular pores; 5 percent faint clay films on all faces of peds; 10 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; strongly acid, pH 5.4, chlorophenol red; clear wavy boundary.; moderately dry when described; observed in cut

Bt2—63 to 80 centimeters (24.8 to 31.5 inches); light yellowish brown (10YR 6/4) broken face, dark yellowish brown (10YR 4/4) broken face, moist; paragravelly silty clay loam; 38 percent clay; moderate fine subangular blocky, and moderate very fine subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 1.0 very coarse roots throughout and 7.0 medium roots throughout and 0.5 fine roots throughout and 1.0 coarse roots throughout; 1.0 very fine tubular and 0.5 medium tubular and 1.0 fine tubular and 0.5 coarse tubular pores; 40 percent faint clay films on all faces of peds; 10 percent fine prominent irregular noncoherent cemented gray (2.5Y 5/1), moist, iron depletions in matrix and 10 percent fine distinct irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 15 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; strongly acid, pH 5.4, chlorophenol red; clear wavy boundary.; slightly moist when described; observed in cut

Bt3—80 to 130 centimeters (31.5 to 51.2 inches); light yellowish brown (10YR 6/4) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silty clay loam; 38 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 5.0 medium roots throughout and 0.5 fine roots throughout and 2.0 coarse roots throughout; 3.0 very fine tubular and 2.0 medium tubular and 1.0 fine tubular and 2.0 coarse tubular pores; 40 percent faint clay films on all faces of peds; 30 percent fine prominent irregular noncoherent cemented gray (2.5Y 5/1), moist, iron depletions in matrix and 30 percent fine distinct irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 2 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; strongly acid, pH 5.2, chlorophenol red; clear wavy boundary.; slightly moist when described; observed in cut

BCt—130 to 150 centimeters (51.2 to 59.1 inches); light yellowish brown (10YR 6/4) broken face, dark yellowish brown (10YR 4/4) broken face, moist; silty clay loam; 36 percent clay; weak fine subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 3.0 medium roots throughout and 0.5 fine roots throughout; 1.0 very fine tubular and 1.0 medium tubular and 1.0 fine tubular and 1.0 coarse tubular pores; 10 percent faint clay films on all faces of peds; 30 percent fine prominent irregular noncoherent cemented gray (2.5Y 5/1), moist, iron depletions in matrix and 30 percent fine distinct irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 2 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; strongly acid, pH 5.2, chlorophenol red; clear wavy boundary.; slightly moist when described; observed in cut

C—150 to 200 centimeters (59.1 to 78.7 inches); light brownish gray (2.5Y 6/2) broken face, dark gray (2.5Y 4/1) broken face, moist; silty clay loam; 36 percent clay; structureless massive; very hard, firm, moderately sticky, moderately plastic; 0.5 very fine roots throughout and 0.5 medium roots throughout and 0.5 fine roots throughout; 0.5 very fine tubular and 0.5 fine tubular pores; 50 percent fine distinct irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron-manganese masses in matrix; 2 percent by volume nonflat subangular weakly coherent cemented 2-25-75 millimeter siltstone, unspecified fragments; noneffervescent; moderately acid, pH 5.6, chlorophenol red.; slightly moist when described; observed in cut