IDENTIFIERS

Current Taxon Name (Soil Name): Secunda

OSD

Series Extent

User Site ID: S2002ID057008

User Pedon ID: S2002ID057008

Vegetation Plot ID: S2002ID057008

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 02N1050

NCSS Pedon Lab Data NASIS Record ID - 15621

Print Date: 11/12/2024

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: 46.9491653

Std. Longitude: -116.5436096

Datum: WGS84

Township: 42N

Range: 2W

Section: 36

PLSS Details: 450 feet south and 170 feet east of the northwest corner

Location Description: 9 miles east and 2 miles north of Harvard, Idaho.

Map Unit: Pa1—Secunda-Flewsie complex, 25 to 60 percent slopes

State: Idaho

County: ID057—Latah

MLRA: 43A—Northern Rocky Mountains

Non-MLRA Soil Survey Area: ID057—Latah County, Idaho

7.5 Minute USGS Quad: 46116-H5—Sand Mountain, Idaho

PEDON

Describers Name: GLENN HOFFMANN

Current Taxonomic Class: Ashy over loamy, aniso, amorphic over mixed, superactive, frigid Alfic Udivitrands

Current Taxon Kind: series

Pedon Type: OSD pedon

Pedon Purpose: laboratory sampling site

Pedon Record Orgin: NASIS

Pedon #: 8

Correlated Information:

Soil Name - Secunda (flagged as OSD)

PSC - 3 to 103 cm.

Classificaton Date - 3/25/2013

Classifier - Brian Gardner

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - typic

Sampled As Information:

Soil Name - Secunda

Classificaton Date - 7/11/2002

Dynamic Soil Properties:

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: volcanic ash over residuum weathered from quartzite

Landscape: complex mountains

Landform: upper mountain slope

Geomorphic Component Hills: side slope

Geomorphic Component Mountains: mountainflank

Hill Slope Profile: backslope

Slope Shape Across: concave

Slope Shape Down: linear

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: quartzite

Geology: Wallace formation of the Belt Supergroup group.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

Other Vegetative Class: CN570 - western hemlock/queencup beadlily—Forest Habitat Types of Northern Idaho (GTR-INT-236)

SITE OBSERVATION

Observation Date: 7/11/2002 (actual site observation date)

Plant Association Name: tshe-clun

Surface Cover Properties:

Site Obs. Cover Kind 1 - tree cover

Site Obs. Cover Kind 2 - conifers

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CHUM CLUN LAOC LIBO PIMO PSMEG THPL TSHE THPL PSMEG ABGR LAOC TSHE PIMO3 CHUM CLUN2 LIBOL2 PYSE SYAL PAMY	Chimaphila umbellata Clarkia unguiculata Larix occidentalis Lilium bolanderi Pinus monophylla Pseudotsuga menziesii var. glauca Thuja plicata Tsuga heterophylla Thuja plicata Pseudotsuga menziesii var. glauca Abies grandis Larix occidentalis Tsuga heterophylla Pinus monticola Chimaphila umbellata Clintonia uniflora Linnaea borealis ssp. longiflora Pyrola secunda Symphoricarpos albus Paxistima myrsinites	pipsissewa elegant clarkia western larch Bolander's lily singleleaf pinyon Rocky Mountain Douglas-fir western redcedar western hemlock western redcedar Rocky Mountain Douglas-fir grand fir western larch western hemlock western white pine pipsissewa bride's bonnet longtube twinflower — common snowberry Oregon boxleaf	— — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — —	— — — — — — — — — — — — — — — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon andic soil properties cambic horizon argillic horizon	0—18 8—48 18—48 48—99	—18— —40— —30— —51—

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
54	—	—	1015	—	30	990	—	—	—	—	—	—	—	—	—	—	—	—	—

Oi—0 to 3 centimeters (0.0 to 1.2 inches); moderately decomposed plant material; fragments. Lab sample # 02N05400; dry when described;

Oe—3 to 8 centimeters (1.2 to 3.1 inches); highly decomposed plant material; 3.0 very fine and fine roots; fragments; abrupt wavy boundary. Lab sample # 02N05401; dry when described;

A—8 to 18 centimeters (3.1 to 7.1 inches); very dark brown (7.5YR 2.5/3) crushed, brown (7.5YR 5/3) crushed, dry; ashy silt loam; 38 percent sand; 54 percent silt; 9 percent clay; moderate very fine and fine granular structure; soft, very friable, noncoherent, nonsticky, nonplastic; 6.0 very fine roots and 3.0 fine and medium roots; 3.0 very fine irregular pores; 5 percent by volume nonflat subangular indurated 2-5-75 millimeter quartzite fragments; clear wavy boundary. Lab sample # 02N05402; slightly moist when described;

Bw1—18 to 33 centimeters (7.1 to 13.0 inches); dark brown (7.5YR 3/4) crushed, brown (7.5YR 5/4) crushed, dry; ashy silt loam; 37 percent sand; 57 percent silt; 6 percent clay; weak very fine and fine subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; 6.0 very fine roots and 3.0 fine and medium roots and 0.5 coarse roots; 3.0 very fine irregular pores; 3 percent by volume nonflat subangular indurated 2-5-75 millimeter quartzite fragments; clear wavy boundary. Lab sample # 02N05403; slightly moist when described;

Bw2—33 to 48 centimeters (13.0 to 18.9 inches); dark yellowish brown (10YR 3/4) crushed, light yellowish brown (10YR 6/4) crushed, dry; ashy silt loam; 39 percent sand; 56 percent silt; 5 percent clay; weak very fine and fine subangular blocky, and weak medium subangular blocky structure; soft, very friable, noncoherent, nonsticky, nonplastic; 6.0 very fine roots and 0.2 very coarse roots and 3.0 fine and medium roots and 0.3 coarse roots; 0.5 very fine irregular and 0.5 very fine dendritic tubular pores; fragments; abrupt wavy boundary. Lab sample # 02N05404; slightly moist when described;

2Bt—48 to 79 centimeters (18.9 to 31.1 inches); dark brown (7.5YR 3/4) interior, light brown (7.5YR 6/3) interior, dry; fine sandy loam; 60 percent sand; 34 percent silt; 6 percent clay; moderate fine and medium subangular blocky structure; slightly hard, very friable, extremely weakly coherent, slightly sticky, nonplastic; 3.0 very fine roots and 0.2 very coarse roots and 0.2 medium roots and 0.3 fine roots and 0.3 coarse roots; 6.0 very fine dendritic tubular and 0.3 medium dendritic tubular and 0.5 fine dendritic tubular and 0.1 coarse dendritic tubular pores; 10 percent faint silt coats on surfaces along pores and 10 percent faint clay films on all faces of peds; 1 percent fine platy mica flakes, unspecified; 5 percent by volume nonflat subangular indurated 2-5-75 millimeter quartzite fragments; abrupt broken boundary. Lab sample # 02N05405; slightly moist when described;

2BCt—79 to 99 centimeters (31.1 to 39.0 inches); dark yellowish brown (10YR 4/6) interior, light yellowish brown (10YR 6/4) interior, dry; loamy sand; 81 percent sand; 15 percent silt; 4 percent clay; weak coarse subangular blocky, and weak fine and medium subangular blocky structure; slightly hard, very friable, extremely weakly coherent, nonsticky, slightly plastic; 3.0 very fine roots and 0.5 fine and medium roots; 0.5 very fine dendritic tubular and 0.5 very fine irregular pores; 5 percent faint clay films on all faces of peds and 5 percent faint clay films on surfaces along pores and 10 percent faint silt coats on surfaces along pores; 3 percent fine platy mica flakes, unspecified; 11 percent by volume nonflat subangular indurated 2-5-75 millimeter quartzite fragments; clear wavy boundary. Lab sample # 02N05406; slightly moist when described;

2C1—99 to 127 centimeters (39.0 to 50.0 inches); 70 percent dark yellowish brown (10YR 4/6) broken face and 30 percent strong brown (7.5YR 5/8) broken face, 70 percent light yellowish brown (10YR 6/4) broken face and 30 percent reddish yellow (7.5YR 6/8) broken face, dry; very gravelly loamy sand; 82 percent sand; 14 percent silt; 4 percent clay; massive; slightly hard, very friable, extremely weakly coherent, nonsticky, nonplastic; 0.5 very fine and fine roots; 3.0 very fine dendritic tubular and 3.0 very fine irregular and 0.5 fine irregular pores; 5 percent fine platy mica flakes, unspecified; 38 percent by volume nonflat subangular indurated 2-15-75 millimeter quartzite fragments; gradual wavy boundary. Lab sample # 02N05407; slightly moist when described;

2C2—127 to 193 centimeters (50.0 to 76.0 inches); 50 percent dark yellowish brown (10YR 4/6) broken face and 50 percent strong brown (7.5YR 5/8) broken face, 50 percent yellow (10YR 7/6) broken face and 50 percent reddish yellow (7.5YR 6/8) broken face, dry; very gravelly sand; 86 percent sand; 10 percent silt; 4 percent clay; massive; slightly hard, very friable, extremely weakly coherent, nonsticky, nonplastic; 0.5 very fine and fine roots; 3.0 very fine dendritic tubular pores; 4 percent fine platy mica flakes, unspecified; 40 percent by volume nonflat subangular indurated 2-20-75 millimeter quartzite fragments; clear wavy boundary. Lab sample # 02N05408; slightly moist when described;

2C3—163 to 185 centimeters (64.2 to 72.8 inches); 60 percent dark yellowish brown (10YR 4/6) broken face and 40 percent yellowish brown (10YR 5/8) broken face, 60 percent yellow (10YR 7/6) broken face and 40 percent yellowish brown (10YR 5/8) broken face, dry; gravelly loamy sand; 83 percent sand; 12 percent silt; 5 percent clay; massive; slightly hard, friable, extremely weakly coherent, nonsticky, nonplastic; 0.5 very fine roots; 3.0 very fine irregular and 0.5 very fine dendritic tubular pores; 5 percent fine platy mica flakes, unspecified; 27 percent by volume nonflat subangular indurated 2-20-75 millimeter quartzite fragments. Lab sample # 02N05409; slightly moist when described;