IDENTIFIERS

Current Taxon Name (Soil Name): Whitecross

OSD

Series Extent

User Site ID: S2004CO111001

User Pedon ID: S2004CO111001

Vegetation Plot ID: S2004CO111001

Lab Information:

Certified Lab Pedon Description - no

Lab Source ID - SSL

Lab Pedon # - 05N0326

NCSS Pedon Lab Data NASIS Record ID - 17269

Print Date: 5/20/2024

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: 37.9356995

Std. Longitude: -107.5394974

Datum: WGS84

Township: 43 N.

Range: 6 W.

Section: 33

PLSS Details: unsectionized area projected to be in SW quarter

Map Unit: 337—Whitecross-Rock outcrop complex, 45 to 75 percent slopes

Country: US—United States

State: Colorado

County: CO111—San Juan

Non-MLRA Soil Survey Area: CO672—Animas-Dolores Area, Colorado, Parts of Archuleta, Dolores, Hinsdale, La Plata, Montezuma, San Juan, and San Miguel Counties

PEDON

Describers Name: J.P. Pannell

Current Taxonomic Class: Loamy-skeletal, isotic Lithic Dystrocryepts

Current Taxon Kind: series

Pedon Type: classifies to current taxon name, full description

Pedon Purpose: full pedon description

Pedon Record Orgin: NASIS

Pedon #: 1

Correlated Information:

Soil Name - Whitecross

PSC - 25 to 48 cm.

Classificaton Date - 1/26/2005

Soil Taxonomic Edition - ninth edition

Moisture Class - udic

Sampled As Information:

Soil Name - Whitecross

Classificaton Date - 7/8/2004

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

SITE

Parent Material: slope alluvium derived from rhyolite

Landform: mountain slope

Geomorphic Component Mountains: mountainflank, upper third

Slope Complexity: simple

Slope Shape Across: convex

Slope Shape Down: linear

Runoff: medium

Drainage Class: well

Flooding: none flooding

Ponding: none ponding

Bedrock: indurated slight weathered rhyolite at 48cm

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 7/8/2004 (actual site observation date)

Air Photo ID: Handies P

Plant Association Name: Alpine tundra

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - rangeland, grassland

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Current Weather - partly cloudy

Current Air Temp - 40

Vegetation Plot Plants
Plant Symbol	Scientific Name	National Vernacular Name	Plant Type Group	Canopy Cover %	Vegetation Stata Level
CAREX DECA18 ELBA3 FEBR GEUM KOMY PHAL2 POBI6	Carex Deschampsia caespitosa Elymus bakeri Festuca brachyphylla Geum Kobresia myosuroides Phleum alpinum Polygonum bistortoides	sedge tufted hairgrass Baker's wheatgrass alpine fescue avens Bellardi bog sedge alpine timothy American bistort	— — — — — — — —	— — — — — — — —	— — — — — — — —

Pedon Restrictions
Kind	Hardness	Restriction Depth L-H	Restriction Thickness L-RV-H
		cm
bedrock, lithic	indurated	48 - 58	—

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon cambic horizon lithic contact	3—18 18—48 48—	—15— —30— —-

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
27	200	200	3840	—	280	1143	—	30	-1.1	—	—	0.6	—	—	—	—	7656	Silverton, CO	—

Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; 2 percent clay; very rapid permeability; 6.0 very fine roots throughout and 6.0 fine roots throughout; fragments.; very moist when described; observed in pit, small

A—3 to 18 centimeters (1.2 to 7.1 inches); brown (7.5YR 4/2), brown (7.5YR 5/2), dry; very gravelly loam; moderate medium granular structure; soft, very friable, nonsticky, nonplastic; moderate permeability; 6.0 very fine roots throughout and 6.0 fine roots throughout; 5 percent by volume nonflat indurated 250-625-1000 millimeter rhyolite fragments and 10 percent by volume nonflat indurated 75-162-250 millimeter rhyolite fragments and 40 percent by volume nonflat indurated 2-38-75 millimeter rhyolite fragments; noneffervescent, by hcl, unspecified; strongly acid, pH 5.4, bromcresol green; clear smooth boundary.; moist when described; observed in pit, small

Bw1—18 to 30 centimeters (7.1 to 11.8 inches); brown (7.5YR 4/3), brown (7.5YR 5/3), dry; very cobbly loam; weak medium subangular blocky parts to weak fine granular structure; soft, very friable, nonsticky, nonplastic; moderate permeability; 6.0 very fine roots throughout and 6.0 fine roots throughout; 2.0 fine tubular pores; 10 percent by volume nonflat indurated 250-625-1000 millimeter rhyolite fragments and 20 percent by volume nonflat indurated 2-38-75 millimeter rhyolite fragments and 20 percent by volume nonflat indurated 75-162-250 millimeter rhyolite fragments; noneffervescent, by hcl, unspecified; strongly acid, pH 5.4, bromcresol green; clear smooth boundary.; moist when described; observed in pit, small

Bw2—30 to 48 centimeters (11.8 to 18.9 inches); brown (7.5YR 4/4), light brown (7.5YR 6/4), dry; extremely cobbly loam; weak medium subangular blocky parts to weak fine granular structure; soft, very friable, slightly sticky, nonplastic; moderate permeability; 6.0 very fine roots throughout and 6.0 fine roots throughout; 2.0 fine tubular pores; 15 percent by volume nonflat indurated 250-625-1000 millimeter rhyolite fragments and 20 percent by volume nonflat indurated 2-38-75 millimeter rhyolite fragments and 40 percent by volume nonflat indurated 75-162-250 millimeter rhyolite fragments; noneffervescent, by hcl, unspecified; strongly acid, pH 5.4, bromcresol green; clear wavy boundary. Lab sample # 05N01848; moist when described; observed in pit, small

R—48 to 58 centimeters (18.9 to 22.8 inches); bedrock; very slow permeability; fragments.; observed in pit, small