IDENTIFIERS

  • Current Taxon Name (Soil Name): Archrock
  • OSD
  • Series Extent
  • User Site ID: S1997CO069001
  • User Pedon ID: 97CO069001
  • Vegetation Plot ID: S1997CO069001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 98P0311
  • NCSS Pedon Lab Data NASIS Record ID - 10582
  • Print Date: 2/16/2025

    • 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: 40.4272003
  • Std. Longitude: -105.8028259
  • Datum: WGS84
  • Location Description: About 0.7 miles east northeast of Milner Pass in Rocky Mountain National Park.
  • State: Colorado
  • County: CO069—Larimer
  • MLRA: 48A—Southern Rocky Mountains
  • Non-MLRA Soil Survey Area: CO651—Rocky Mountain National Park, Colorado, Parts of Boulder, Grand, and Larimer Counties
  • 7.5 Minute USGS Quad: 40105-D7—Fall River Pass, Colorado

    • PEDON

  • Describers Name: Lee A. Neve, Nate Storck, Melissa Trenchik
  • Current Taxonomic Class: Loamy-skeletal, micaceous Typic Dystrocryepts
  • Current Taxon Kind: taxadjunct
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Archrock
  • PSC - 0 to 64 cm.
  • Classificaton Date - 7/23/2007
  • Sampled As Information:
  • Soil Name - Archrock
  • Taxonomic Class - Loamy-skeletal, paramicaceous Typic Cryumbrept
  • Taxon Kind - series
  • Classificaton Date - 8/20/1997
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: mountains
  • Landform: mountain
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Runoff: very high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: s moderate weathered mixed-igneous and metamorphic
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/20/1997 (actual site observation date)
  • Air Photo ID: 160-135
  • Plant Association Name: arsc/gero2
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, tundra
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ARSC

    GERO2

    ORTHO

    SAXIF

    SIAC

    TRMA3

    Artemisia scopulorum

    Geum rossii

    Orthocarpus

    Saxifraga

    Silene acaulis

    Trifolium macrocephalum

    alpine sagebrush

    Ross' avens

    owl's-clover

    saxifrage

    moss campion

    largehead clover

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    umbric epipedon

    cambic horizon

    paralithic contact

    0—20

    20—64

    64—0

    —-

    —-

    —-
    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

    23

    —

    —

    3597

    —

    70

    889

    —

    —

    2.2

    —

    —

    1.7

    —

    —

    —

    —

    —

    —

    —
    A—0 to 20 centimeters (0.0 to 7.9 inches); dark brown (7.5YR 3/2), brown (7.5YR 4/2), dry; gravelly loam; 16 percent clay; weak fine granular structure; soft, very friable, nonsticky, nonplastic; 25 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; very strongly acid, pH 5.0, hellige-truog; abrupt wavy boundary. Lab sample # 98P01886; moist when described;
    Bw—20 to 46 centimeters (7.9 to 18.1 inches); strong brown (7.5YR 4/6), reddish yellow (7.5YR 6/6), dry; very gravelly loam; 12 percent clay; weak medium subangular blocky structure; soft, very friable, nonsticky, nonplastic; 50 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; strongly acid, pH 5.3, hellige-truog; abrupt smooth boundary. Lab sample # 98P01887; moist when described;
    BC—46 to 64 centimeters (18.1 to 25.2 inches); brown (7.5YR 5/4), light brown (7.5YR 6/4), dry; very gravelly coarse sandy loam; 4 percent clay; massive; soft, very friable, nonsticky, nonplastic; 15 percent by volume 75-162-250 millimeter unspecified fragments and 40 percent by volume 2-39-75 millimeter unspecified fragments; noneffervescent; strongly acid, pH 5.3, hellige-truog; abrupt irregular boundary.; moist when described;
    Cr—64 to 89 centimeters (25.2 to 35.0 inches); fragments.