IDENTIFIERS
Current Taxon Name (Soil Name):
Twotop
OSD
Series Extent
User Site ID:
S1958SD113004
User Pedon ID:
S1958SD113004
Vegetation Plot ID:
S1958SD113004
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
SSL
Lab Pedon # -
40A2432
NCSS Pedon Lab Data NASIS Record ID -
37128
Print Date:
11/23/2024
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:
43.1766663
Std. Longitude:
-102.8147202
Datum:
WGS84
Township:
37N
Range:
46W
Section:
18
PLSS Details:
0.2 of a mile E of the gate and 0.15 of a mile N of the fence in the SW 1/4
State:
South Dakota
County:
SD113—Oglala Lakota
MLRA:
60A—Pierre Shale Plains
Non-MLRA Soil Survey Area:
SD113—Shannon County, South Dakota
PEDON
Current Taxonomic Class:
Very-fine, smectitic, mesic Typic Torrerts
Current Taxon Kind:
series
Pedon Record Orgin:
Converted from PDP 3.x
Pedon #:
4
Correlated Information:
Soil Name -
Twotop
Classificaton Date -
7/23/2007
Moisture Class -
aridic (torric)
Sampled As Information:
Soil Name -
Orman
Classificaton Date -
8/1/1958
Dynamic Soil Properties:
Erosion Class -
0
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Landform:
terrace
Slope Shape Down:
linear
Drainage Class:
moderately well
Surface Fragments:
0.00 percent
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
8/1/1958 (actual site observation date)
Surface Cover Properties:
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
PASM
Pascopyrum smithii
western wheatgrass
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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
1
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A1c—0 to 5 centimeters (0.0 to 2.0 inches); gray (2.5Y 5/1) and gray (2.5Y 5/1) crushed, very dark gray (2.5Y 3/1) and very dark gray (2.5Y 3/1) crushed, moist; silty clay loam; weak very fine platy parts to moderate very fine and fine subangular blocky structure; soft, friable; fragments; noneffervescent; gradual smooth boundary. Lab sample # 40A19038. Friable to firm moist, slightly hard dry in lower portion; quartz predominantly finely divided bleached; minerals primarily quartz; temperature 83 degrees F.
ABcorA2c—5 to 18 centimeters (2.0 to 7.1 inches); gray (2.5Y 5/1), dark gray (2.5Y 4/1), moist; silty clay; weak medium prismatic parts to moderate and strong fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; clay films on all faces of peds and dark gray (2.5Y 4/1), moist, coats on faces of peds and gray (2.5Y 5/1), dry, coats on faces of peds; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19039. Structure or weak very coarse polygons; quartz predominantly finely divided bleached; minerals primarily quartz; temperature 80 degrees F.; continuous - phpvsfiid 185689; continuous - phpvsfiid 196090; continuous - phpvsfiid 196091; continuous - phpvsfiid 185689; continuous - phpvsfiid 196090; continuous - phpvsfiid 196091
B21c—18 to 33 centimeters (7.1 to 13.0 inches); gray (2.5Y 5/1), dark gray (2.5Y 4/1), moist; clay; weak and moderate coarse prismatic parts to moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; dark gray (2.5Y 4/1), moist, coats on faces of peds and gray (2.5Y 5/1), dry, coats on faces of peds and clay films on all faces of peds; fragments; slight effervescence; gradual smooth boundary. Lab sample # 40A19040. Structure of weak very coarse polygons; quartz predominantly finely divided bleached; minerals primarily quartz; temperature 77 degrees F.; continuous - phpvsfiid 185690; continuous - phpvsfiid 185691; continuous - phpvsfiid 185692; continuous - phpvsfiid 185690; continuous - phpvsfiid 185691; continuous - phpvsfiid 185692
B22c—33 to 46 centimeters (13.0 to 18.1 inches); gray (2.5Y 5/1), dark gray (2.5Y 4/1), moist; clay; moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; gray (2.5Y 5/1), dry, coats on faces of peds and clay films on all faces of peds; fragments; strong effervescence; gradual smooth boundary. Lab sample # 40A19041. Structure of weak very coarse polygons; quartz predominantly finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 77 degrees F.; continuous - phpvsfiid 185693; continuous - phpvsfiid 185694; continuous - phpvsfiid 185693; continuous - phpvsfiid 185694
B3c—46 to 64 centimeters (18.1 to 25.2 inches); gray (5Y 5/1), olive gray (5Y 5/2), moist; clay; moderate fine and medium subangular blocky structure; very hard, very firm; 0.5 fine pores; dark gray (5Y 4/1), moist, coats on faces of peds and clay films on all faces of peds and 10 percent faint iron stains on rock fragments; fragments; strong effervescence; clear smooth boundary. Lab sample # 40A19042. Structure of weak very coarse polygons; some quartz finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 77 degrees F.; continuous - phpvsfiid 185695; continuous - phpvsfiid 185696; continuous - phpvsfiid 185695; continuous - phpvsfiid 185696
B3cacs1—64 to 97 centimeters (25.2 to 38.2 inches); light olive gray (5Y 6/2), olive gray (5Y 5/2), moist; clay; weak and moderate fine and medium subangular blocky structure; very hard, very firm; clay films on all faces of peds and 10 percent faint iron stains on rock fragments; 1 percent fine lime masses and 1 percent fine salt masses and 1 percent fine gypsum crystals, unspecified; fragments; strong effervescence; clear smooth boundary. Lab sample # 40A19043. Very weak coarse polygon structure; some quartz finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 72 degrees F.; patchy - phpvsfiid 185698; patchy - phpvsfiid 185698
B3cacs2—97 to 112 centimeters (38.2 to 44.1 inches); gray (2.5Y 5/1), dark gray (2.5Y 4/1), moist; clay; 3 percent olive gray (5Y 5/2) medium distinct and 3 percent light olive gray (5Y 6/2) medium distinct mottles; weak fine and medium subangular blocky structure; very hard, very firm; clay films on all faces of peds and 10 percent faint iron stains on rock fragments; 1 percent fine lime masses and 3 percent fine gypsum crystals, unspecified; fragments; slight effervescence; clear smooth boundary. Lab sample # 40A19044. Some quartz finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 68 degrees F.; patchy - phpvsfiid 185700; patchy - phpvsfiid 185700
(C-Dr)ca—112 to 145 centimeters (44.1 to 57.1 inches); light brownish gray (2.5Y 6/2), light olive brown (2.5Y 5/3), moist; clay; massive; hard, very firm; clay films on all faces of peds and 10 percent faint iron stains on rock fragments and 21 percent clay films on rock fragments; 1 percent fine lime masses and 1 percent fine gypsum crystals, unspecified; fragments; slight effervescence. Lab sample # 40A19045. Partially weathered weak fine and medium bedded shale structure; some quartz finely divided bleached; minerals primarily quartz with some feldspar and iron-manganese concentrations; temperature 68 degrees F.; patchy - phpvsfiid 185702; patchy - phpvsfiid 185703; patchy - phpvsfiid 185702; patchy - phpvsfiid 185703