IDENTIFIERS
Current Taxon Name (Soil Name):
DIABLO
OSD
Series Extent
User Site ID:
S1958CA001002
User Pedon ID:
S1958CA001002
Vegetation Plot ID:
S1958CA001002
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
SSL
Lab Pedon # -
40A3095
NCSS Pedon Lab Data NASIS Record ID -
38224
Print Date:
11/11/2024
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:
37.7491684
Std. Longitude:
-121.8177795
Datum:
WGS84
Township:
2S
Range:
1E
Section:
24
PLSS Details:
1300 feet east and 1150 feet south of NW corner
Location Description:
Beck Ranch.
State:
California
County:
CA001—Alameda
MLRA:
15—Central California Coast Range
Non-MLRA Soil Survey Area:
CA609—Alameda Area, California
PEDON
Describers Name:
R. Ulrich
Current Taxonomic Class:
Fine, smectitic, thermic Aridic Haploxererts
Pedon Purpose:
full pedon description
Pedon Record Orgin:
Converted from PDP 3.x
Pedon #:
2
Correlated Information:
Soil Name -
DIABLO
PSC -
25 to 100 cm.
Classificaton Date -
7/16/2007
Moisture Class -
xeric
Sampled As Information:
Soil Name -
Diablo
Classificaton Date -
11/11/1958
Dynamic Soil Properties:
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Slope Shape Down:
linear
Runoff:
medium
Drainage Class:
well
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
11/11/1958 (actual site observation date)
Surface Cover Properties:
Site Obs. Cover Kind 1 -
grass/herbaceous cover
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
MEPO3
RUMEX
Medicago polymorpha
Rumex
burclover
dock
—
—
—
—
—
—
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
35
—
—
259
—
0
368
—
—
—
—
—
15.6
—
—
—
—
—
—
—
A11—0 to 18 centimeters (0.0 to 7.1 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; clay; strong coarse prismatic, and strong medium and coarse subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 21.0 fine roots throughout; 1.0 very fine and fine tubular pores; fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24202
A12—18 to 43 centimeters (7.1 to 16.9 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; silty clay; moderate coarse prismatic, and moderate medium and coarse subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 1.0 fine roots throughout; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); fine carbonate nodules; fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24203. noncalcareous but a fine hard lime nodule or a slightly calcareous shale fragment may be included in sampled material
A13CA—43 to 71 centimeters (16.9 to 28.0 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; silty clay; moderate coarse prismatic, and moderate coarse subangular blocky structure; very hard, very firm, moderately sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); 1 percent fine weakly coherent cemented pinkish white (7.5YR 8/2) carbonate nodules; fragments; slight effervescence; clear wavy boundary. Lab sample # 40A24204. slightly calcareous with a few fine hardened whitish lime nodules and some mycelial lime films in lower part
C1CA—71 to 94 centimeters (28.0 to 37.0 inches); greenish gray (5GY 6/1), greenish gray (5GY 5/1), moist; silty clay loam; weak medium subangular blocky structure; hard when dry, firm, slightly sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); 1 percent fine pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; clear wavy boundary. Lab sample # 40A24205. moderately calcareous with abundant whitish mycelial lime films on ped surfaces and few fine whitish hardened lime nodules
C2CA—94 to 122 centimeters (37.0 to 48.0 inches); olive gray (5Y 5/2) and greenish gray (5GY 6/1), olive gray (5Y 4/2) and greenish gray (5GY 5/1), moist; silty clay loam; weak fine subangular blocky structure; hard when dry, firm, moderately sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; fragments; strong effervescence; abrupt smooth boundary. Lab sample # 40A24206. including both segregated and disseminated lime, numerous small shale fragments
R—122 to 150 centimeters (48.0 to 59.1 inches); greenish gray (5GY 6/1), greenish gray (5GY 5/1), moist; fragments. Lab sample # 40A24207. shattered fine grained sandstone to coarse grained shale with whitish lime films on fracture facings; parent rock fragments react weakly to dilute acid, with strong reaction being obtained from the whitish lime films