LOCATION NOTSPIER CA
Established Series
DCE/RLR
04/2019
NOTSPIER SERIES
The Notspier series consists of moderately deep, well drained soils that formed in fine alluvium derived from mixed rock sources resting on weakly consolidated sands. Notspier soils are on hills and terraces and have slopes of 2 to 50 percent. The mean annual precipitation is about 235 millimeters (9 inches) and the mean annual temperature is about 17 degrees C. (62.5 degrees F.)
TAXONOMIC CLASS: Fine, smectitic, isothermic Sodic Haplusterts
TYPICAL PEDON: Notspier silt loam - on a 2 percent slope facing southeast under a cover of slender oats, Australian saltbush soft chess, cholla and prickly pear cactus at an elevation of 550 feet. (Colors are for dry soil unless otherwise stated. When described on 5/19/82 the soil was dry to 4 inches and moist below.
E--0 to 5 centimeters (0 to 2 inches); light brownish gray (10YR 6/2) silt loam, very dark grayish brown (10YR 3/2) moist; moderate coarse subangular blocky structure; hard, friable, moderately sticky and moderately plastic; many very fine roots; many very fine tubular pores; neutral (pH 7.0); abrupt wavy boundary. (0 to 8 centimeters; 0 to 3 inches thick).
An--5 to 23 centimeters (2 to 9 inches); dark grayish brown (10YR 4/2) clay, very dark grayish brown (10YR 3/2) moist; moderate very coarse prismatic and strong coarse and very coarse angular blocky structure; extremely hard, friable, very sticky and very plastic; many very fine roots on faces of peds; many very fine tubular pores; SAR is 18; neutral (pH 7.0); clear wavy boundary (12 to 25 centimeters; 5 to 10 inches thick).
Bnss1--23 to 43 centimeters (9 to 17 inches); dark grayish brown (10YR 4/2) clay, very dark grayish brown (10YR 3/2), moist; strong very coarse prismatic; extremely hard, friable, very sticky and very plastic; common very fine roots on faces of prisms and ped faces; common very fine tubular pores; few intersecting slickensides and wedge shape aggregates; slightly acid (pH 6.5); abrupt smooth boundary. (20 to 30 centimeters; 8 to 12 inches thick).
Bnss2--43 to 69 centimeters (17 to 27 inches); dark grayish brown (10YR 4/2) clay, very dark grayish brown (10YR 3/2), moist; strong very coarse prismatic and moderate coarse angular blocky structure; extremely hard, friable, very sticky and very plastic; common very fine roots on faces of prisms and ped faces; common very fine tubular pores; few intersecting slickensides and wedge shape aggregates; SAR is 34 and EC is 11; slightly acid (pH 6.5); abrupt smooth boundary. (20 to 38 centimeters; 8 to 15 inches thick)
2Cr--69 to 102 centimeters (27 to 40 inches); light yellowish-brown soft semi-consolidated sand that can be dug with a shovel and that crushes to coarse sand and has lenses of sandy loam.
TYPE LOCATION: San Clemente Island, Los Angeles County, California, about 2 miles west southwest from main road and old airport towards the magazine area to a Y, then 300 feet west and 300 feet north to site.; 32.94317 degrees latitude, -118.54047 degrees longitude; UTM Zone 11; 3646039.75n, 355996.38e; U.S.G.S. Quad Name: San Clemente Island Central, California.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature: is about 18 degrees C (64 degrees F.).
Soil moisture and cracks: When dry, the soil forms large cracks about 1 to 5 cm wide, 10 to 25 cm apart between depths of 5 to 70 cm that close from about December until late March or early April and remain open the rest of the year.
Depth to paralithic contact: 50 to 100 centimeters (20 to 40 inches).
E horizon (where it occurs)
Texture: silt loam or loam
Rock fragment content: 5 to 20 percent cobbles and 5 to 10 percent gravels.
A horizon
Color: 10YR 4/2, 5/2, 5/3, 6/2, 6/3, 7.5YR 3/2 or 3/4
Texture: clay or cobbly clay
Clay content: 40 to 60 percent
Exchangeable sodium percentage: 20 to 34 percent
Sodium absorption ratio: 13 to 25 meq/L
Electrical conductivity: 0 to 4 ds/m
Reaction: neutral to moderately alkaline
B horizons
Color: 10YR 4/2, 5/2, 5/3, 7.5YR 3/2 or 3/4
Texture: clay
Clay content: 40 to 60 percent
Slickensides: few weak intersecting slickensides at 23 to 70 cm (9 to 27 inches).
Exchangeable sodium percentage: 15 to 35 percent
Sodium absorption ratio: 13 to 35 meq/L
Electrical conductivity: 4 to 16 ds/m
Calcium carbonates: some pedons are slightly calcareous with few to common masses of calcium carbonate; or have finely disseminated calcium carbonate.
Reaction: slightly acid or neutral.
COMPETING SERIES:
Jehemy soils: do not have a paralithic contact and are on marine terraces.
GEOGRAPHIC SETTING:
Landscape: islands
Landform: hills and terraces
Slopes: 2 to 50 percent.
Parent material: alluvium derived from mixed rock sources.
Elevation is nearly sea level to 350 meters (0 to 1150 feet).
Climate: maritime with mild dry foggy summers and mild clear moist winters.
Mean annual precipitation: 215 to 240 millimeters (8.5 to 9.5 inches).
Mean annual temperature is about 16.5 to 17.5 degrees C. (62 to 63.5 degrees F.).
Frost-free season: 360 to 365 days.
GEOGRAPHICALLY ASSOCIATED SOILS:
Eelcove soils: have a natric horizons and are on marine terraces.
Eelpoint soils: have a lithic bedrock contact, a thermic soil temperature regime and are on similar landforms.
Lostpoint soils: have a thermic soil temperature regime, is deep to a paralithic contact and are on similar landforms.
Sanclemente soils: have a lithic contact and are on similar landforms.
Westhore soils: have a clayey-skeletal particle size class and are on marine terraces.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained, medium or rapid runoff when cracks are closed, low saturated hydraulic conductivity.
USE AND VEGETATION: Used mainly for military maneuvers and to a minor extent for wildlife habitat. The vegetation consists of slender oats, Australian saltbush, soft chess, cholla, and prickly pear.
DISTRIBUTION AND EXTENT: Channel Islands Soil Survey Area, San Clemente Island; Southern California Mountains, MLRA 20. These soils are not extensive.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: San Clemente Island, Los Angeles County, California, 1982. Series name is for Nots Pier.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: the zone from a depth of 0 to 5 centimeters
Slickensides: the zone from a depth of 23 to 69 centimeters
Paralithic contact: at a depth of 69 centimeters
Paralithic materials: the zone from a depth of 69 to 102 centimeters
OSD revised during correlation of the San Clemente Island Interim Report in 2018.
ADDITIONAL DATA:
NASIS User Site/Pedon ID: 1982 CA037NOTSPIER
Classified using the Twelfth Edition Keys to Soil Taxonomy (2014)
National Cooperative Soil Survey
U.S.A.