LOCATION MARINA CA
Established Series
Rev. TCM/JBB
08/2024
MARINA SERIES
The Marina series consists of very deep, somewhat excessively drained soils formed in old eolian deposits. Marina soils are on fluviomarine terraces, marine terraces, and coastal plains and have slopes of 0 to 30 percent. The mean annual precipitation is about 400 mm and the mean annual air temperature is about 17 degrees C.
TAXONOMIC CLASS: Mixed, thermic Lamellic Xeropsamments
TYPICAL PEDON: Marina soils in an area of Marina loamy sand on a slope of 5 percent facing south at an elevation of 165 meters under a cover of annual grasses, formerly cultivated. (Colors are for dry soil unless otherwise noted.)
Ap1--0 to 18 cm; grayish brown (10YR 5/2) light loamy sand, brown (10YR 4/3) moist; weak fine and medium granular structure; soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine interstitial and few fine tubular pores; slightly acid (pH 6.5); abrupt smooth boundary. (0 to 20 cm thick)
Ap2--18 to 30 cm; grayish brown (10YR 5/2) light loamy sand, brown (10YR 4/3) moist; massive; hard, friable, nonsticky, nonplastic; common very fine and few fine roots; many very fine interstitial and common fine and few medium tubular pores; moderately acid (pH 6.0); clear wavy boundary. (0 to 20 cm thick)
A--30 to 68 cm; brown (7.5YR 5/4) light loamy sand, brown (7.5YR 4/4) moist; single grained; soft, very friable, nonsticky, nonplastic; few very fine and few fine roots; many very fine interstitial and many fine tubular pores; moderately acid (pH 6.0); clear wavy boundary. (30 to 75 cm thick)
E and Bt1--68 to 83 cm; light brown (7.5YR 6/4) loamy sand, reddish brown (5YR 4/4) moist; massive; slightly hard, friable, nonsticky, nonplastic; few very fine and fine roots; common very fine interstitial and few fine and medium tubular pores; several thin 1/4 inch thick discontinuous lamellae, dark reddish brown (5YR 3/2, 3/3) moist, lamellae are hard when dry and have thick clay bridges; very weak clay bridges in matrix; moderately acid (pH 6.0); gradual wavy boundary. (10 to 20 cm thick)
E and Bt2--83 to 125 cm; light brown (7.5YR 6/4) light loamy sand, reddish brown (5YR 5/4) moist; massive; slightly hard, very friable, nonsticky, nonplastic; few very fine and fine roots; many very fine interstitial and few very fine tubular pores; 3 continuous distinct lamellae, top, bottom and middle, 1/4 to 3/4 inch thick, hard and friable, reddish brown (5YR 4/4) dry; thick clay bridges in lamellae, very weak bridges in matrix; strongly acid (pH 5.5); gradual wavy boundary. (18 to 50 cm thick)
E and Bt3--125 to 150 cm; light brown (7.5YR 6/4) sand, strong brown (7.5YR 5/6) moist; massive; soft, loose; few very fine roots; many very fine interstitial pores; several brown (7.5YR 4/3) dry lamellae 1/4 to 3/4 inch thick, bands hard and friable; moderate clay bridges in lamellae; moderately acid (pH 6.0); gradual wavy boundary. (15 to 38 cm thick)
E and Bt4--150 to 220 cm; pink (7.5YR 7/4) sand, reddish yellow (7.5YR 6/6) moist; single grained; soft, loose; many very fine interstitial pores; weak continuous lamellae 1 to 1.5 inches thick about 3 inches apart; thin clay bridges in lamellae; moderately acid (pH 6.0).
TYPE LOCATION: Santa Barbara County, California; about 7 miles southeast of Santa Maria, California. USGS 7.5 minute topographic quadrangle: Orcutt, California. WSGS84 34.871417 latitude and -120.398139 longitude; UTM Zone 10, 3861872.43 meters N and 737823.46 meters E NAD83.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature: Thermic temperature regime. Mean annual soil temperature at 50 cm is 17 degrees C, and the difference between mean summer and mean winter soil temperature is greater than 6 degrees C.
Soil moisture: Xeric moisture regime. Usually dry in all parts from late April or early May until late November or early December, and usually moist in some or all parts the rest of the year.
Particle size control section:
Rock fragments: none
Clay content: 1 to 6 percent
Reaction: very strongly acid to moderately alkaline throughout
A horizon:
Hue: 7.5YR, 10YR
Value: 4 to 6 dry, 2 to 4 moist
Chroma: 2 to 4 dry, 2 to 4 moist
Texture: fine sand, sand, loamy sand
Clay content: 1 to 6 percent
Organic matter content: less than one percent
E and Bt horizons:
Hue: 10YR, 7.5YR, 5YR
Value: 5 to 7 dry, 3 to 6 moist
Chroma: 4 to 6 dry, 3 to 6 moist
Texture: fine sand, sand, loamy sand
Clay content: 2 to 8 percent
COMPETING SERIES:
Oceano soils: have thinner lamellae and exist on similar landforms
GEOGRAPHIC SETTING:
Landscape: coastal plains, alluvial plains, and marine terraces
Landform: dissected terraces and stabilized and relict sand dunes
Parent material: old eolian deposits
Slope: 0 to 30 percent
Elevation: 5 to 200 meters
Mean annual precipitation: 370 to 420 millimeters
Mean January temperature: 12 degrees C
Mean July temperature: 19 degrees C
Mean annual air temperature : 14 to 18 degrees C
Frost-free season: 300 to 355 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Baywood soils: have a mollic epipedon and exist on similar landforms
Carlsbad soils: have iron silica concretions, a weakly cemented duripan, and are found in linear positions on marine terraces
Chesterton soils: are moderately well drained, have an argillic horizon, iron silica concretions, a strongly cemented duripan and are found in linear positions on marine terraces
Corralitos soils: do not have lamellae or clay bridging and are found in linear positions on alluvial fans and floodplains
Narlon soils: have an abrupt clay increase in the subsurface, are moderately well drained, and are found in concave positions on marine terraces with an eolian cap over clayey marine deposits
Tangair soils: do not have lamellae or clay bridging and are found in linear positions on marine terraces closest to the ocean
Oceano soils: have thinner lamellae starting at a greater depth and exist on similar landforms closer to the ocean
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; moderate to rapid hydraulic conductivity.
USE AND VEGETATION: Used mostly for range. Some areas used for irrigated alfalfa and special crops. Vegetation is chamise, flattop buckwheat, black sagebrush, small live oak trees, annual grasses, and forbs.
DISTRIBUTION AND EXTENT: Central California Coast Ranges, MLRA 15. This soil is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Monterey County (Salinas Area), California, 1925.
REMARKS: The Marina soils were formerly classified as Regosols. The classification was updated in February 2001 using the Eighth Edition to Soil Taxonomy. This series was formerly classified as mixed, thermic, Alfic Xeropsamments. Competing series were not checked at that time.
Diagnostic horizons and features recognized in this pedon include:
Ochric epipedon: the zone from 0 to 68 cm
Lamellae: the zone from 68 to 220 cm
OSED scanned by SSQA. Last major revision by state on 9/73.
ADDITIONAL DATA:
NSSL pedon S76CA-073-001 (range in characteristics).
NASIS User Pedon ID: 08CA672001
National Cooperative Soil Survey
U.S.A.