LOCATION HALLANDALE FLEstablished Series
TAXONOMIC CLASS: Siliceous, hyperthermic Lithic Psammaquents
TYPICAL PEDON: Hallandale fine sand--range. (Colors are for moist soil.)
A--0 to 4 inches; black (10YR 2/1) fine sand; weak fine granular structure; loose; many medium and fine roots; strongly acid; clear smooth boundary. (2 to 7 inches thick)
E--4 to 10 inches; light brownish gray (10YR 6/2) fine sand; few faint very dark gray mottles and streaks along root channels; single grained; loose; few fine roots; cyclic thickness is 2 to 8 inches; medium acid; gradual wavy boundary. (0 to 8 inches thick)
Bw1--10 to 14 inches; brown (10YR 5/3) fine sand; few faint very dark grayish brown mottles; single grained; loose; many sand grains uncoated; some thinly or partly coated, few are well coated; cyclic thickness is 0 to 20 inches; medium acid; gradual wavy boundary. (0 to 20 inches thick)
Bw2--14 to 16 inches; yellowish brown (10YR 5/4) fine sand, and very pale brown (10YR 8/4) decomposed limestone fragments; common medium distinct grayish brown (10YR 5/2) and yellowish brown (10YR 5/6) mottles; single grained; loose; slight increase in clay content; common uncoated sand grains; discontinuous and cyclic thickness is 0 to 8 inches; neutral; abrupt irregular boundary. (0 to 8 inches thick)
2R--16 inches; hard, fractured limestone that can be excavated with power equipment.
TYPE LOCATION: Broward County, Florida. About 0.5 mile north of Stirling Road, 0.2 mile east of Hunter Lane, and Holatee junction, NE1/4NW1/4SW1/4, sec. 34, T. 40 S., R. 40 E.
RANGE IN CHARACTERISTICS: Solum thickness commonly ranges from 7 to 20 inches but fractures between limestone boulders and solution holes 50 inches or more deep containing discontinuous Bt horizons are common. In low flats, sloughs, and depressions the reaction ranges from strongly acid to neutral in the A horizon, and moderately acid to moderately alkaline in the other layers. In tidal areas the reaction ranges from mildly alkaline to moderately alkaline.
The A or Ap horizon has hue of 10YR, value of 2 to 6, and chroma of 1 or 2; or it is neutral with value of 2 to 6. Unrubbed, the colors are a mixture of black organic matter and light gray sand grains.
The E horizon, where present, has hue of 10YR, value of 4 to 7, and chroma of 1, or value of 5 or 6, and chroma of 2; or is neutral with value of 4 to 7. Texture of the A and E horizons is sand or fine sand.
The Bw1 horizon, where present, has hue of 10YR, value of 4 to 7, and chroma of 3 with or without mottles of gray, brown, or yellow. The Bw2 horizon, where present, has hue of 10YR, value of 4 to 6, and chroma of 4, or value of 5, and chroma of 6. Texture is sand or fine sand with a clay increase of less than 3 percent.
In some pedons a Cg horizon occurs between the A horizon and limestone. Where present, it has hue of 10YR, value of 4, and chroma of 1 or 2, value of 5 or 6, and chroma of 1 to 3, value of 7 or 8, and chroma of 1 to 4. Texture is dominantly fine sand or sand.
Fractures range from 4 to 12 or more inches wide. Solution holes range from about 4 inches to 3 feet in diameter and occur at 1 foot to 6 feet intervals. Thin, discontinuous sandy loam, fine sandy loam, or sandy clay loam Bt horizons occur in some pedons in fractures and solution pits.
Pedons in some areas are underlain with a limestone ledge 2 to 4 feet thick. Variable discontinuous layers of sand to sandy clay loam mixed with shells or shell fragments are beneath this layer.
COMPETING SERIES: There are no other series in the same family. Closely similar soils are the Boca, Margate, and Plantation series. All these soils have limestone between depths of 20 to 40 inches. In addition, Boca soils have a continuous argillic horizon. Margate soils have a thicker dark colored A horizon. Plantation soils have a histic epipedon.
GEOGRAPHIC SETTING: Hallandale soils are in broad flats, sloughs, tidal areas and in shallow depressions. Slopes are 0 to 2 percent. The soils formed in a thin bed of sandy marine sediments over a limestone boulder ledge. The climate is humid and warm. Average annual precipitation is about 50 to 60 inches and mean annual air temperature is about 70 to 74 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Boca, Margate, and Plantation series and the Basinger, Chobee, Dania, Jupiter, Pineda, Pompano, Sanibel, Riviera, and Winder series. Basinger soils do not have limestone within 20 inches and have a Bh horizon. Chobee, Dania, Jupiter, and Sanibel soils are on lower landscapes and are very poorly drained. Chobee soils have a mollic epipedon, a continuous argillic horizon and lack limestone. Dania soils are organic. Jupiter soils have a mollic epipedon. Pineda soils do not have limestone, have a continuous argillic horizon, and have subhorizons above the argillic horizon with chroma 4 colors or higher. Pompano and Sanibel soils lack limestone in addition, Sanibel soils have a histic epipedon. Riviera and Winder soils have continuous argillic horizons and lack limestone.
DRAINAGE AND PERMEABILITY: Poorly to very poorly drained; slow to ponded runoff; rapid permeability. In depressional areas the soil is covered by water up to 6 to 9 months each year. In other undrained areas the water table is within 12 inches of the surface for 4 to 5 months during most years, and within a depth of 12 to 20 inches most of the rest of the year. In drained areas, the water table fluctuates with the water level in canals and ditches through the solution holes in the limestone. It is below the soil most of the time in drained areas. Slough areas are covered with shallow slow moving water for about 7 days to one month. Tidal areas are flooded with tide water almost daily.
USE AND VEGETATION: In their native state, most of these soils are used for range land and tame pasture. Native vegetation consists of pineland threeawn, paspalum spp., bluejoint panicum, blue maidencane, bluestem, scattered cypress, saw palmettos, and slash pine. In tidal areas the vegetation includes seashore saltgrass, needlegrass rush, Jamaica sawgrass, smooth cordgrass and saltwort.
DISTRIBUTION AND EXTENT: Southern areas of Peninsular Florida. The series is of moderate extent.
MLRA OFFICE RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Broward County, Florida; 1973.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to a depth of 10 inches. (A, E horizons)
Albic horizon - the zone from 4 to 10 inches. (E horizon)
ADDITIONAL DATA: Soil Characterization Laboratory, IFAS, University of Florida samples 3130-3134, 2791-2798, 1137-1138,1796-1798, 56-3-(1-5), 3645-3647.