LOCATION TRAVILAH MDEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Aquic Hapludalfs
TYPICAL PEDON: Travilah silt loam on a 2 percent slope in a mixed hardwood brush area. (Colors are for moist soil.)
Ap--0 to 5 inches; dark grayish brown (10YR 4/2) silt loam; moderate medium granular structure; friable; slightly plastic - slightly sticky; many fine and medium roots; 5 percent channers; slightly acid; abrupt smooth boundary.
E--5 to 10 inches; light yellowish brown (2.5Y 6/4) silt loam; moderate medium subangular blocky structure; friable; slightly plastic - slightly sticky; few fine and medium roots; 5 percent channers; slightly acid; clear wavy boundary.
Bt1--10 to 15 inches; yellowish brown (10YR 5/4) silty clay loam with common medium distinct light brownish gray (10YR 6/2) mottles; moderate medium subangular blocky structure; friable; plastic - sticky; few fine roots; common fine tubular pores; 10 percent channers; thick clay films on ped faces and lining pores; slightly acid; clear wavy boundary.
Bt2--15 to 24 inches; dark yellowish brown (10YR 4/4) silt loam with common medium distinct light brownish gray (10YR 6/2 mottles; moderate medium subangular blocky structure; friable; slightly sticky - slightly plastic; few fine roots; many fine ferromagnesian concretions; common fine tubular pores; 10 percent channers; thick clay films on ped faces and lining pores; slightly acid; clear wavy boundary.
BC--24 to 33 inches; yellowish brown (10YR 5/6) and dark yellowish brown (10YR 4/4) channery silty clay loam; moderate medium angular blocky parting to moderate medium and fine subangular blocky structure; friable; sticky - plastic; many fine ferromagnesian concretions; 15 percent channers; slightly acid; abrupt wavy boundary.
R--33 inches; hard serpentine bedrock.
TYPE LOCATION: Montgomery County, Maryland: in Hunting Hill; about 2500 feet south on Travilah Road from the intersection with Md. Rt. 28, 110 feet west of Travilah Road in brush area. (N 39o5'30" W 77o12'25")
RANGE IN CHARACTERISTICS: Solum thickness ranges from 21 to 39 inches. Depth to bedrock ranges from 20 to 40 inches. Partially weathered serpentine channers range from 0 to 10 percent in the A horizon and up to 30 percent in the B and C horizons. Few boulders are present in some pedons. Reaction is medium acid to mildly alkaline in the lower B and C horizons.
The Ap horizon has hue of 2.5Y through 7.5YR, value of 4 or 5, and chroma of 2 through 4. Thin A1 horizons, where present, have value of 2 or 3 and chroma of 0 to 2. They are silt loam or loam in the fine- earth fraction.
The E horizon, where present, has hue of 2.5Y through 7.5YR, value of 4 through 6 and chroma of 3 through 6. It is silt loam or loam in the fine-earth fraction.
The B horizons have hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 through 6. Some pedons have hue of 2.5Y in the lower B horizon. The B horizons are silt loam or silty clay loam in the fine-earth fraction.
The C horizon, where present, is commonly multicolored in shades of brown, yellow, green, and black. Texture is silty clay loam, silt loam, or loam in the fine-earth fraction.
COMPETING SERIES: These are the Blair, Fishhook, Freeburg, Glenford, Lykens, Muren, Sardinia, Stoy, Henshaw, Ingersoll, Keene, and Xenia. All of these series are formed in materials other than serpentine.
GEOGRAPHIC SETTING: Travilah soils are on the northern portions of the Piedmont Plateau uplands, commonly associated with diabase and/or schist. These soils are on broad convex ridges; slopes range from 0 to 15 percent. They have developed in residuum weathered from serpentine. Mean annual precipitation ranges from 36 to 44 inches and mean annual temperature ranges from 51 to 57 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the well drained Chrome, Legore, Montalto, Neshaminy, and Talleyville soils, the moderately well drained to somewhat poorly drained Conowingo, Kelly, and Mount Lucas soils, and the poorly drained Calvert and Watchung soils.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained; slow permeability; seasonally perched water table above bedrock.
USE AND VEGETATION: Most areas are recessional forest brush and residential developments. Native vegetation is black oak, red oak, white oak, and Virginia pine.
DISTRIBUTION AND EXTENT: Maryland and Virginia. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Montgomery County, Maryland; 1989.
REMARKS: This soil has previously been mapped as the Aldino series.
Diagnostic horizons and features recognized in this pedon are:
a. Ochric epipedon - the zone from the surface to 10 inches (Ap and E horizons).
b. Aquic feature - mottles at a depth of about 40 inches that have chroma of 2 or less.
c. Argillic horizon - the zone from 10 to 24 inches (Bt1 and Bt2 horizons).
d. Lithic contact - at 33 inches (R horizon).
Additional Data: Laboratory data are not available at this time.