LOCATION JAROLA NMEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Typic Argialbolls
TYPICAL PEDON: Jarola silt loam--mountain grassland. (Colors are for dry soil unless otherwise stated.)
A--0 to 9 inches; grayish brown (10YR 5/2) silt loam, very dark brown (10YR 2/2) moist; weak medium subangular blocky structure; slightly hard, friable, sticky and plastic; many fine and very fine roots; slightly acid; abrupt smooth boundary. (7 to 13 inches thick)
E--9 to 11 inches; light gray (10YR 6/1) silt loam, very dark gray (10YR 3/1) moist; weak thin platy structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and very fine roots; neutral; abrupt smooth boundary. (2 to 6 inches thick)
Bt1--11 to 17 inches; dark gray (10YR 4/1) silty clay loam, very dark gray (10YR 3/1) moist; moderate medium prismatic structure parting to weak medium subangular blocky; very hard, very firm, very sticky and very plastic; many fine roots; many thick clay and organic coatings on faces of peds; neutral; clear smooth boundary. (5 to 15 inches thick)
Bt2--17 to 21 inches; gray (10YR 5/1) clay loam, dark gray (10YR 4/1) moist; weak medium subangular blocky structure; very hard, sticky and plastic; common moderately thick clay coatings on faces of peds; few fine roots; neutral; clear smooth boundary. (4 to 10 inches thick)
2C1--21 to 42 inches; grayish brown (10YR 5/2) gravelly sandy clay loam, dark grayish brown (10YR 4/2) moist; massive; hard, firm, sticky and plastic; few fine roots; 15 percent pebbles; neutral; gradual smooth boundary. (10 to 25 inches thick)
2C2--42 to 60 inches; grayish brown (2.5Y 5/2) very gravelly sandy loam, dark grayish brown (2.5Y 4/2) moist; single grain; loose, nonsticky and nonplastic; 40 percent pebbles; neutral.
TYPE LOCATION: Baca Location No. 1, Sandoval County, New Mexico; 100 feet east of main road to headquarters; about 250 feet south of the Jemez River. New Mexico State Plane Coordinates N. 1,764,150 feet and E. 429,150 feet.
RANGE IN CHARACTERISTICS:
Soil Temperature: 44 to 47 degrees F.
Soil Moisture: This soil has a water table at 15 to 36 inches March through June. The soil remains moist at least in some part of the soil moisture control section July through September.
Depth to base of argillic: 17 to 35 inches
Reaction: slightly acid to neutral
A horizon - Value: 4 or 5 dry, 2 or 3 moist Chroma: 1 or 2
E horizon - Value: 5 through 7 dry, 3 through 5 moist Chroma: 1 or 2
B horizon - Hue: 10YR or 2.5Y Chroma: 1 through 3 Texture: silty clay, loam or clay loam with less than 35 percent clay
C horizon - Hue: 10YR or 2.5Y Value: 5 through 7 dry, 4 through 6 moist Chroma: 1 through 4
COMPETING SERIES: There are no other series in this family at this time. Similar soils are the Galchutt, Molas and Tranquilar series. Galchutt and Molas soils have clay that is dominantly montmorillonitic. Tranquilar soil have more than 59 percent clay.
GEOGRAPHIC SETTING: Jarola series are on stream terraces and have gradients of 0 to 5 percent. They formed in alluvium derived from extrusive and pyroclastic volcanics, mainly rhyolite, tuff and pumice. Elevations are 8,000 to 8,800 feet. The climate is continental with mean annual precipitation of about 20 to 25 inches. Mean annual temperature is about 42 to 45 degrees F., and the frost-free season is about 70 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cajete, Jarmillo, Vastine and competing Tranquilar series. Cajete soils have more than 35 percent rock fragments. Jarmillo soils lack a Bt horizon. Vastine soils lack a Bt horizon.
DRAINAGE AND PERMEABILITY: Poorly drained; slow runoff; slow permeability in the argillic, rapid in the substratum. USE AND VEGETATION: Jarola soils are used mainly for grazing. The natural vegetation is bog bluegrass, pullup muhly, clover, and sedges.
DISTRIBUTION AND EXTENT: Northcentral New Mexico. Series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES PROPOSED: Sandoval County, New Mexico, 1979.
REMARKS: The classification of this soil is changed from fine, mixed, frigid Typic Argialbolls to fine-loamy, mixed, frigid Typic Argialbolls. The type location has not been changed.
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Lakewood MLRA office, without review of the soil series property data. The remainder of this document has not been updated.