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Luckenbach soil and landscape

Soil profile: Luckenbach clay loam in an area of Luckenbach clay loam, 0 to 5 percent slopes. The topsoil is clay loam. The subsoil starts at about 15 inches (38 cm). Secondary carbonates occur at a depth of about 39 inches (99 cm).(Soil Survey of Mason County, Texas; by Julia A. McCormick, Natural Resources Conservation Service)

 

Landscape: On the surface, native Indiangrass grows on an area of Luckenbach clay loam, 0 to 5 percent slopes. These soils occur on footslopes of alluvial plain remnants associated with the Hensell Sand formation. Luckenbach soils are in the Clay Loam ecological site.

 

The Luckenbach series consists of very deep, well drained, moderately slowly permeable soils that formed in ancient loamy or clayey alluvium. These nearly level and gently sloping soils are on alluvial plain remnants or stream terraces and along narrow valleys on dissected plateaus. Slope ranges from 0 to 5 percent. Mean annual precipitation is about 660 ,mm (26 in) and mean annual temperature is about 18 degrees C (65 degrees F).

 

TAXONOMIC CLASS: Fine, mixed, superactive, thermic Typic Argiustolls

 

Soil moisture: Typic ustic moisture regime

Solum thickness: 150 to 200 cm (60 to 80 in)

Mollic epipedon: 30 to 50 cm (12 to 20 in)

Depth to identifiable secondary carbonates: 46 to 71 cm (18 to 28 in)

Particle-size control section (weighted average):

Clay content: 35 to 55 percent

Fragments: 0 to 15 percent by volume

 

Soil moisture: Typic ustic moisture regime

Solum thickness: 150 to 200 cm (60 to 80 in)

Mollic epipedon: 30 to 50 cm (12 to 20 in)

Depth to identifiable secondary carbonates: 46 to 71 cm (18 to 28 in)

Particle-size control section (weighted average):

Clay content: 35 to 55 percent

Fragments: 0 to 15 percent by volume

 

 

Luckenbach soils were formerly in the Pedernales series which does not have a mollic epipedon. This soil was changed from a Typic Argiustoll to Udic Argiustoll in August 1989 because of change in Soil Taxonomy. However, most of the acreage and the typical pedon are located in the Typic Ustic moisture regime. Other areas are mainly on the Udic/Ustic and Typic/Ustic line. Therefore, we are classifying this soil in the Typic subgroup in 1990. NSSL lab data near the series type location in Gillespie County, Texas identified high shrink swell and slickensides suggesting a vertic subgroup. Classification was not changed pending a study over the entire series extent.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/masonTX2...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/L/LUCKENBACH.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#luckenbach

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Uploaded on March 4, 2011
Taken in January 2005