Texas Almanac, 1947-1948 Page: 185

                                
SOTT, RESOUIRCRE.
Soil Belt Map of Texas

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EDWARDS PLATEAU SOILS
RD:I Denton Rough Stony Land. Dark and
brown friable, calcareous with limestone sub-
stratum. Range lands.
RV: Valera-Rough Stony Land. Brown to black,
calcareous, friable with substratum of caliche or
limestone.

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S  ,,4!       RE: Ector-Rough Stony Land.
,  I  .      Light brown, calcareous, stony
soils. Largely range lands.
A: Alluvials. Gray   calcareous,
S     usually friable.
NORTH CENTRAL PLAINS SOILS
AR: Abilene-Roscoe-Foard   Group. Brown to
dark brown, noncalcareous soils, usually friable;
calcareous base.
VR: Vernon-Rough Broken Land. Red and red-
dish brown calcareous soils, usually friable. Per-
mian red bed substratum.
MV: Miles-Vernon Group. Reddish brown, fri-
able soils, usually noncalcareous over red bed or
sandy clay substratum.
HIGH PLAINS SOILS
PR: Pullman-Richfield Group. Dark brown to
black, noncalcarmous, friable soils over accumu-
lated layer of calcium carbonate or calcareous clay.
ASL: Amarillo Sandy Loam. Red, brown and
reddish  brown, noncal(areous, friable soil, on
calcium carbonate substratum.
AS: Amarillo Sands Group. Light colored sands,
usually deep. Usually range lands.
E: Enterprise or Dunesands. Light brown and
gray loose sand, usually drifted into dunes.
TRANS-PECOS BASIN AND MOUNTAIN SOILS
RB: Rough Stony Land-Brewster. Soils of the
mountain regions, noncalcareous and friable over
substratum of bedrock.
R: Reeves-Verhalen Group. Brown and reddish
brown, calcareous, friable soils. Natural range
forage except where water available for irrigation.
A: Alluvial Soils. Light brown and brown cal-
careous, frifable soils, largely in valley of Rio
Grande below El Paso.