*** Taxonomy Characterization Data ***

Pedon ID: S2018TX125001

( Dickens, Texas )

Print Date: Dec 6 2025 3:45AM

Sampled as on Aug 14, 2018:	Cottonwood ; Loamy, mixed, superactive, calcareous, thermic Lithic Ustorthent
Revised to :

				United States Department of Agriculture
SSL	-	Project	C2018USTX107   MLRA 78B Quinlan Cottonwood Rock outcrop complex	Natural Resources Conservation Service
	-	Site ID	S2018TX125001   Lat: 33° 33' 18.67" north  Long: 100° 35' 26.13" west  MLRA: 78B	National Soil Survey Center
	-	Pedon No.	18N2874	Kellogg Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

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Taxonomy Tier 1

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

Fine

CaCO3

1500

.1-75

Bulk

Cole

Vol

Resist

Clay

Clay

Clay

kPa

Clay

mm

Den

Whole

% of

Min

Depth

<.002

<.0002

<.002

/Clay

Est

Frac

33 kPa

Soil

Whole

%

Layer

(cm)

Horz

Prep

(---------% of <2 mm-------)

(-------- % --------)

g cm-3

cm cm-1

3A1a1a

3A1a1a

DbWR1

18N06838

0-20

A

S

24.0

4.3

0.23

8.4

20

1.16

0.025

1

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Taxonomy Tier 2

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

pH

pH

Org

Tot

Al+½ Fe

CO3 as

(--- Base Sat ---)

NZ

ECEC

CEC7

ECEC

Al

Depth

H2O

NaF

C

C

Oxal

ODOE

CaCO3

NH4

Bases

P Ret

cmol(+)

/Clay

/Clay

Sat

E C

ESP

Layer

(cm)

Horz

Prep

(------------------------------------------ % --------------------------------------------)

kg -1

%

dS m-1

%

4C1a2a

4H2a

4E1a1a1a1

4F2

18N06838

0-20

A

S

8.1

5.21

25

100*

1.06

0.91

--

^*Extractable Ca may contain Ca from calcium carbonate or gypsum.

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Pedon Calculations
Calculation Name	Result	Units of Measure
Weighted Particles, 0.1-75mm, 75 mm Base	control depth 25 beyond last horizon depth 20	% wt
Volume, >2mm, Weighted Average	control depth 25 beyond last horizon depth 20	% vol
Clay, total, set 2, Weighted Average	control depth 25 beyond last horizon depth 20	% wt
Clay, carbonate free, set 2, Weighted Average	control depth 25 beyond last horizon depth 20	% wt
CEC Activity, CEC7/Clay, Weighted Average, CECd, Set 7	control depth 25 beyond last horizon depth 20	(NA)
Weighted averages based on control section: 0-25 cm