*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled as on May 11, 1981:	Torreon ; Fine, montmorillonitic, mesic Aridic Argiustoll
Revised to correlated:	Torreon ; Fine, smectitic, mesic Calcidic Argiustolls

				United States Department of Agriculture
SSL	-	Project	CP87CO265   COLORADO AND LAS ANIMAS COUNTY	Natural Resources Conservation Service
	-	Site ID	81CO628002   Lat: 37° 5' 58.20" north  Long: 103° 34' 21.10" west  MLRA: 70	National Soil Survey Center
	-	Pedon No.	87P0833	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

---

Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
87P04595	A	A	0-13				SIL	SICL
87P04596	Bt1	Bt1	13-20					SIC
87P04597	Bt2	Bt2	20-34				SICL	SIC
87P04598	Bt3	Bt3	34-48				SIC	SIC
87P04599	Btk	Btk	48-65				SICL	SICL
87P04600	Bk1	BCk	65-96				SICL	CL
87P04601	Bk2	Ck1	96-135				CL	CL
87P04602	Bk3	Ck2	135-152				SIL	CL
87P04603			135-152		BASALT

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.72	(NA)
Clay, carbonate free, Weighted Average	42	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	16	% wt
Volume, >2mm, Weighted Average	7	% vol
Clay, total, Weighted Average	44	% wt
LE, Whole Soil, Summed to 1m	0	cm/m
Weighted averages based on control section: 13-63 cm

*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled As	:	Torreon		Fine, montmorillonitic, mesic Aridic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  87P0833

---

PSDA  &  Rock Fragments				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
					(- - - - - Total - - - - - -)			(- - Clay - - -)		(- - - - Silt - - - - -)		(- - - - - - - - - - - - Sand - - - - - - - - - - - -)					( Rock Fragments   (mm) )
				Lab	Clay	Silt	Sand	Fine	CO3	Fine	Coarse	VF	F	M	C	VC	(- - - - - - - - Weight - - - - - - - -)				>2 mm
				Text-	<	.002	.05	<	<	.002	.02	.05	.10	.25	.5	1	2	5	20	.1-	wt %
	Depth			ure	.002	-.05	-2	.0002	.002	-.02	-.05	-.10	-.25	-.50	-1	-2	-5	-20	-75	75	whole
Layer	(cm)	Horz	Prep		(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)												(- - - - - - - % of <75mm - - - - - -)				soil
				3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3B1	3B1	3B1
87P04595	0-13	A	S	sicl	27.3	63.7	9.0	14.1		30.1	33.6	7.1	0.8	0.4	0.3	0.4	1	2	1	6	4
87P04596	13-20	Bt1	S	sic	44.4	49.6	6.0	31.2		25.1	24.5	4.8	0.5	0.2	0.2	0.3	tr	1	--	2	1
87P04597	20-34	Bt2	S	sic	48.9	45.7	5.4	28.1		24.3	21.4	4.1	0.5	0.3	0.3	0.2	tr	tr	10	11	10
87P04598	34-48	Bt3	S	sic	45.0	47.4	7.6	19.1	2.1	26.2	21.2	5.3	0.8	0.6	0.5	0.4	1	1	10	14	12
87P04599	48-65	Btk	S	sicl	39.1	49.8	11.1	14.0	7.0	27.6	22.2	4.9	1.3	1.3	1.5	2.1	5	2	16	29	23
87P04600	65-96	Bk1	S	cl	34.1	43.8	22.1	10.7	9.8	23.6	20.2	6.7	2.7	2.8	3.6	6.3	8	10	17	45	35
87P04601	96-135	Bk2	S	cl	33.6	41.3	25.1	11.2	7.2	21.4	19.9	8.0	3.6	3.4	4.3	5.8	7	14	19	50	42
87P04602	135-152	Bk3	S	cl	33.2	43.5	23.3	11.7	7.5	22.3	21.2	8.6	3.9	3.6	3.2	4.0	6	9	32	55	61
87P04603	135-152		S														--	--	--

---

Bulk Density  &  Moisture				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(Bulk Density)		Cole	(- - - - - - - - - - - Water Content - - - - - - - - - - -)					( Air Dry-Oven Dry )		WRD	Aggst
				33	Oven	Whole	6	10	33	1500	1500 kPa	(- - - - Ratio - - - -)		Whole	Stabl	(- - Ratio/Clay - -)
	Depth			kPa	Dry	Soil	kPa	kPa	kPa	kPa	Moist		Corrected	Soil	2-0.5mm	CEC7	1500 kPa
Layer	(cm)	Horz	Prep	(- - - g cm-3 - - -)			(- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -)							cm3 cm-3	%
				4A1d	4A1h				4B1c	3C2a1a		3D1		4C1	3F1a1a	8D1	8D1
87P04595	0-13	A	S	1.14	1.26	0.033			28.9	12.2		1.022		0.19	41	0.77	0.45
87P04596	13-20	Bt1	S	1.20	1.70	0.123			38.8	19.3		1.036		0.23		0.70	0.43
87P04597	20-34	Bt2	S	1.20	1.80	0.135			40.5	22.1		1.043		0.21		0.75	0.45
87P04598	34-48	Bt3	S	1.28	1.73	0.098			35.5	20.6		1.038		0.18		0.70	0.46
87P04599	48-65	Btk	S	1.31	1.53	0.045			33.5	17.8		1.026		0.18		0.57	0.46
87P04600	65-96	Bk1	S	1.16	1.27	0.024			34.4	16.2		1.023		0.17		0.55	0.48
87P04601	96-135	Bk2	S	1.11	1.24	0.028			36.1	16.7		1.023		0.17		0.55	0.50
87P04602	135-152	Bk3	S							17.2		1.022				0.56	0.52

*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled As	:	Torreon		Fine, montmorillonitic, mesic Aridic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  87P0833

---

Water Content				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-
				(- - Atterberg - -)		(- - - - - Bulk Density - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - Water Content - - - - - - - - - - - - - - - - - - - - -)
				(- - - Limits - - -)		Field	Recon	Recon	Field	Recon	(- - - - - - - - - - - - - - Sieved Samples - - - - - - - - - - - - -)
				LL	PI		33	Oven		33	6	10	33	100	200	500
	Depth						kPa	Dry		kPa	kPa	kPa	kPa	kPa	kPa	kPa
Layer	(cm)	Horz	Prep	pct <0.4mm		(- - - - - - - - g cm-3 - - - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - - - - - - -)
				4F1	4F
87P04597	20-34	Bt2	S	60	42
87P04602	135-152	Bk3	S	42	21

---

Carbon  &  Extractions				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-
				(- - - - - Total - - - - -)			Est	OC	C/N	(- - - Dith-Cit Ext - - -)			(- - - - - - Ammonium Oxalate Extraction - - - - - -)						(- - - Na Pyro-Phosphate - - -)
	Depth			C	N	S	OC	(WB)	Ratio	Fe	Al	Mn	Al+½Fe	ODOE	Fe	Al	Si	Mn	C	Fe	Al	Mn
Layer	(cm)	Horz	Prep	(- - - - - - - - - - % of <2 mm - - - - - - - - - -)						(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)								mg kg-1	(- - - - - - % of < 2mm - - - - -)
					6B3a			6A1c		6C2b
87P04595	0-13	A	S		0.160			1.70	11	0.9
87P04596	13-20	Bt1	S		0.113			1.04	9	1.0
87P04597	20-34	Bt2	S		0.105			0.95	9	1.0
87P04598	34-48	Bt3	S		0.082			0.77	9	0.8
87P04599	48-65	Btk	S					0.47		0.6
87P04600	65-96	Bk1	S					0.36		0.5
87P04601	96-135	Bk2	S					0.33		0.5
87P04602	135-152	Bk3	S					0.36		0.5

---

CEC  &  Bases				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(- - - - - - NH4OAC Extractable Bases - - - - -)								CEC8	CEC7	ECEC		(- - - - Base - - - -)
								Sum	Acid-	Extr	KCl	Sum	NH4	Bases	Al	(- Saturation -)
	Depth			Ca	Mg	Na	K	Bases	ity	Al	Mn	Cats	OAC	+Al	Sat	Sum	NH4OAC
Layer	(cm)	Horz	Prep	(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)							mg kg-1	(- - - - cmol(+) kg-1 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2e	6O2d	6P2b	6Q2b		6H5a			5A3a	5A8b			5C3	5C1
87P04595	0-13	A	S	27.1*	5.2	0.2	1.0		1.3				21.1			96	100
87P04596	13-20	Bt1	S	18.7*	10.3	1.0	1.1	31.1	2.3			33.4	31.1			93	100
87P04597	20-34	Bt2	S	27.9*	13.3	1.0	1.2		0.6				36.8			99	100
87P04598	34-48	Bt3	S	47.7*	13.6	1.6	0.9						31.3			100	100
87P04599	48-65	Btk	S	54.8*	10.5	1.8	0.6						22.1			100	100
87P04600	65-96	Bk1	S	45.3*	9.3	1.8	0.4						18.8			100	100
87P04601	96-135	Bk2	S	49.5*	9.2	2.2	0.4						18.5			100	100
87P04602	135-152	Bk3	S	44.2*	9.7	2.7	0.5						18.5			100	100

^*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.

*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled As	:	Torreon		Fine, montmorillonitic, mesic Aridic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  87P0833

---

Salt				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-	-20-
				(- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Water Extracted From Saturated Paste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -)																	1:2
																			Total	Elec	Elec	Exch
	Depth			Ca	Mg	Na	K	CO3	HCO3	F	Cl	PO4	Br	OAC	SO4	NO2	NO3	H2O	Salts	Cond	Cond	Na	SAR
Layer	(cm)	Horz	Prep	(- - - - - mmol(+) L-1 - - - - -)				(- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -)										(- - - - % - - - -)		(- - dS m-1 - -)		%
				6N1b	6O1b	6P1b	6Q1b	6I1b	6J1b	6U1a	6K1c				6L1c	6W1a	6M1c	8A	8D5	8A3a	4F1a1a1		5E
87P04595	0-13	A	S	4.3	2.1	1.2	0.3	--	6.5	0.1	0.4				0.9	--	--	59.2	tr	0.72	0.37	1	1
87P04596	13-20	Bt1	S																		0.19	3
87P04597	20-34	Bt2	S	1.7	1.1	2.2	0.1	--	4.2	0.1	0.3				0.5	--	--	74.1	tr	0.46	0.31	2	2
87P04598	34-48	Bt3	S	1.3	0.9	3.6	tr	--	4.5	0.1	0.3				0.6	--	--	70.5	tr	0.53	0.35	4	3
87P04599	48-65	Btk	S	1.0	0.8	4.6		--	4.5	0.3	0.2				1.2	--	--	67.2	tr	0.59	0.37	7	5
87P04600	65-96	Bk1	S	0.7	0.6	4.7		--	5.6	0.4	0.2				1.2	--	--	59.6	tr	0.57	0.36	8	6
87P04601	96-135	Bk2	S	0.7	0.5	5.7		--	4.4	0.5	0.2				2.0	--	--	55.1	tr	0.66	0.41	10	7
87P04602	135-152	Bk3	S	0.9	0.8	7.7		--	3.9	0.4	0.7				4.5	--	--	58.5	tr	0.93	0.51	12	8

---

pH  &  Carbonates				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-
				(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)						(- - Carbonate - -)		(- - Gypsum - - -)
					CaCl2					As CaCO3		As CaSO4*2H2O		Resist
	Depth				0.01M	H2O	Sat			<2mm	<20mm	<2mm	<20mm	ohms
Layer	(cm)	Horz	Prep	KCl	1:2	1:1	Paste	Oxid	NaF	(- - - - - - - - - - - - % - - - - - - - - - - -)				cm-1
					4C1a2a	4C1a2a	8C1b			6E1g				8E1
87P04595	0-13	A	S		7.3	7.7	7.4			tr
87P04596	13-20	Bt1	S		6.5	7.1
87P04597	20-34	Bt2	S		7.4	8.0	7.3			1
87P04598	34-48	Bt3	S		7.8	8.4	7.9			5
87P04599	48-65	Btk	S		7.9	8.6	8.0			23
87P04600	65-96	Bk1	S		7.9	8.6	8.1			26
87P04601	96-135	Bk2	S		8.0	8.7	8.1			29				2100
87P04602	135-152	Bk3	S		8.0	8.6	8.1			32

*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled As	:	Torreon		Fine, montmorillonitic, mesic Aridic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  87P0833

---

Clay Mineralogy (<.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Elemental

EGME

Inter

SiO2

Al2O3

Fe2O3

MgO

CaO

K2O

Na2O

Retn

preta

Depth

Fract

7A2i

&nbsp;

&nbsp;

7C3

&nbsp;

tion

Layer

(cm)

Horz

ion

( - - - - - - - - - peak size - - - - - - - - - - )

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

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

mg g-1

87P04596

13.0-20.0

Bt1

tcly

MT 3

MI 3

KK 3

QZ 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

19

8.0

&nbsp;

&nbsp;

2.5

&nbsp;

&nbsp;

&nbsp;

87P04597

20.0-34.0

Bt2

tcly

MT 3

MI 3

KK 2

CL 1

QZ 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

17

7.0

&nbsp;

&nbsp;

2.4

&nbsp;

&nbsp;

&nbsp;

87P04598

34.0-48.0

Bt3

tcly

MT 3

MI 3

KK 2

CL 1

QZ 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

16

6.9

&nbsp;

&nbsp;

2.1

&nbsp;

&nbsp;

&nbsp;

87P04602

135.0-152.0

Bk3

tcly

CA 3

MT 3

MI 2

KK 2

CL 1

&nbsp;

&nbsp;

&nbsp;

&nbsp;

&nbsp;

12

4.9

&nbsp;

&nbsp;

1.5

&nbsp;

&nbsp;

&nbsp;

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm	&nbsp;	&nbsp;	&nbsp;	&nbsp;

MINERAL INTERPRETATION:
CA Calcite	CL Chlorite	KK Kaolinite	MI Mica	MT Montmorillonite
QZ Quartz	 	 	 	 

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: 81CO628002

( Las Animas, Colorado )

Print Date: May 20 2024 12:15PM

Sampled As	:	Torreon		Fine, montmorillonitic, mesic Aridic Argiustoll
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  87P0833

---

Sand - Silt Mineralogy (2.0-0.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Optical

EGME

Inter

Tot Re

Grain Count

Retn

preta

Depth

Fract

 

 

 

7B1a2

 

tion

Layer

(cm)

Horz

ion

( - - - - - - - - peak size - - - - - - - - - )

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

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

mg g-1

87P04597

20.0-34.0

Bt2

vfs

 

 

 

 

 

 

 

 

 

71

QZ 67

FK 20

OP 4

FP 2

MS 2

OT 2

 

 

 

 

 

 

 

 

 

 

 

BT 2

HN 1

GN tr

GC tr

CA tr

TM tr

 

 

 

 

 

 

 

 

 

 

PO tr

CL tr

GS tr

ZR tr

 

 

 

87P04602

135.0-152.0

Bk3

vfs

 

 

 

 

 

 

 

 

 

63

QZ 57

FK 13

CB 11

CA 6

OP 4

BT 3

 

 

 

 

 

 

 

 

 

 

 

GN 1

HN 1

GS 1

MS 1

ZR 1

FP 1

 

 

 

 

 

 

 

 

 

 

OT 1

GA tr

FF tr

CL tr

RA tr

PR tr

 

 

 

 

 

 

 

 

 

 

TM tr

 

 

 

 

 

 

FRACTION INTERPRETATION:
vfs - Very Fine Sand 0.05-0.1 mm	 	 	 	 

MINERAL INTERPRETATION:
BT Biotite	CA Calcite	CB Carbonate Aggregates	CL Chlorite	FF Foraminifera
FK Potassium Feldspar	FP Plagioclase Feldspar	GA Glass Aggregates	GC Glass Coated Grain	GN Garnet
GS Glass	HN Hornblende	MS Muscovite	OP Opaques	OT Other
PO Plant Opal	PR Pyroxene	QZ Quartz	RA Resistant Aggregates	TM Tourmaline
ZR Zircon