The Sindab series are members of the mixed, mesic family of Typic Psammaquents [Gleyic Hydragric Anthrosols (Eutric Arenic) classified by WRB]. These soils have gray to olive brown or dark grayish brown fine gravelly loamy coarse sand Ap horizons and fine gravelly coarse sand Cg horizons. They occur on level to very gently sloping alluvial plains and are mostly in granitic areas.

Typifying pedon: Sindab fine gravelly coarse sand-paddy rice (Field description Sangju Gun profile No. 196; colors are for moist soil).

  Slope: 0-2%

  Elevation:  m above m.s.l.

  Soil moisture regime: Aquic

  Temperature regime: Mesic

  Parent material: Alluvium

  Diagnostic features: An ochric epipedon from a depth of 0 to 12 cm (An anthaquic horizon from a depth of 0 to 40 cm and a hydragric horizon from a depth of 40 to 80 cm by WRB).

Morphological properties of typifying pedon.

Ap - 0 to 12 cm. Olive brown (2.5Y 4/4) fine gravelly coarse sand; common coarse faint grayish brown (2.5Y 5/2) mottles; structureless, single grained; loose, non sticky and non plastic; 20 percent quartz grits; common fine roots; gradual smooth boundary; pH 6.5.  See remarks.

Cg1 - 12 to 40 cm. Olive gray (5Y 4/2) fine gravelly coarse sand; structureless, single grained; loose, non sticky and non plastic; 15 percent quartz grits; few fine roots; gradual smooth boundary; pH 6.0.

Cg2 - 40 to 80 cm. Light olive gray (5Y 6/2) fine gravelly coarse sand; structureless, single grained; loose, non sticky and non plastic; 10 percent quartz grits; few fine roots; diffuse smooth; pH 6.5.

Type Location: About 1 km. west of Geumgye (Ogsan village) Ri, Gongseong Myeon, Sangju Si, Gyeongsangbug Do.

Range in Characteristics: These soils have ochric epipedons. Depth over strongly contrasting layers is more than one meter and depth over hard rock is 3 to 5 meters. Base saturation is more than 60 percent. Reaction is medium to strongly acid. 10 to 35 percent quartz grit occurs throughout the profiles. Ap horizons are grayish brown, dark grayish brown, olive brown, gray, or light gray sand, loamy sand, coarse sand, or sandy loam. Cg horizons are commonly shades of gray, grayish brown, light olive gray, or dark gray fine gravelly sand, loamy sand, coarse sand, or loamy coarse sand. Thin strata of other textures may occur. In general, textures are coarser with depth.

Competing Series and Their Differentiae: These are the Hamchang, Geumji, Subug, Hwabong, Hwangryong, and Nagdong series. The Hamchang soils have coarse loamy textures. The Geumji soils are sandy skeletal texture family. The Subug soils have coarse loamy textures. The Gangdong soils are fine loamy over sandy texture family. The Hwabong soils have coarse sandy textures, lack gray colors and are somewhat excessively drained. The Hwangryong soils have sandy skeletal textures, lack gray mottles and are somewhat excessively drained. The Nagdong soils have fine sandy textures, lack gray mottles and are somewhat excessively drained.

Setting: The Sindab soils are formed in coarse textured sandy alluvium on alluvial plains, frequently in old stream channels and also in areas adjacent to dyked stream channels where the stream bed is higher than the alluvial plains. They also occur in narrow valley alluvium and below lakes commonly where seepage water and springs occur. Dominant slopes are about 1 percent and slope range is from 0 to 7 percent.

Principal Associated Soils: The Seongsan, Togye, Sangju, and Ibseog soils are associated in local alluvial positions above the Sindab soils. The Hwangryong and Hwabong soils are associated in river levee positions. The Samgag and Dosan soils are associated in residual upland positions.

Drainage and Permeability: Poorly drained. Permeability is very rapid and runoff is ponded or very slow. The ground water table is at or near the surface most of the year except where artificially controlled.

Use and Vegetation: Most areas are used for paddy rice.

Distribution and Extent: The Sindab soils are of moderate extent and are distributed along the main river and in local valley alluvial plains, mainly in granitic areas throughout the country.

Series Established: Ulju Gun, Gyeongsangnam Do, 1967.

Laboratory data sheets of typifying pedon.

Depth (cm)	Horizon	( --- Total ---)			(-- Clay --)		(-- Silt --)		(------- Sand -------)
		Clay	Silt	Sand	Fine	Coarse	Fine	Coarse	VF	F	M	C	VC
		LT	.002	.05	LT	LT	.002	.02	.05	.10	.25	.5	1
		.002	- .05	- 2	.0002	.002	- .02	- .05	- .10	- .25	- .50	- 1	- 2
		- - - - - - - - - - - Pct of ˂ 2mm (3A1) - - - - - - - - - - -
0-12	Ap	2.3	7.5						6.0	15.8	27.5	23.9	17.0
12-40	Cg1	2.1	5.4						5.4	12.8	25.0	27.0	22.3
40-80	Cg2	2.1	1.0						2.0	10.1	30.2	29.1	25.5

Depth (cm)

Coarse Fractions(mm)

˃2mm

Orgn

Total

Extr

Total

(-- Dith -Cit --)

Weight

Wt

C

N

P

S

Extractable

2-5

5-20

20-75

.1-75

Pct of

Fe

Al

Mn

Whole

6A1c

6B3a

6S3

6R3a

6C2b

6G7a

6D2a

Pct of ˂ 75mm (3B1)

Soil

Pct ˂ 2mm

g/kg

Pct of ˂ 2mm

0-12

0.42

12-40

0.23

40-80

0.06

Depth (cm)

Ratio/Clay

Atterberg

( Bulk Density )

COLE

(- Water Content -)

WRD

CEC

1500

Limits

Field

33

Oven

Whole

Field

10

33

1500

Whole

kPa

LL

PI

Moist

kPa

Dry

Soil

Moist

kPa

kPa

kPa

Soil

8D1

8D1

4P1

4P

4A3a

4A1d

4A1h

4D1

4B4

4B1c

4B1c

4B2a

4C1

Pct ˂0.4mm

- - g/cc - -

cm/cm

-- Pct of ˂2mm --

cm/cm

0-12

-

13.5

9.8

2.9

12-40

1.64

9..5

7.2

2.1

40-80

-

1.65

4.4

4.2

1.8

Depth (cm)	( NH4OAc Extractable Bases )					Acid-	Extr	(----- CEC -----)			Al
	Ca	Mg	K	Na	Sum	ity	Al	Sum	NH4-	Bases	Sat
	5B5a	5B5a	5B5a	5B5a	Bases			Cats	OAc	+ Al
	6N2e	6O2d	6Q2b	6P2b		6H5a	6G9a	5A3a	5A8b	5A3b	5G1
	- - - - - - - - - - - - meq / 100g - - - - - - - - - - - -										Pct
0-12	1.80	0.60	0.13	0.10					2.10
12-40	1.20	0.60	0.13	0.08					2.20
40-80	0.85	0.35	0.08	0.08					1.50

Depth (cm)

(Base Sat)

CO3 as

Res

Cond

(------ pH ------)

Acid Oxalate Extraction

Sum

NH4-

CaCO3

NaF

KCl

CaCl2

H2O

Opt

Al

Fe

Si

OAc

˂2mm

.01M

Den

5C3

5C1

6E1g

8E1

8I

8C1d

8C1f

8C1f

8J

6G12

6C9a

6V2

---- Pct ----

ohms/cm

dS/m

1: 1

1: 2

1: 1

- Pct of ˂2mm -

0-12

127.6

5.1

6.3

12-40

91.4

4.2

5.3

40-80

90.7

3.9

4.6

Depth (cm)	Elemental Analysis of Clay							3/	Free	Mn
	H2O	Igni	SiO2/	SiO2	Fe2O3	Al2O3	K2O	CEC	Fe2O3
	%	loss %	R2O3	%	%	%	%	me/100g	%	ppm
0-12		10.69	2.52	49.59	3.48	29.95	0.89		0.16	10.4
12-40		10.82	2.23	46.98	5.56	32.25	1.86		0.16	12.8
40-80		-	-	-	-	-	-		-	-