Reference soil Norway 01: Calcaric Regosol

NO001

Distribution of Regosols (rough estimation supplied by soilgrids)

FAO-UNESCO 1974:

Calcaric Regosol
0-0 cm	ochric A horizon

Other classification

USDA-SCS (1975)

Udorthent

sandy-skeletal

mixed

frigid

Classification (other)	Para rendzina
	A black, sandy A horizon overlies a very gravelly sand of marine origin. The profile is calcareous throughout and many shells occur. On top a thin dark brown layer occurs, consisting of wind-blown deposits covering the profile.

Location:

Province of Sör-Tröndelag, Val near Nes

Parent material

The main parent rock/ material over which the soil has been formed (1st entry)	mixed lithology and composition
Mode of Accumulation or deposition of parent material (1st entry)	eolian sand
Texture of parent material (1st entry)	gravelly
Weathering status of solid rock (1st entry)	slightly
Depth1 of lithological boundary	cm
The main parent rock/ material over which the soil has been formed (2nd entry)
Mode of Accumulation or deposition of parent material (2nd entry)	marine sediments
Texture of parent material (2nd entry)	sandy
Weathering status of solid rock (2nd entry)	slightly
Resistance against weathering (solid rock) (2nd entry)
Soil Depth; depth to which roots can easily penetrate throughout the year	cm
Remarks on Parent Materials	1:thin, 2:shell-rich

Physical

Particle size distribution:

Depth (cm)		Gravel (%)	Very Coarse Sand (%)	Coarse Sand (%)	Medium Sand (%)	Fine Sand (%)	Very Fine Sand (%)	Total Sand (%)	Coarse Silt (%)	Fine Silt (%)	Total Silt (%)	Clay (%)
0-8	:	-	-	-	-	-	-	90.7	2.2	2.4	4.6	1.7
8-14	:	-	-	-	-	-	-	90.6	2.5	3.2	5.7	0.7
14-25	:	52	-	-	-	-	-	89.2	3.5	4.1	7.6	0.2
25-48	:	-	-	-	-	-	-	90.3	2.4	2.7	5.1	1.6
48-70	:	-	-	-	-	-	-	92.2	1.6	1.6	3.2	1.6

Other physical data

Depth (cm)		Bulk Density (kg/dm³)	Spec. Surf. Area (m2/g)	COLE (cm/cm)	Water Disp. Clay (%)	Clay (%)
0-8	:	-	-	-	-	1.7
8-14	:	-	-	-	-	0.7
14-25	:	-	-	-	-	0.2
25-48	:	-	-	-	-	1.6
48-70	:	-	-	-	-	1.6

Chemical characteristics:

Depth (cm)		pH H2O	pH KCl	EC 1 : 2.5 (mS/cm)	CaCO3 (%)	Org. C (%)	Org. N (%)	C / N	Exch. Acid (cmol/kg)	Exch. Al (cmol/kg)	Ca (cmol/kg)	Mg (cmol/kg)	K (cmol/kg)	Na (cmol/kg)	Sum Cations (cmol/kg)
0-8	:	7.6	7.1	0.17	9.8	1.85	0.16	12	-	-	8.1	0.4	0.1	0.1	8.7
8-14	:	7.1	6.5	0.21	2.3	4.81	0.35	14	-	-	14.6	0.9	0.1	0.1	15.7
14-25	:	7.3	6.7	0.16	2.8	1.99	0.18	11	-	-	10.4	0.6	0.1	0.1	11.2
25-48	:	8.1	7.3	0.12	24.7	0.73	0.05	15	-	-	6.3	0.3	0.1	0.0	6.7
48-70	:	8.5	7.9	0.1	-	0.29	0.03	10	-	-	3.5	0.1	0.1	0.0	3.7

Depth (cm)		CEC Soil (cmol/kg)	CEC Clay (cmol/kg)	CEC Org (cmol/kg)	ECEC (cmol/kg)	Base sat. (%)	Al sat. (%)	ESP (%)
0-8	:	9.2	541	6.5	-	95	-	-
8-14	:	20.9	-	16.8	-	75	-	-
14-25	:	11.7	-	7	-	96	-	-
25-48	:	4.6	287	2.6	-	146	-	-
48-70	:	2.2	138	1.0	-	168	-	-

Elemental composition of the soil:

Depth (cm)		SiO2 (wt%)	Al2O3 (wt%)	Fe2O3 (wt%)	CaO (wt%)	MgO (wt%)	K2O (wt%)	Na2O (wt%)	TiO2 (wt%)
0-8	:	65.8	9.5	3.4	7.7	1.6	1.40	-	0.7
8-14	:	69.5	9.5	2.9	3.1	1.1	1.50	-	0.6
14-25	:	70.9	11.2	3.4	3.3	1.2	1.60	-	0.6
25-48	:	54.6	8.6	2.7	15.8	0.9	1.30	-	0.5
48-70	:	59.8	9.0	3.1	14.9	1.2	1.40	-	0.5

Depth (cm)		MnO2 (wt%)	P2O5 (wt%)	LOI (wt%)	SiO2 / Al2O3 (mol/mol)	SiO2 / Fe2O3 (mol/mol)	SiO2 / R (mol/mol)	Al2O3 / Fe2O3 (mol/mol)
0-8	:	0.10	0.10	8.0	11.8	51.7	9.6	4.4
8-14	:	0.10	0.10	9.5	12.4	64.3	10.4	5.2
14-25	:	0.10	0.10	5.0	10.8	55.1	9.0	5.1
25-48	:	0.10	0.10	12.9	10.8	54.6	9.0	5.1
48-70	:	0.10	0.10	11.8	11.3	51.6	9.2	4.6

Clay mineralogy:

Depth (cm)		Kaolinite	Mica / illite	Vermiculite	Chlorite	Smec	Halloysite	Mixed layer	Quar	Feldspar	Gibbsite	Goethite	Hematite
0-8	:	strong	weak to medium	-	weak to medium	-	-	-	weak to medium	strong	-	-	-
8-14	:	strong	very weak to weak	-	weak to medium	-	-	strong	weak to medium	weak to medium	-	-	-
14-25	:	weak to medium	weak to medium	-	weak to medium	-	-	weak to medium	weak to medium	strong	-	-	-
25-48	:	weak to medium	weak to medium	-	strong	very weak to weak	-	-	weak to medium	strong	-	-	-
48-70	:	strong	weak to medium	-	strong	-	-	weak to medium	weak to medium	weak to medium	-	-	-

Profile description:

Ah 0-8 cm	dark brown (10YR 3/3, moist), medium sand, single grain,
2Ahb 8-24 cm	(10YR 2/1.5, moist), medium sand gravelly, single grain,
2AC 24-48 cm	coarse sand very gravelly, single grain,
2C 48-100 cm	coarse sand very gravelly, single grain

Current land use at the site
Major crops
Main type of irrigation
Rotation scheme
Vegetation Type;The natural vegetation at the site	grassland
Status of vegetation

The altitude of the soil profile relative to mean sea level, specified in meters	5 m asl
Regional landform	marine terrace
Topography of the surrounding country	flat or almost flat
Physiographic Unit in the immediate surrounding of the site
The slope refers to the inclination of the land immediately surrounding the site. The measured or estimated slope angle is specified to the nearest per cent	11 %
The physiographic position of the site where the profile is located	middle slope
Form of the slope surrounding the site	straight
Slope Aspect of the site

Depth of groundwater table	cm
Groundwater Top	cm
Groundwater Bottom	cm
Kind of groundwater table	no groundwater table observed
Top Stagnating Layer	cm
Bottom Stagnating Layer	cm
Estimated permeablity (class) of least permeable part of the profile
Drainage Class	somewhat excessive
To Drainage Class
Moisture conditions of the profile: dry from -to	cm
Moisture conditions of the profile: moist from -to	cm
Wet From - To	cm

Microrelief type: small-scale differences in relief in the direct vicinity of the site
Microrelief Height
Rockiness
Stoniness
Average size of stones
Shape of stones (on average)
Cracks	no cracks observed
Slaking of aggregates by tillage, rainfall or frost	no surface slaking/crusting observed
Evidence of salt	non-saline
Evidence of alkali

Soil erosion type (1st entry)
Occurrence of soil aggradation
Slope Stability

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