Agency Code: 501 Project Code: REF Site Code: GTN05
Described by: W Macarthur Date: //

Observation type: Unknown Category: 
Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50  327434 mE  6827221 mN 
Location notes: Eradu Nature Reserve (Conservation of Land Management) adjacent to Geraldton-Mullewa Rd, 200 m from southern boundary and 75 m from western boundary.
Site notes: Landform/topography: Upland sandplain remnant; Drainage: external - nil.

Landform
Landform pattern: sand plain
Relief/modal slope:
Landform element:
Morphological type: flat
Pattern Relief:  sand plain

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: cryptogam surface

Geology/parent material
Soil parent material:
Jurassic sediments - sandstones and shales.

Vegetation
Notes: Mallee heath.

Species List
Tree: Actinostrobus arenarius, Banksia sceptrum
Tall Shrubs: Eucalyptus jucunda
Medium Shrubs: Allocasuarina campestris, Calothamnus blepharospermus, Hakea bucculenta, Hakea circumalata, Xylomelum occidentale
Low Shrubs: Chamelaucium sp., Choretrum pritzelii, Calothamnus quadrifidus, Grevillea didymobotrya, Grevillea eriostachya
Ground: Conostylis sp., Drosera sp., Mesomelaena stygia, Neurachne sp., Stylidium sp.

Current Classification
WA Soil Group: (1999) Brown deep sand
Australian Soil Classification: (2002) Basic Regolithic Yellow-Orthic Tenosol, A thickness medium, A gravels non-gravelly, A texture sandy, B texture clayey, Soil Depth deep
ASC confidence: very high
Soil Series: Eradu
Map Unit: 220Er_1

Other Classifications
World Ref Base: (1998)  Eutric  Arenosol
FAO soil unit:  Eutric Regosol
Great Soil Group:  Siliceous sand
Northcote PPF: Uc5.11

Soil Profile Description

Horizon	Depth (cm)	Description	
A11	0-5	Yellowish brown (10YR 5/5 moist) sand; loose consistence; apedal, single grain structure; notes: thin algal crust; clear boundary.	
A12	5-10	Yellowish brown (10YR 5/6 moist) sand; loose consistence; apedal, single grain structure; gradual boundary.	
A13	10-20	Yellowish brown (10YR 5/8 moist) loamy sand; very weak dry consistence; sandy fabric; gradual boundary.	
B11	20-40	Yellowish brown (10YR 5/8 moist) mixed with brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; gradual boundary.	
B12	40-80	Brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; diffuse boundary.	
B13	80-110	Brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; notes: Brownish yellow (10yr 6/9).	

Lab Results (501 REF GTN05)

Basic Chemistry

Sample	Horizon	Match	Depth	pH_w	pH_CaCl2	EC	OC_wb	N_kjel	P_kjel	P_HCO3	K_HCO3	
A	1	A	0-5	6	5.1	1	0.44	0.02	29	2	22	
B	2	A	5-10	6.2	5.3	1	0.29	0.01	24	<2	16	
C	3	A	10-20	6	5.1	1	0.21	0.01	17	<2	10	
D	4	A	20-40	6.3	5.4	1	0.16	0.01	17	<2	<10	
E	5	A	40-80	6.5	5.8	1	0.1	0.01	17	<2	<10	
F	6	A	80-110	6.2	5.8	1	0.07	0.01	17	<2	<10	

Exchangeable Cations

Sample	Horizon	Match	Depth	CEC	Exch_Ca	Exch_Na	Exch_K	Exch_Mg	Sum_Exch	ESP	CaMgR_Exch	Exch_cats%	Base_stat	
A	1	A	0-5	2	0.9	<0.1	<0.1	0.3	1.3 (1)	4 (3)	3 (1)	65 (2)	18.57 (2)	
B	2	A	5-10	1	0.7	<0.1	<0.1	0.3	1.1 (1)	5 (3)	2.33 (1)	110 (2)	15.71 (2)	
C	3	A	10-20	2	0.7	<0.1	0.1	0.3	1.15 (1)	4 (3)	2.33 (1)	58 (2)	12.78 (2)	
D	4	A	20-40	1	0.6	<0.1	<0.1	0.3	1 (1)	5 (3)	2 (1)	100 (2)	9.09 (2)	
E	5	A	40-80	1	0.7	<0.1	<0.1	0.4	1.2 (1)	4 (3)	1.75 (1)	120 (2)	9.23 (2)	
F	6	A	80-110	1	0.5	<0.1	<0.1	0.4	1 (1)	5 (3)	1.25 (1)	100 (2)	9.09 (2)	

Particle Size Analysis

Sample	Horizon	Match	Depth	s200_2000u	sand	s20_200u	silt	clay	
A	1	A	0-5	77	90 (2)	13	3	7	
B	2	A	5-10	83	91 (2)	8	2	7	
C	3	A	10-20	76	89 (2)	13	2	9	
D	4	A	20-40	72	87 (2)	15	2	11	
E	5	A	40-80	65	85 (2)	20	2	13	
F	6	A	80-110	72	87 (2)	15	2	11