Agency Code: 501 Project Code: REF Site Code: ESP04
Described by: Tim Overheu Date: //

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

Location: MGA94 Zone: 51  383457 mE  6251456 mN 
Location notes: 80 m south-east of junction of Twilight Beach Road and Eleven Mile Beach Road.
Site notes: From Overheu et al (in press). Landform/topography: Parobolic coastal dunes; site is on crest of low dune; Drainage: external - nil.

Landform
Landform pattern:
Relief/modal slope:
Landform element: dune
Morphological type: crest
Pattern Relief: 

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: rapid profile permeability

Geology/parent material
Soil parent material:
Calcareous beach sand.

Vegetation
Notes: 25 taxa in 20 x 20 quadrat. (Identified by K.R. Newbey).

Species List
Medium Shrubs: Clematis microphylla, Hakea nitida, Olearia axillaris, Spyridium globulosum, Templetonia retusa
Low Shrubs: Acacia cochlearis, Adriana quadripartita, Cassytha melantha, Leucopogon parviflorus, Opercularia spermacocea, Phyllanthus calycinus, Pultenaea obcordata, Thomasia angustifolia
Ground: Dianella revoluta, Kennedia prostrata, Loxocarya flexuosa, Lepidosperma sp., Stipa variabilis

Current Classification
WA Soil Group: (1999) Calcareous deep sand
Australian Soil Classification: (2002) Shelly Rudosol, A thickness thick, A gravels non-gravelly, A texture sandy, B texture sandy, Soil Depth deep
ASC confidence: very high
Map Unit: 245To_1

Other Classifications
World Ref Base: (1998)  Calcaric  Arenosol
FAO soil unit:  Eutric Cambisol
Great Soil Group:  Calcareous sand
Northcote PPF: Uc1.11

Soil Profile Description

Horizon	Depth (cm)	Description	
A11	0-10	Dark greyish brown (10YR 4/2 moist) loamy fine sand; loose consistence; notes: 28% lime; slightly matted with roots; clear boundary.	
A12	10-25	Brown (10YR 4/3 moist) fine sand; loose consistence; apedal, single grain structure; notes: 31% lime; gradual boundary.	
A13	25-40	Brown (10YR 5/3 moist) fine sand; loose consistence; apedal, single grain structure; notes: 34% lime; gradual boundary.	
C	40-65	Pale brown (10YR 6/3 moist) fine sand; loose consistence; apedal, single grain structure; notes: 34% lime; gradual boundary.	
C	65-90	Light brownish grey (10YR 6/2 moist) fine sand; loose consistence; apedal, single grain structure; notes: 34% lime; gradual boundary.	
C	90-110	Very pale brown (10YR 7/3 moist) fine sand; loose consistence; apedal, single grain structure; notes: 33% lime.	

Lab Results (501 REF ESP04)

Basic Chemistry

Sample	Horizon	Match	Depth	pH_w	pH_CaCl2	EC	OC_wb	N_kjel	P_kjel	P_HCO3	K_HCO3	
A	1	A	0-10	8.5	7.9	9	1.4	0.12	180	4	20	
B	2	A	10-25	8.8	8.1	7	0.69	0.07	160	<2	<10	
C	3	A	25-40	9.1	8.3	7	0.4	0.04	160	2	<10	
D	4	A	40-65	9.2	8.4	7	0.22	0.02	150	<2	<10	
E	5	A	65-90	9.3	8.4	7	0.18	0.02	150	<2	<10	
F	6	A	90-110	9.4	8.4	7	0.13	0.01	140	<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	0-10	5	3.8	<0.1	<0.1	0.4	4.3 (1)	1 (3)	9.5 (1)	86 (2)	143.33 (2)	
B	2	A	10-25	3	3	<0.1	<0.1	<0.1	3.15 (1)	2 (3)	60 (1)	105 (2)	78.75 (2)	
C	3	A	25-40	2	2	<0.1	<0.1	<0.1	2.15 (1)	2 (3)	40 (1)	108 (2)	71.67 (2)	
D	4	A	40-65	1	1.4	<0.1	<0.1	<0.1	1.55 (1)	3 (3)	28 (1)	155 (2)	51.67 (2)	
E	5	A	65-90	1	1.2	<0.1	<0.1	<0.1	1.35 (1)	4 (3)	24 (1)	135 (2)	67.5 (2)	
F	6	A	90-110	1	1.2	<0.1	<0.1	<0.1	1.35 (1)	4 (3)	24 (1)	135 (2)	67.5 (2)	

Particle Size Analysis

Sample	Horizon	Match	Depth	s200_2000u	sand	s20_200u	silt	clay	
A	1	A	0-10	56	95 (2)	39	2	3	
B	2	A	10-25	60	94 (2)	34	2	4	
C	3	A	25-40	67	96 (2)	29	1	3	
D	4	A	40-65	75	96 (2)	22	1	3	
E	5	A	65-90	79	97 (2)	18	1	2	
F	6	A	90-110	84	97 (2)	13	1	2