WLRA63

WLRA - soil pit WLRA63- landscape
Lower alluvial terrace and river floodplain

Site Code

WLRA63

Location

Salt Creek, western Victoria

Landform

Alluvial Plain

Geology

Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

Element

Plain

Slope

0–1%

Aspect

Horizon

Depth (cm)

Description

0–8

Dark brown to brown (7.5YR4/3); loamy sand, heavy; weak fine subangular blocky structure; rough ped-fabric; weak consistence (dry); pH 7.0; abrupt boundary to:

A21

8–25

Brown (10YR4/4); light brown (10YR6/4 dry); fine sandy loam; massive (structureless); earthy ped-fabric; weak consistence when dry; many fine subangular quartz gravels; pH 7.0; gradual boundary to:

A22

25–35

Yellowish brown (10YR5/4); conspicuously bleached very pale brown (10YR7/3 dry); coarse sandy loamy; massive (structureless); earthy ped-fabric; weak consistence when dry; many fine and medium subangular quartz gravels; pH 7.0; sharp boundary to:

B21

35–60

Yellowish red (5YR4/6) with few fine faint yellow mottles; light clay, silty; strong medium prismatic, parting to fine angular blocky structure; smooth ped-fabric; strong consistence when dry; pH 4.7; gradual boundary to:

B22

60–80

Yellow brown(10YR5/4) with common distinct medium (2.5YR3/6) and fine (10YR6/8) mottles; light clay; silty; moderate medium polyhedral, parting to fine subangular blocky structure; smooth ped-fabric; firm consistence (slightly moist); pH 5.5; clear boundary to:

B23

80–105

Brown (7.5YR4/3) with few fine faint red and grey mottles; light clay, silty; strong medium prismatic, parting to medium and fine angular blocky structure; smooth ped-fabric; very firm consistence when slightly moist; pH 6.5; gradual boundary to:

Light yellowish brown (10YR6/4), with common distinct medium (7.5YR6/6) mottles; light clay; weak coarse polyhedral parting to moderate fine subangular blocky structure; rough ped-fabric; weak consistence (slightly moist); pH 7.0.

Management considerations

Texture contrast soil. Occasionally Gradational texture change with depth. Light textures, well drained to subsoil.
Neutral surface (A1-A22); highly acidic upper subsoil (B21) grading towards neutral with depth.
Surface soil has protective organic matter content, still slightly susceptible to sheet and rill erosion.
Subsurface horizons bleached, susceptible to sheet and rill erosion.
Subsoil likely to be sodic and dispersive at depth. Imperfectly too poorly drained.

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Lower alluvial terrace and river floodplain		Site Code	WLRA63
		Location	Salt Creek, western Victoria
		Landform	Alluvial Plain
		Geology	Quaternary Shepparton Formation: fluvial silt, sand and minor gravel
		Element	Plain
		Slope	0–1%
		Aspect	-
Horizon	Depth (cm)	Description
A1	0–8	Dark brown to brown (7.5YR4/3); loamy sand, heavy; weak fine subangular blocky structure; rough ped-fabric; weak consistence (dry); pH 7.0; abrupt boundary to:
A21	8–25	Brown (10YR4/4); light brown (10YR6/4 dry); fine sandy loam; massive (structureless); earthy ped-fabric; weak consistence when dry; many fine subangular quartz gravels; pH 7.0; gradual boundary to:
A22	25–35	Yellowish brown (10YR5/4); conspicuously bleached very pale brown (10YR7/3 dry); coarse sandy loamy; massive (structureless); earthy ped-fabric; weak consistence when dry; many fine and medium subangular quartz gravels; pH 7.0; sharp boundary to:
B21	35–60	Yellowish red (5YR4/6) with few fine faint yellow mottles; light clay, silty; strong medium prismatic, parting to fine angular blocky structure; smooth ped-fabric; strong consistence when dry; pH 4.7; gradual boundary to:
B22	60–80	Yellow brown(10YR5/4) with common distinct medium (2.5YR3/6) and fine (10YR6/8) mottles; light clay; silty; moderate medium polyhedral, parting to fine subangular blocky structure; smooth ped-fabric; firm consistence (slightly moist); pH 5.5; clear boundary to:
B23	80–105	Brown (7.5YR4/3) with few fine faint red and grey mottles; light clay, silty; strong medium prismatic, parting to medium and fine angular blocky structure; smooth ped-fabric; very firm consistence when slightly moist; pH 6.5; gradual boundary to:
B24	105–130+	Light yellowish brown (10YR6/4), with common distinct medium (7.5YR6/6) mottles; light clay; weak coarse polyhedral parting to moderate fine subangular blocky structure; rough ped-fabric; weak consistence (slightly moist); pH 7.0.
Management considerations
Texture contrast soil. Occasionally Gradational texture change with depth. Light textures, well drained to subsoil. Neutral surface (A1-A22); highly acidic upper subsoil (B21) grading towards neutral with depth. Surface soil has protective organic matter content, still slightly susceptible to sheet and rill erosion. Subsurface horizons bleached, susceptible to sheet and rill erosion. Subsoil likely to be sodic and dispersive at depth. Imperfectly too poorly drained.