GHF07a

Location: Mumbannar
Australian Soil Classification: Melacic, Humosesquic, (Semiaquic), PODOSOL (very thick surface horizon)
General Landscape Description: Gently undulating plain
Land Unit: Follett Dunes and Plains
Geology: Quaternary aeolian

General Land Unit Description: The majority of this land unit falls south of the Kanawinka fault. This land unit comprises areas with deep sand deposits. The residual landscape is thought to be influenced by the retreat of the Murray Sea which left stranded beach ridges oriented south west–north east. These were subsequently covered by superficial sand sheets in later depositional phases, which formed the landscape seen today.

The major landforms in this land unit are dunes and swales. Podosols and Kurosols or Chromosols are the major soil types found on the dunes and rises. Podosols are soils with a ‘coffee rock’ layer. The Kurosols or Chromosols tend to have a deep sandy topsoil over the clay. The common soil types on the swales are black cracking clay (Vertosols) or Grey Sodosols. Some Ferric Kurosols or Chromosols can also occur on the swales or lower slopes of the dunes.

1.5 year old Eucalyptus globulus plantation on ex-agricultural land

Soil Profile Morphology

A1	0-30 cm	Very dark grey (10YR3/1); loamy fine sand; single grain structure; loose consistence, moist; many medium roots present; pH 4.7; clear and smooth change to:
A21	30-80 cm	Light brownish grey (10YR6/2); fine sand; single grain structure; loose consistence, moist; few fine roots present; pH 4.6 clear and smooth change to:
A22	80-150 cm	Light grey (10YR7/2), conspicuously bleached; fine sand; single grain structure; loose consistence, moist; pH 4.7; changes to:
A23	150-230 cm	Similar to layer above; changes to:
Subsoil
Bhs	230+ cm	Cofee rock (Bs) layer, similar to GHF7c, but deeper.