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L1 - Lerderderg Valley - Alluvial Fan

This information has been developed from this publication:

  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
Geological heritage sites, including sites of geomorphological interest and volcanic heritage sites, are under regular revision by the Geological Society of Australia, especially in the assessment of significance and values. Reference should be made to the most recent reports. See the Earth Science Heritage section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

Location:Lerderderg - 723321. Shire of Bacchus Marsh. Western valley slope of Lerderderg River 600 m northwest of Morven Homestead.
Image: Sites of Significance Werribee
Lerderderg Valley - Alluvial Fan

Access:

Lerderderg Gorge road.

Ownership:

Private land.

Site Description:

A small gully draining from the south of the Blackwood Ranges has developed a large, steeply sloping alluvial fan extending onto the river terrace. The fan is now inactive and is weakly incised by a small gully.

Significance:

Local. The fan is a clear example of a relict landform, constructed during a phase of higher discharge and sediment load by the streams of these ranges.

Management:

Class . Continued rural land use will maintain the significance of the site. Buildings should not be permitted on the site.
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