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G7 - Yarra Fault Scarp - Alluvial Fan

This information has been developed from the publications:

  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
  • Sites of Geological and Geomorphological Significance on the Coast of Port Phillip Bay (1988) by Neville Rosengren.
  • Sites of Geological and Geomorphological Significance in the Shire of Otway (1984) 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 (external link) section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

Location:AMG Ref: 507254.
Image: Upper Yarra Sites of Significance
 Flood crevasse at G11(A), Cut-Off at G10 (arrow), Yarra Fault Scarp (y.....s) Colluvial/alluvial Fans at G7

Access:
Henley Road.

Geology/Geomorphology:
The western margin of the Yarra floodplain at Yering and Coldstream West is marked by a distinctive escarpment. South-west of Henley Road bridge, the escarpment is 80 metres high and is weakly incised by several small streams. There has been long debate about the origin of this scarp (Juston, 1911; Keble, 1918; Hills, 1935; Gill, 1949; Garratt, 1973), with the most recent evidence (Garratt, 1975) indicating it to be a fault.

The small streams that cross the scarp issue onto the floodplain across broad alluvial fans at the slope foot. The flood plain is a complex of meanders cross with numerous cut-offs and alluvial ridges.

The site includes a steep section of the scarp of the Yarra Fault, alluvial fan materials at the scarp foot and examples of abandoned channels and low ridges of the meander scroll plain.

Significance:
Regional. The scarp, slope deposits and meander patterns are representative of the landforms, of the western margin of the Yarra flats.

Management:
Class 3. No constraints on land use are necessary to maintain the significant features of the site.

G7 Yarra Fault Scarp
Yarra Fault Scarp
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