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18.2 Barham River East Branch Ridge - Landslip Control

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 site) section of the Geological Society of Australia website for details of geological heritage reports, and a bibliography.

Location:18-313137. Ridge between Wild Dog Creek and Barham River eight kilometres south of Apollo Bay.

Access:
Wild Dog Track.

Ownership:
Crown land (Reserved Forest).

Geology/Geomorphology:
The site is a forested ridge trending north-south and dividing the Wild Dog Creek and Barham River East Branch. Relief from the valley floor to ridge crest is approximately 150 metres. Outcrop is limited to the creeks but the trend of the ridge is probably determined by the strike of the Mesozoic sedimentary rocks of the Otway Group. It is proposed that the site be used as a control site for comparative studies of landslips and other mass movements with adjacent ridges of similar relief and geology. These adjacent sites show extensive mass movement forms, and this instability in part is due to a different land use history, e.g. Site 18.3.

Significance:
State. It is essential that sufficient reference sites be available to display the nature of land surfaces prior to European settlement in Australia, particularly in areas where adjacent slopes have been completely cleared of forest and used for grazing or agriculture. In this way, an assessment of the impact of settlement on slope stability, soils and run-off may be undertaken.

Image: Barham map
Map of Sites 18.2 and 18.3
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