Your gateway to a wide range of natural resources information and associated maps

Victorian Resources Online

  1. Victorian Resources Online
    1. Catchment Management Regions
      1. Glenelg-Hopkins Region
        1. Ararat Hills
        2. Landform
          1. Elevation
          2. Geomorphology
          3. Land Systems
          4. Eruption Points of Newer Volcanic Province
          5. 3D Catchment Overview
          6. Sites of Geological and Geomorphological Significance
        3. Land Use
        4. Soil
        5. Land and Water Management
  2. Soil and Land Survey Directory
  3. VRO Sitemap
  4. VRO Feedback

5-8 Cliff coast and landslip - Anderson Point to Dutton Way

This information has been developed from the publications:
  • An assessment of the Geological/Geomorphological Significance of Private Land in the Shire of Portland (1981) by N. Rosengren, J Mallen, T Shepherd.
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 (external link) for details of geological heritage reports, and a bibliography.

Locality:

7221-528574. 500 metres north of Anderson Point.

Access:

Hanlon Parade, Portland.

Geology/Geomorphology:

A massive rotational slope failure occurred here in October 1975, lowering the surface level by about 10 metres. It was largely controlled by an underlying montmorillonitic clay layer in the Greenwald-Cobboboonee Basalt, on which the shear failure surface was located. The slip has since been stabilised and basalt boulders have been placed at the base of the sea cliff to reduce wave erosion. North of here the cliffed coast exposes Port Campbell Limestone overlain by Whalers Bluff Formation. There is a coarse cobble and boulder beach at the base of the cliffs.

Significance:

State. The landslip at Hanlon Parade occurred entirely in weathered basaltic rock, which is uncommon in Victoria. The exposures of Port Campbell Limestone and Whalers Bluff Formation assume considerable significance because of the likely degradation of the currently better exposed section of Whalers Point (see Site 5-13).

Management:

The upper sections of the cliff are obscured by dense scrub, and a clearing operation would greatly enhance the geological value of the site.

Reference:Joyce, E.B. (1979). 'Landslide hazards in Victoria', In Heathcote, R.L. and Thom, E.G. (Eds.), Natural Hazards in Australia, Australian Academy of Science.
Neilson, J.L. (1975). Geological Report on Landslips at Portland, Geological Survey Report, 1975/2.
Page top

For information about DJPR please contact:

Phone: 136 186

National Relay Service: 133 677 or relayservice.gov.au

Email: customer.service@ecodev.vic.gov.au

Online: Contact us

Copyright

Privacy

Disclaimer

Accessibility
Department of Jobs, Precincts and Regions - State Government of Victoria

© State of Victoria (Agriculture Victoria) 1996 - .

Creative Commons License

This work, Victorian Resources Online, is licensed under a Creative Commons Attribution 4.0 licence. You are free to re-use the work under that licence, on the condition that you credit the State of Victoria (Agriculture Victoria) as author, indicate if changes were made and comply with the other licence terms.


The licence does not apply to ‘branding’ or some ‘images or photographs’ that may be owned by third parties. We ask you to seek prior approval to use images using the VRO feedback form. Access to higher quality images can also be provided on request.


This page was last updated on .