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Victorian Resources Online

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    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
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6. Agricultural Practices

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.


Agricultural threats to the karst areas can be summarised as: groundwater depletion, rubbish dumping, indiscriminate clearing for improved pasture and bulldozing of sinkholes, dolines and caves. Clearing and bulldozing may increase surface erosion, cause cave siltation and damage cave entrances, and should be prohibited in areas of high cave density. Rough grazing is compatible with the maintenance of cave sites. Cave entrances on grazed land, e.g. Cave Ridge (CR-1) should be fenced off to prevent stock falling into caves.

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