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4-17 Sugarloaf Hill

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:

7221-536824. Six kilometres north-east of Heywood.

Access:

Princes Highway.

Geology/Geomorphology:

Sugarloaf Hill is a complex feature and consists of two partly coalesced craters breached on the south-eastern side. A small plug of basalt remains on the ridge between the craters.

Significance:

Regional. The volcanic plug complex illustrates an explosive phase of the Greenwald-Cobboboonee Basalt eruptions.

Management:

Quarrying of the site could be permitted as this would produce new exposures of the volcanic material.
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