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Mount Wiridgil

This information has been obtained from the report: Eruption Points of the Newer Volcanic Province of Victoria by Neville Rosengren. This report was published in 1994 and was prepared for the National Trust of Australia (Victoria) and the Geological Society of Australia (Victorian Division). The review of eruption points was based on an earlier unpublished manuscript Catalogue of the post-Miocene volcanoes of Victoria compiled by O P Singleton and E B Joyce (Geology Department, University of Melbourne 1970).

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 value. 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:Wiridgil Hills

Mount Wiridigil.

38 14 00S 143 13 00E (external link); 7521-4-2 (Camperdown) 939661. 6 km E of Camperdown. Wiridgil Road.

Hampden.

Land Tenure/Use:
Private land. Wiridgil Road crosses the complex. Mostly bare, windbreaks, plantation on lower eastern slope. Small intermittently worked scoria pit.

Type 8:
Multiple scoria eruption points within maar.

Mount Wiridgil is a group of low hills, arcuate ridges and shallow depressions that mark a complex eruption point. The general circular form of the complex and a perimeter of thin tuff deposits suggests an initial maar eruption forming a shallow crater that was followed by extensive scoria cone building. The scatter of hills and depressions indicates several eruption points that now largely infill and obscure the original maar crater. The scoria of the several hills is of similar type.

235 m; 60 m.

Regional:
The locality is a large example of multiple and different eruption types. It illustrates a stage in the infilling of maar craters by later scoria eruptions

References:
Ollier, C.D. & Joyce, E.B. 1964. Volcanic physiography of the Western Plains of Victoria. Proceedings of the Royal Society of Victoria 77, pp 357-376.
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