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Mount Widderin

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 The review of eruption points was based on an earlier unpublished manuscript Catalogue of the post-Miocene volcanoes of Victoria compiled by O P Singleton and E B Joyce (Geology Department, University of Melbourne 1970).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:37 44 30S 143 21 30E (external link); 7522-1-S (Skipton South) 074201. 5 km S of Skipton. Camperdown-Ballarat Road.
Image: Eruption Point, Mt Widderin
Mount Widderin and lava flow extending south.


Hampden.

Land Tenure/Use:
Private land. Grazing, bare, stone cleared in paddocks for stone walls.

Type 4:
Lava hill.

Mount Widderin is a broad, low lava dome. There are extensive lava flows to the south and west with stony rises topography. Road cuttings provide geological sections through the flows on the south-west of the hill. The most significant feature is a lava cave with two large chambers and a smaller end chamber containing a permanent lake. There has been extensive rock collapse in the caves. Rare phosphate minerals associated with bat guano were reported but these deposits have now been stolen or destroyed.

360 m; 60 m.

State:
This is a major example of a lava dome with extensive stony rises topography and long lava flows. The cave has the largest chambers of any of the Victorian lava caves.

References:
Ollier, C.D. 1963. The Mount Hamilton lava caves. Victorian Naturalist 79, pp. 331-336.
Ollier, C.D. & Brown, M.C. 1965. The lava caves of Victoria. Bulletin volcanologique 28, pp. 1-15.
King, R.L. 1990b. Geological features on the Ballarat 1:250 000 sheet. Geological Survey of Victoria Unpublished Report 1990/6.


Image: Eruption Point, Mt Widderin
Mount Widderin.

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