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3. Cretaceous Boulders - Wonyip

This information has been developed from the publication:

  • Sites of Geological and Geomorphological Significance in Central Gippsland (1981) by Neville Rosengren, M.S McRae-Williams and S.M Kraemers
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. 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.

Locality:470314. Midland Highway 15 kilometres north of Welshpool.
Image: West Gippsland Sites of Significance
Boulders of Cretaceous sandstone.

Access:
Midland Highway.

Ownership:
Private Land.

Geology/Geomorphology:
An unusual outcrop of Cretaceous arkose occurs on a hill slope above the Princes Highway near Wonyip in the form of several egg-shaped boulders approximately 1.5 to 2 metres long (Plate 19) The boulders are apparently residual corestones, as spheroidal weathering can be seen in the road cutting below the slope
(Plate 20).

Significance:
Regional. Boulders of this origin are uncommon in the Cretaceous rocks of South Gippsland. The combination of the exposure in the road cutting and the boulders on the slope provide a clear example of a weathering and erosion process.

Management:
Boulders should not be removed or quarried at this site.

Image: West Gippsland Sites of Significance
Corestones of Cretaceous sandstone - Wonyip road cutting.

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