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SW2 Mount Kororoit - Eruption Point

This information has been developed from the publications:

  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
  • Sites of Geological and Geomorphological Significance on the Coast of Port Phillip Bay (1988) by Neville Rosengren.
  • Sites of Geological and Geomorphological Significance in the Shire of Otway (1984) by Neville Rosengren.
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.

LocationSydenham West - 936298. Shire of Melton. Conical hill 8 m north of Melton and west of Leakes Road.

SW2 - Flat-topped, asymmetrical profile of Mount Kororoit (note similarity to Mount Aitken)

Access
Leakes Road.

Ownership
Private land

Site Description
Mount Kororoit is a small conical hill about 1500 m around the base and rising 100 m above the surrounding terrain. The hill is predominantly a scoria mound with the summit capped by a rocky outcrop of lava agglomerate.

Several narrow parallel and arcuate ridges of vesicular basalt lava are prominent on the slopes immediately below the summit. Similar ridges and lava capping are seen on many of the eruption points on the Werribee Plains and the Gisborne district, and several explanations have been offered for their origin.

Significance
Regional. Mount Kororoit is a fine example of the eroded volcanoes of the Gisborne - Melton district. It has been the subject of a recent detailed geophysical study that has produced a different hypothesis for the origin of the radial and parallel ridges.

Management
Class 2. Continuation of agricultural land use at the present intensity is consistent with maintaining the significance of the site. Residential development should not be permitted on the area of the site.

References
Edwards, A.B. and Crawford, W. (1940). The Cainozoic Volcanic Rocks of the Gisborne District, Victoria. Proc. R. Soc. Vict. 52:281-311.
Singleton, O.P. (1973). Geology of the Bacchus Marsh District, In, McAndrew J. and Marsden, M.A.H., Regional Guide to Victorian Geology. School of Geol., Univ. Melb. 59-64.
VandenBerg, A.H.M. (1973). Geology of the Melbourne District. In, McAndrew, J. and Marsdens, M.A.H. Regional Guide to Victorian Geology. School of Geol., Univ. Melb. 14-30.
Fischer, W.S. and Thomas, L. (19821). A study of Mt Kororoit, Victoria: A Small Volcanic Vent. Proc. R. Soc. Vict 93:99-103.



SW2 - Radial squeeze-up ridges, Mount Kororoit.

Map Sw1 Sw2

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