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119. Nyora - Heath Hill Fault

This information has been developed from one or more of these publications:

  • Sites of Geological and Geomorphological Significance in the Westernport Bay Catchment (1984) by Neville Rosengren.
  • 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 Environmental Significance in the Flood Plain of the Upper Yarra Valley Region (1983) by Neville Rosengren, Douglas Frood and Kim Lowe (as part of a study of Sites of Environmental Significance by the University of Melbourne for the then Upper Yarra Valley and Dandenong Ranges Authority).
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.


Location:

Nyora - 810590 to 825567. Four kilometres north-west of Nyora.

Access:

McDonalds Track, Heylens Road.

Ownership:

Crown Land and some private land

Geology:

The site includes the trace of the Heath Hill Fault. Baxter Formation sediments are exposed on the downthrown (western) and upthrown (eastern) blocks including one outlier in the railway cutting 1.5 kilometres west of Nyora. In the valley of a small creek south of the railway lines, Mesozoic sediments are seen to underlie the Baxter Formation sediments. West of the fault scarp, the Baxter Formation is largely buried by Cranbourne Sand and outcrops are confined to inliers at the ridge crests.

Significance:

Regional. The site displays the physiographic expression of the Heath Hill Fault and allows assessment to be made of the displacement by comparing the elevations of the Baxter Formation.

Management:

Class 3. The significance of features of interest at the site will be unlikely to be reduced by changes in land use.
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