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15. Pakenham - Contact Metamorphic Ridges

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:
Pakenham – 637891; 658887; 667867. Two to four kilometres north and north-west of Pakenham.
Access:Thewls Road, Toomuc Valley Road, and Ahern Road.
Ownership:Private land.
Geology/Geomorphology:The southern margins of the Lysterfield Granodiorite are marked by distinctive narrow ridges that trend west-east. These are erosion resistant stones of metamorphosed Silurian sediments. A ridge of similar prominence and origin lies immediately west of the edge of the Tynong Granite north of Pakenham.
Significance:Regional. The ridges are major topographic features and are clear examples of differential erosion. They are the most obvious examples of contact metamorphic ridges in the study area.
Management:Class 3. The significance of the site will not be reduced by changes in land use.
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