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109. Lang Lang - Cranbourne Sand Topography

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:

Lang Lang - 766600. Four kilometres south-east of Lang Lang.

Access:

Lang Lang to Nyora road or walk along the South Eastern Railway.

Ownership:

Crown Land and private land.

Geology/Geomorphology:

The site encloses an area of characteristic topography of Cranbourne Sand, with short curving ridge crests and internal drainage depressions. These depressions typically contained small lakes, but natural swamp encroachment and artificial drainage have eliminated most areas of open water. The north-western margin of the site is marked by a gently curving long ridge which lies adjacent to a flat area that is a drained lake basin. The ridge marks the shoreline of the now dry lake and was shaped by wave action rather than wind deposition.

Significance:

Regional. The site has been selected to illustrate the nature of Cranbourne Sand topography on the eastern side of Westernport Bay. The distribution of this formation is limited here to the area south-east of Lang Lang.

Management:

Class 2. Extensive clearing and draining of the wetlands in the site should not be permitted. Some sand quarrying could be permitted as this provides sections into the Cranbourne sand. Roadworks should be planned to avoid disturbing the swampy depressions.
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