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5-15 Mount Clay

This information has been developed from the publications:
  • An assessment of the Geological/Geomorphological Significance of Private Land in the Shire of Portland (1981) by N. Rosengren, J Mallen, T Shepherd.
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.

Locality:

7221-585665 to 678700. South-west of Narrawong East.

Access:

Orchards Road off Princes Highway.

Geology/Geomorphology:

The southern side of the Mount Clay volcano is clearly defined by a bluff approximately 60 m high. The bluff is considered to be derived from faulting or warping of the underlying Tertiary sediments. A slope foot terrace is prominent at the base of the bluff.

Significance:

Regional. The bluff is a clear example of the processes of faulting and marine cliffing.

Management:

Because of the area covered by the site, the value of the significant geomorphological features is unlikely to be reduced by localised land disturbance, e.g. quarrying or road works.

Reference:

Boutakoff, N. (1963). The Geology and Geomorphology of the Portland Area. Geolgical Survey of Victoria, Memoir No. 22.
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