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8822-5 Gabo Island

Sites 8822 1 to 10 - Mallacoota to Cape Howe

This information has been developed from the publications:
    • Sites of Geological and Geomorphological Significance in Central Gippsland (1981) by Neville Rosengren, M.S McRae-Williams and S.M Kraemers.
    • Sites of Geological and Geomorphological Significance in the Gippsland Lakes Catchment (1984) by Neville Rosengren.
    • Sites of Geological and Geomorphological Significance in East Gippsland, Victoria (1981) by Neville Rosengren, M.S McRae-Williams
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 for details of geological heritage reports, and a bibliography.


Location:
570390. 500 metres south of Telegraph Point.
Image: East Gippsland Sites of Significance
Eastern shore of Gabo Island and Howe Range.

Abstract:
Low, dune covered granitic island.

Access:
Boat landing may be made only at one small harbour on the north-west of the island. The airstrip is suitable for light aircraft.

Ownership:
Commonwealth Government Lighthouse Reserve. Prior permission for landing must be obtained from the Commonwealth Department of Transport.

Geology:
The island consists of red granite of Late Middle to Early Upper Devonian age similar to that of the Howe Range and includes a small area of lighter coloured (grey) granite. Small lamprophyre dykes occur on the eastern shore. The granite outcrops continuously around the shoreline but on the body of the island it is overlain by quartzose dunes.

Geomorphology:
High cliffs occur on the south of the island but the northern coastline apart from one small sand beach sector is a low boulder-strewn ramp. Irregular grass and scrub-covered hummocky dunes, probably remnants of parabolic dunes, form the relief of most of this island.

Significance:
Regional. The red granite has been quarried for building stone in the past. The dunes are inactive cliff top dunes.

Management:
Maintenance of dune vegetation is required to prevent renewal of dune mobility.

8822 1 to 10
Sites 8822-1 to 10

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