North West Solitary Island

North West Solitary Island is an island found off the New South Wales coast and inside the continental shelf. It is located 30 km north-east of Coffs Harbour and about 18 km south of Wooli.

The island is part of the Solitary Islands Marine Park established 2 January 1998 and managed by the New South Wales Maritime Parks Authority.[1]

Rocks on North West Solitary Island consist of repeating beds of sillicaceous argillite, mudstone and sandstone. The argillite probably formed from volcanic ash falls. The beds are 5 to 10 cm thick. The strike of the beds is between 0° and 20° with overturned beds dipping to the east. The mudstone shows cleavage at an angle steeper than the bedding planes by 20°. Tectonically it is part of the Coffs Harbour Block which in turn is part of the New England Orogen.[2]

References
  1. "Marine Parks Authority NSW - Solitary Islands Marine Park". mpa.nsw.gov.au. Retrieved 5 September 2010.
  2. R. J. Korsch (1993). "Reconnaissance geology of the Solitary Islands: constraints on the geometry of the Coffs Harbour orocline". New England Orogen, eastern Australia. pp. 265–274. ISBN 1863890300.CS1 maint: uses authors parameter (link)


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