Wianamatta shale

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exposed Ashfield Shale of the Wianamatta group, by the Pacific Highway, Chatswood, Australia

Wianamatta shale is a type of shale prevalent in the Sydney region of New South Wales, Australia. It dates from the Triassic Period. It produces a rich clayey soil, often with poor drainage, such as that in the Cumberland Plain.[1]

Other rock types found in Sydney include the older Narrabeen shale and the Hawkesbury sandstone.

[edit] References

  1. ^ Fairley A, Moore P (2000). Native Plants of the Sydney District:An Identification Guide (2nd ed. ed.). Kenthurst, NSW: Kangaroo Press. pp. 19. ISBN 0-7318-1031-7. 
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