Prospect dolerite intrusion
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The Prospect dolerite intrusion, or Prospect intrusion, is a Jurassic picrite or dolerite laccolith that is situated in Sydney, New South Wales, Australia. Lying in the heart of Cumberland Plain, in t
Dolerite intrusion overlying Ashfield Shale and the Hawkesbury sandstone
Diagram of igneous structures (laccolith is C on top-right).
Exposed shale from Prospect Highway
The quarried hill today, with dolerite intrusion on sandstone and shale.