2 The story of Granite and Bega Cheese - Sapphire Coast

So far so good but the going now gets weird. On the same headland there is another
network of dykes of granite composition, quite unlike the chemistry of Dromedary,
and a granite outcrop in the sand.
Granite dyke
Granite outcrop
We can see the granite intruding into, breaking up and assimilating the Ordovician
beds.
Granite intruding into the turbidite
The white rock cutting across the centre of the turbidite is not another dyke but a vein
composed of quartz, common in these highly deformed old rocks. The beds cut by
the vein are Ordovician sedimentary rocks called turbidites.
Turbidites were deposited on the deep ocean floor from very fluid sand and mudladen
avalanches cascading down continental slopes. Sand and mud gradually
settled out of suspension. Successive avalanches are often separated in time, but
can build up thick piles of sediment. The same processes occur today down the
continental slope off eastern Australia.