Quote Originally Posted by THE BOOGER View Post
I was always told at school and according the interweb the Blue mountains are part of the Great Dividing Range
They are. Even official Australian Government websites say they are.

The GDR obviously has many spurs which are a natural part of any range. Every spur has a water course that run parallel to it (that's how the spur was made) and as you said earlier, the the BM's constitute a spur that runs off the GDR.

Even Tasmania is considered to be part of the GDR as the so called southern spur. On that basis I think we can safely say that the BM's are indeed a part of the GDR. Never heard or read anything to the contrary - until this thread.