3 
may in some cases, be held to explain the want of continuity in 
the scarp-like face of the plateau. (Fig. 2). 
Index 
Marine Ternary 
Cretaceous Basins 
Tnas-Jura 
Pernio Carboniferous 
Granite 
-5'S 5 
GjtEAT AcrSTEALTEN 
Bight 
Tectonic Features 
or 
Fig. 2. 
Map showing tlie Tectonic Features of Western Australia. 
When viewed cn bloc, this plateau presents a fairly even sur- 
face, which rises to no very great elevation above sea-level (Fig. 
3) ; it has a very restricted and limited rail. tall, and is drained by 
