In closing this introductory chapter attention is called 

 to the grand pioneer work of Clarke, David and Wilkinson 

 on the origin of our continental margins. Thus Wilkinson 

 considered the IHawarra escarpment as one fault and the 

 steep face of the continental margin as another. His 

 results appear to have been based mainly upon intuition, 

 whereas David's great contribution was the result of com- 

 parative studies. By the sure methods of stratigraphy the 

 latter geologist actually proved beyond doubt the existence 

 of several of the fault and fold lines of the Plateau or 

 Highland 1 Period. What David thus laid down on a sound 

 geological basis the writer has carried on by physiographic 

 method. 



To Carrie [Kerosene Shale and Western Coal Memoirs] 

 we are indebted also for our knowledge of the irregular 

 slope of small angular value which has carried the sand- 

 stone surface from sea level between Sydney and Newcastle 

 to a height of nearly 4,000 feet at Clarence Siding. 



To Hedley and Denham the writer is indebted for his 

 knowledge of the geographical distribution of animal life 

 in Australasia, while to Maiden and Cambage he is indebted 

 for his knowledge of the present distribution of plants in 

 Eastern Australia. It is hoped that the present report 

 will be of service to l>i«>lo gists and geologists generally. 



The list of literature is supplied at the end of the report. 

 The references at the feet of the pages refer to this list. 

 II. Thesis. 



Eastern Australia has been a geographical unit during 

 late Tertiary and post Tertiary time. A peneplain was 

 developed during Eocene and Miocene time. That pene- 



vriter would suggest the name of the Ko-<iu-k> lVri.»i. aft»T the 

 us mountain and range of that time, which form the grandest and 

 kn.-.wn 1 ■ett'.- Kh,t Au.-fmhan Highlands. Throughout this 

 f the late Tertiary uplift will be called the Kosciusko Period. 



