PHYSIOGRAPHY OF THE SOUTHERN TABLELAND OF N.S.W. 339 



byne road crosses it at Barney's Ridge, it is a veritable 

 V horst," being only a few miles in width, with the Jindabyne 

 Senkungsf eld to the west and the relatively lower Berridale 

 fault block to the east. 



The southern portion of the Adaminaby fault block is 

 bounded on the west by the faults referred to by Professor 

 David, 1 which have a throw of about 800 feet, strike north 

 and south and hade to the west. It will be convenient to 

 refer to these as the Jindabyne faults. The eastern boundary 

 is another fault also mentioned by Professor David near 

 Lake Ooolamatong ; this has also an approximate north 

 and south strike, bat hades to the east and has a throw of 

 700 to 800 feet. Further north at Rhine Falls where the 

 Oooma road drops from the Adaminaby tableland to the 

 Berridale tableland two faults occur, with a combined throw 

 of about 900 feet. These have a similar hade and strike 

 to the Ooolamatong fault, and may be called the Rhine 

 Falls Faults. 



IV. The Berridale Fault Block. — This has an extensive 

 area extending from the Murrumbidgee River to probably 

 as far south as the Victorian border. It is bordered on the 

 west by the Adaminaby fault block, but its southern and 

 south-eastern limits have not been investigated. In the 

 northern part of this area the Monaro peneplain has an 

 altitude of 3,000 to 3,200 feet, but its surface has suffered 

 considerable warping during uplift, as evidenced by the 

 considerable number of small lakes and lagoons scattered 

 over its surface, the existence of which can be best 

 explained as the result of warping. Lake Ooolamatong 

 may be quoted as an example. Residuals of the Mount 

 Ainslie peneplain occur, such as Mount Gladstone (3,529 

 feet, and The Brothers (3,859 feet). 



1 Geological Note on Kosciusko by Prof. T. W. E. David. Proc. Linn 

 Soc. N.S.W., Vol. xxxn, pp. 657-668. 



V— Nov. 3, 1909. 



