BY W. N. BENSON. 515 



drift, auriferous or gem-bearing clays, sands, and gravels. Such 

 occur at Bingara, and south of Keera, and are discussed in more 

 detail later. 



In the Nundle district also, the Tertiary period was one in which 

 valleys were deeply cut, filled with auriferous drift, and flooded 

 with basalt. Just outside the area of the present survey, it seems 

 probable that this basalt was much intruded by sills of tescheni- 

 tic dolerite, and basanite(13). 



A great period of elevation and block -faulting closed the Ter- 

 tiary period, and the present topography was thus initiated. 

 This requires careful study, and will be discussed in a later 

 chapter. 



LIST OF REFERENCES CITED. 



1. Anderson, W. A.— Ann. Rept. of Dept. of Mines N. S. Wales, 1888, 



pp. 179-182. 



2. Clarke, W. B. — Reports on the Goldfields of New South Wales, pub- 



lished in the Votes and Proceedinga of the Legislative Council. 

 Papers relative to the Geological Survey of New South Wales, and 

 also in Great Britain, Parliamentary Papers. Further Papers 

 relative to the Discovery of Gold in Australia. Contracted titles of 

 the several reports and references as under. 



(a) Report i., Geology of the Country between Marulan and Peel 



River. 



(b) Report ii., Hanging Rock Diggings : Geology. 



(c) Report iii., Dispersion of Gold in Australia. 



{d) Report v., Hanging Rock and Peel River Field: Conditions 



and Prospects, 

 (e) Report viii., Western Slopes of New England : Structure. 



N.S. W., Leg. Council. Great Britain, Pari. Papers. 



(a) 1852, ii., pp. 463-467. Aug. 1853, pp. 26-30. 



(6) 1852, ii., pp. 469-475. -. Aug. 1853, pp.30-35. 



(c) 1852, ii., pp.477-482. Aug. 1853, pp. 35-39. 



(d) 1852, ii. , pp.485-487. Aug. 1853, pp.40-42. 



(e) 1853, i., pp.565-612. Feb. 1854, pp. 42-55. 



3. David, T. W. E., and Pittmann, E. F.— "On the Palaeozoic Radio- 



larian Rocks of New South Wales. Q.J.G.S., 1899, pp. 16-37. 



i. Jaquet, J. B. — Ann. Rept. of Dept. of Mines of New South Wales. 



5. Odernheimer, F. — " On the Geology of a part of the Peel River Dis- 

 trict in Australia." Q.J.G.S., 1855, pp.399-402. 



