34 T. W. E. DAVID. 



of granite extending from Bombala to Braidwood runs N. 

 15° E. and S. 15° W., but the mass extending from the Snowy 

 near Forest Hill to Adelong trends about N. 8° W. 



In the Forbes-Parkes Goldfield 1 Mr. Andrews shows the 

 trend of the Silurian folds to be N.N.E. with suggested 

 overthrusts to the E.S.E., an approximation to the Broken 

 Hill trends in pressure directions. In the Oobar region 

 Mr. Andrews finds the strike of the Silurian limestones and 

 conglomerates and Devonian quartzites is generally about 

 N.N.W., with several major faults apparently overthrusts 

 striking in the same direction with the overthrusting being 

 towards the west. Traced in the direction of Girilambone, 

 the strike changes to N. and even N.E., the rocks there 

 being schists and quartzites, possibly, as Mr. Andrews 

 thinks at present, Pre-Oambrian. Possibly these latter 

 rocks represent an offshoot from the Pre-Oambrian series 

 of Broken Hill which have, as already stated, prevalent 

 north-easterly trends. Mr. C. S. Wilkinson 2 shows that 

 the strike of the Devonian beds, W. of the Blue Mountains is 

 N.N.W. and S.S.E., and Mr. J. E. Game's work confirms 

 this. At the same time the strike of the Jenolan Gave 

 Pentamerus limestone, in the Silurian rocks, is nearly N. 

 and S. with a westerly dip. Mr. O. A. Siissmilch 3 and Dr. 

 H. I. Jensen 4 have referred to the folded rocks of Silurian 

 and Devonian age in the Oanobolas region, and the former 

 determines the strike of these folds as about N. 30°W.(true). 



Near Ponto to the west of Wellington, a very strongly 

 developed and intensely folded trough in the Devonian and 

 Silurian rocks has lately come under my notice. If the 



1 Depart, of Mines, Geol. Surv., Mineral Eesources No. 13, by authority 

 1910. 



* Geological map of the districts of Hartley, Bowenfels, Wallerawang, 

 and Eydal. 



3 This Society's Journal, Vol. xl, p. 130, 1906. 



* Proc. Linn. Soc. N. S. Wales, Vol. xxxiv, pt. 1, 1909, pp. 158 - 194. 



