BY A. B. WALKOM. 



11 



beds varies between 195° and 170°, and they dip at low angles 

 (15° to 8°). They have been described by Professor David,* and 

 consist of fine-grained, reddish-brown to chocolate-coloured shales, 

 containing numerous boulders up to about 2 feet in diameter. Very 

 many of these boulders are waterworn, but some are undoubtedly 

 striated and faceted as a result of ice-action. Their thickness 

 varies, a section near the north-west corner of portion 13, Parish 

 of Gosforth, gives their thickness as about 150 feet, but further 

 south, on Windella Estate, they are quite 250 feet thick. There is 

 a good outcrop on the road from Loehinvar to Windermere, but 

 the lower limit there is hidden under recent alluvial, so that the 

 thickness is not determinable. No marine fossils have ever been 

 found in these shales. The glacial beds are not found on the 

 northern side of the 

 Hunter River. At the 

 eastern end of the Car- 

 boniferous rocks, near 

 Eelah, they are over- 

 lapped by higher mem- 

 bers of the Lower Ma- 

 rine Series: while, at 

 the western end of the 

 Carboniferous complex, 

 the Elderslee fault lias 

 thrown the UpperCoal- 

 Measures down against 

 the Carboniferous. 



Immediately overly- 

 ing the chocolate shales, 

 is a massive sandstone, 



about 100 feet thick : and no marine fossils have yet been 

 reported from this. Careful search was made, at several points, in 

 this sandstone for marine fossils, but without success. It contains, 

 however, numerous plant-remains. There is a possibility, then, 

 that this lowest part of the Lower Marine Series is of freshwater 



Ravensfi»ld Sandstone 



SomevnaT calcareous Mud«Ton« «■*!« 



numirui marine focsili 

 Foriminifc/al Imestonl honjon 



Baulf *,fc a-nyj <!../.« of nafrtl.ri, JaMTi A. 



ano TuKs w.rfi marine fcJS'lt 



ngtomtraTc and sandsTofll 



Caroomfi/ous rocki - mostly *rupfiv«i 

 Wift i ftw stdim«ntan«s 



Vertical Section in the vicinity of 

 Pokolbin and Mt. View. 



• Journ. Proc. Pvoyal Soc. N. 8. Wales, 1899, xxxiii., pp. 154-159. 



