162 W. G. WOOLNOUGH. 



About two miles inland from Orescent Head, and sepa- 

 rated from it by a belt of swampy land, is a steep escarp- 

 ment consisting of very massive conglomerates. The form 

 of the escarpment is very strongly suggestive of a fault 

 parallel to the coast. The lithological character of the 

 conglomerate is similar to that of the rocks of Camden 

 Haven, which have been determined by Oarne as Trias- 

 Jura. The conglomerate extends inland for a considerable 

 distance, but is mostly hidden by the marshy alluvials 

 which are so strongly developed in this area. 



On the southern side of the Macleay River above 

 Kempsey there occur rocks of very great importance from 

 the point of view of Australian stratigraphy, and it is to 

 these I wish to direct attention especially. 



Crossing the river at Sherwood we come almost immedi- 

 ately upon conglomerates interstratifled with the Kempsey 

 slates, but in this neighbourhood their relationships are 

 not at all clearly defined. 



Following the road to Moparrabah and Willi Willi, in a 

 general west-north-westerly direction, an extensive series 

 of chocolate and olive-green crumbly shales are encountered. 

 These have a fairly uniform dip of N. 30° W. at 15°. 



At Portion 109, Parish Kullatine, a massive belt of 

 crinoidal limestone crosses the track, but the rocks immedi- 

 ately associated with it are not exposed. Inclusive of the 

 occurrence just noted, the track crosses similar belts of 

 limestone three times between this point and Moparrabah. 

 In each instance the beds seem to be passed in descending 

 sequence, though this is not certain. There may be several 

 bands of limestone, or lenticular masses of this rock upon 

 different horizons, or one and the same band may have 

 been displaced by a series of step faults, throwing in a 

 general easterly direction. Which of these explanations is 

 the correct one must be decided by detailed mapping of 



