114 



STRATIGRAPHICAL GEOLOGY OF THE PERMO-CAR- 



BONIFEROUS SYSTEM IN THE MAITLAND- 



BRANXTON DISTRICT, 



With some Notes on the Permo-Carboniferous PALiEOGEO- 

 graphy in New South Wales. 



By A. B. Walkom, B.Sc, Linnean Macleay Fellow of the 

 Society in Geology. 



Page. 



Preliminary 

 Lower Marine Series 

 Greta Coal-Measures 

 Upper Marine Series 

 Palseogeographical Notes.. 



114 

 115 

 127 

 134 

 139 



(Plates viii.-xiii., and ten text-figures.) 



This paper is the result of about four months' fieldwork in the 

 Hunter River District, the area examined during that period being 

 bounded on the north by the Hunter River, and on the other three 

 sides roughly by a line drawn through West Maitland, Mt. Vin- 

 cent, Mt. View, and Belford, and also a small area north of the 

 Hunter River, between West Maitland and Paterson. 



The most important work done on this area is Professor David's 

 memoir on "The Geology of the Hunter River Coal-Measures of 

 New South Wales."* In that work, the coal-measures are worked 

 out in detail, but the Lower Marine Series and the Upper Marine 

 Series are not treated in as great detail as the coal-bearing series. 

 It was with the object of obtaining a more detailed knowledge of 

 these two marine series, that this work was done. One portion of 

 the outcrop of the Greta Coal-Measures, namely, that extending 

 south from Branxton, was not very well-known at the time Pro- 



Mem. Geol. Survey N. S. Wales, Geology No. 4, 1907. 



