CARBONIFEROUS AND PERMO-CARBONIFEROUS ROCKS, N.S.W. 275 



Feet. 



Sandstones ... 20 



Fluvio-Glacial Conglomerate ... ... ... ... 80 



Pelsitic Tuffs and Tuffaceous Sandstone with some 



Conglomerates ... ... ... ... ... 330 



Fluvio-glacial Conglomerates with striated pebbles ... 210 



Sandstones and Shales ... ... ... ... ... 20 



Mudstones ... ... ... ... ... ... 170 



Sandstones ... ... ... ... ... ... 100 



Varve Shales with contemporaneous contortions and 



containing some large boulders of grano-diorite... 170 



Total 2630 



This series of glacial beds is considerably thicker than 

 that which occurs at Seaham and contains a much larger 

 proportion of ordinary sediments. The section, however, 

 is particularly important in that it shows undoubtedly the 

 occurrence of the Rhacopteris flora stratigraphically above 

 some of the glacial beds. This Lochinvar section is shown 

 in Plates XIX and XXIII. 



The Geological interval represented by the Kuttung 

 Series, — The topmost beds of the Kuttung Series (the 

 Glacial Beds) are followed in the Lower Hunter District 

 by the Lower Marine Series, the lowest subdivision of the 

 Permo-Oarboniferous System, without any apparent angular 

 unconformity. The only fossils so far found in the Kuttung 

 Series, are those listed upon page 258, and these are con- 

 sidered by Dr. A. B. Walkom to be a Middle Carboniferous 

 flora (see Appendix I). This raises the question as to 

 whether there may be a disconformity between the Kuttung 

 Series and the Permo-Oarboniferous formation, with a series 

 of Upper Carboniferous strata missing? the field evidence 

 in the area known to the writer does not support such a 

 view. 1 There is, near the base of the Lower Marine Series 



1 My co-author, however, explains in Part II of this paper that he con- 

 siders such a disconformity exists in places. 



