BY W. N. BENSON. 269 



Stonier(19), and described by Mr, Card (43). This continues 

 for some distance to the south. The area is in the zone of 

 rapid flexing that lies east of the conglomerate all along the 

 line. On a creek, near the bend of the river by Eulowrie, 

 Stutchbury figured a series of steeply folded and faulted beds, 

 and reported the discovery of Lepidodendron therein. (See fig. 6). 

 What is believed to have been the same section was rapidly ex- 

 amined b}^ the writer, and found to be composed of rocks of the 

 Barraba-type, with small lenticles of dark blue limestone, and a 

 band of pebbles. Though enclosed between masses of Burindi 

 rocks, this is probably a narrow infaulted strip of Barraba mud- 

 stone. Crossing the river, some impure limestone was found 

 directly north of Eulowrie homestead; and this can be traced 

 northwards to near the old Police Barracks, where Porter found 

 Lithostrotion(%) cohitnnare with Syrinyopora syrinx, and another 

 species of Lithostrotion(l){ii). This may be correlated, pro tern., 

 with the Lithostrotion-limestone at Bingara Falls. It appears 

 to lie near the base of the Burindi Series (See p. 242). 



Dr. Stanley Smith has kindly pointed out to the w^riter that 

 Lithostrotion does not elsewhere occur at the base of the Carbon- 

 iferous Series proper. Dr. ^'aughan(45) states, e.g., ^'Lithostro 

 lion (both massive and dendroid) enters in the early Vis^an " 

 [upper moiety of the Lower Carboniferous] "in Korth 

 America, Britain, and Belgium." It may be, therefore, that the 

 true base of the Carboniferous System lies at some unrecognisable 

 ho7'izon in the Barraba m,udstone. For the purpose of mapping, 

 however, the base of the Burindi beds is the lowest recognisable 

 horizon in the Carboniferous that can be traced. 



East of the Eulowrie limestone, the section on Boundary Creek 

 exposes Barraba mudstones dipping gently to the west, and 

 extending up to the foot of the scarp of the Bingara Range. 

 Though the section appears unbroken, there is reason to think 

 it is more or less faulted. 



Returning to Caroda, and continuing to the north, there is 

 evidence for faulting in the duplication of the oolitic, crinoidal 

 limestone. It is interbedded with green, tuffaceous rock, and 

 overlain by conglomerates like that at Caroda. This green 



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