580 GRKAT SERPENTIl^E-BELT OF NEW SOUTH WALES, V., 



Avliicli is indicated by the prominent hill in Housefield's Selection, 

 Portion 120, Parish of Woolomol. This consists of coarse bouldery 

 agglomerate, the inclusions of which are similar to those on Cleary's 

 Hill, and are so rounded as to resemble even more closely, normally 

 waterworn pebbles, and these are abundant in the upper portion of 

 the mass which is at least 200 feet thick, and is free from inter- 

 stratified mudstones. North of the hill is a small dyke of kerato- 

 phyric quartz-felpar-porphyry, fragments of which also occur in 

 the agglomerate. 



The horizon of the Baldwin Agglomerates seems to be repre- 

 sented south of the Peel River by the mass of agglomerate, that 

 runs through the eastern corner of the town of West Tamworth, 

 and through portion 27, Parish of Calala, as well as by a band 

 of tuff in the valley of Goonoo Goonoo Creek, portions 15 and xx. 

 Evidently the agglomerate has greatly thinned out in this direc- 

 tion. No continuation of the great mass of agglomerate that comes 

 down to the north side of the river, at the Two-Mile Bridge, can 

 be traced on the southern side; which is a further piece of evidence 

 in favour of the view, that the Peel River alluvium conceals an 

 important fault. 



The line of junction between the Middle and Upper Devonian 

 claystones and mudstones is quite an indefinite one, when there is 

 no intervening development of agglomerate, as is the ease with the 

 majority of the boundary line drawn through the Parish of Woo- 

 lomol.^ This line is, therefore, almost entirely arbitrary, and was 

 drawn merely by reference to the occurrence of the limestone on 

 the east and agglomerate on the west. The claystones of the Middle 

 Devonian Series, when they have not been silicified into cherts, can 

 rarely be distinguished from those of the Upper Devonian Series. 

 There is probably a fault between the limestones and agglomerates 

 in sections 41 and 44 respectively of the Parish of Woolomol, as 

 they are much closer to one another than would be otherwise 

 possible. 



Above the agglomerates, extend the monotonous series of thick 

 claystones, and mudstones, occasionally radiolarian, interstratified 

 with some tuffs, just as has been described for the Barraba Series 



