700 GREAT SERPENTINE BELT OF NEW SOUTH WALES, vi., APP. 



by Baldwin Agglomerates. (This will be discussed in more 

 detail in Part vii.). There is no reason, therefore, for assuming, 

 from the absence of Agglomerates, the presence of a fault sepa- 

 rating the Middle and Upper Devonian beds at Attunga. 



To the east of the limestone-occurrences in Parish Cuerindi, 

 the radiolarian cherts give place to claystones and mudstones, 

 which, as shown in the earlier map, are probably of Upper 

 Devonian age; and these are followed by other mudstones and 

 tufFaceous sandstones adjacent to the Serpentine, which are com- 

 parable with the Burindi (Carboniferous) rocks by the Serpentine 

 at Crow Mountain, Attention was first called to the fossils 

 obtained from these beds by Mr. S. M. 'I out, and their age was 

 determined by Mr. W. S. Dun. Spii'ifera cf. striata, var., and 

 Aviculopecten sp., were recorded by him in Mr. Tout's collection. 

 No sedimentary formations more recent than these (excepting 

 river-alluvium) have been observed in the area studied. 



The dominant physiographic feature in this region is the 

 granite plateau, from which there is a sharp fall to the rocks of 

 the Eastern Series, followed by a series of foothills steadily 

 descending to the Peel River and Namoi plains. 'Jhe isolated 

 mass of Round Hill, west of Somerton Road, was not visited by 

 the writer, but is probably [Baldwin Agglomerate. 



BIBLIOGRAPHY. 



1. Benson, W. N. — " The Geology and Petrologj^ of the Great Serpentine 



Belt of New South Wales." These Proceedings, (a) Part i., Vol. 

 xxxviii., pp. 497-517, Plate 20; (6) Part in., tV^/rf., pp. 662-724; (c)Part 

 v., Vol. xl., pp. 540-624, Plate 50; [d)\\., anfea, pp. 223-245, 250-283. 



2. Carxe, J. E. and Jones, L. J. — "The Limestone Deposits of New 



South Wales."' Mineral Resources, No.24. (In preparation). 



8. " The Copper Mining Industry of N. S. Wales." Mineral 



Resources, No. 6, pp. 3 13-6. 



4. Ethekid(4E, R., Jun. — "The Corals of the Tamworth District." 



Records Geol. Survey N. S. Wales, Vol. vi. 



5. BETKiEAT, A. — "Die Granodiorite von Concepcion del Oro luid sein 



Kontakt." Neues Jahr. fiir Miner. Beil., Bd.28, 1907, pp. 421-573. 

 Also (Spanish) Boletin del Instituto Geologico de Mexico, No.37. 

 See also revicM' of above, bj' F. Becke, " Fortschritte auf deni 

 Gebiete der Metamorphose." Fortschritte der Mineralogie u.s.w. 

 1911, pp. 221 -256. 



