259 



NOTE ON A GLACIALLY-STRIATED PAVEMENT IN THE KUTTUNG 

 SERIES OF THE MAITLAND DISTRICT. 



By G. D. Osborne, B.Sc, anh W. R. Browne, B.Sc. 



(Plate sxii., and one Text-figure.). 



Our knowledge of glaciation of definitely Carboniferous age in New South 

 Wales dates back to the visit of the British Association for the Advancement 

 of Science to this State in 1914, when, during one of the geological excursions, 

 Professor David made the discovery of definite tillite at Seaham, in the Mait- 

 land District, an identification which was concurred in by Professors Penck 

 and Coleman. Following on this discovery, field work, chiefly by Mr. C. A. 

 Sussmilch and also by Professor David and others, resulted in the identification 

 of further evidences of Carboniferous glaciation in the shape of tillites, fluvio- 

 glacial conglomerates containing faceted and striated pebbles and seasonally- 

 banded glacial shales — varve rock — on various horizons, sometimes exhibiting 

 contemporaneous contortion. The results of these researches are embodied in 

 an important paper by Mr. Sassmilch and Professor David (Journ. Proc. Roy. 

 Soc. N.S. Wales, liii., 1919, pp. 246—338). 



Glacial conglomerates and varves have now been i-ecognised in many locali- 

 ties in the Southern Carboniferous areas as well as further north at C^urra- 

 bubula, near Tamworth (These Proceedings, xlv., 1920, p. 286), but apart from 

 the occurrence of the Seaham tillite and the indication by the existence of 

 varves of the proximity of land ice to the site of their deposition, no definite 

 evidence of the presence of such land ice at any particular spot in the Hunter 

 Valley had been obtained until the recent discovery of tlie striated pavement 

 which forms the subject of this note. 



One of the authors (W.R.B.) is at present engaged in the investigation of 

 the Carboniferous rocks occurring princijially in the parishes of Wolflngham 

 and Gosforth, near West Maitland, and it was during a short visit by both 

 authors to these districts in February last, that the pavement was found, the 

 actual discovery being due to Osborne. 



The pavement is situated in portion 10, Parish of Wolflngham, near the 

 eastern boundary of the parish. A surveyed road, leading from the neighlxiar 

 hood of Gosforth to Paterson Township, after ascending a spur of the scarp 

 bounding the ]ilateau, forms the boundaries between portions 10 and 13. At the 



