209 



Near the old jetty, situated at a quarter of a mile to 

 the northward of Rocky Point, the beach is occupied with 

 a large area of bedded hydrous oxide of iron, which is a 

 development within the limits of the freshwater beds, and 

 for a time was worked for flux. 



An indurated sandstone, similar to that of Rocky Point, 

 occurs about three-quarters of a mile to the north of Muloo- 

 wurtie Point, near the northern fence of Section 49, where the 

 beds make a small point. Here the silicification of the beds 

 has taken a greater vertical range than at Rocky Point, but 

 the cliffs in which they occur are not so high. As at Rocky 

 Point the sandstone rests on the fossiliferous Miocene, which 

 at this place is highly glauconitic, as described before. The 

 freshwater sandstones end on the southern side of the small 

 point, just before entering on the little bay which is imme- 

 diately north of the "sliding rocks." 



The siliceous sandstones differ from the silicified Tertiary 

 beds of the neighbourhood in that while the latter are flinty 

 the freshwater consolidated beds are sandy with a siliceous 

 cement. 



Mr. Tepper records the occurrence of petrified wood and 

 the impression of a fossil leaf in a locality more northerly 

 than that mentioned in these notes. His use of the term 

 "grits" for three very distinct geological formations, and 

 of widely different ages, creates some uncertainty as to which 

 is intended in his descriptions. I take it, however, that the 

 following references are intended to apply to the alluvial 

 grits : — "The only place where distinct fossils were discovered 

 by me is about the south-west corner of Section 41 [on the 

 south side of the Maitland road, 4 miles from Ardrossan], 

 where they were preserved in mottled ferruginous coarse 

 sandstone, associated with nodules of iron oxide. ... A 

 single specimen of a leaf, resembling those of some Cinna- 

 momum species in veination, has been found impressed upon 

 a fragment of rock. . . . Specimens of silicified wood are 

 much more numerous. After finding some few fragments 

 along the beach and others among the gravels forming the 

 upper portion of the cliffs, I succeeded in finding a spot 

 where they strewed the ground in plenty, viz., on the road 

 crossing Horse Gully, between Sections 22 and 30. They are 

 embedded in the clays covering the Silurian limestones." — 

 (Geol. Hundred of Cunningham, Trans. Roy. Soc. S. Austr., 

 vol. iv., 1882, p. 66.) 



(b) THE NEWER SERIES. 



The sea cliffs at Ardrossan make a striking feature. They 

 have a maximum height of about 70 feet, and consist of 



