numbers are found in close proximity to the old sea-cliffs of 

 glacial till, in which similar granites to those on the beach 

 can be found in situ. 



Between Encounter Bay and the River Inman there are 

 low-lying flats of recent origin. They extend from the base 

 of the moraine to the sea, and are often more or less sub- 

 merged in winter by the drainage from the hills, when the 

 water accumulates behind the coastal sandhills. In these 

 flats there are deposits of white to dark-coloured marlstones, 

 consisting largely of the brackish-water shell, Oexiella 

 badgei'ensis. The deposit in its present indurated condition 

 is a marly limestone, and is used for building purposes as well 

 as for road-metal. These estuarine shells give evidence of per- 

 manent lagoons behind the sandhills within recent times, the 

 water being retained, no doubt, by the underlying impervious 

 glacial clay. The limestone is capped by a thin deposit of 

 travertine which has been laid down under drier conditions in 

 later times. That the glacial moraine once occupied the posi- 

 tion and now underlies these flats is rendered probable by 

 the occurrence of erratics within the area. One of these can 

 be seen a little north of the old cemetery, in the angle of 

 Section 81, close to the road: and a smaller one, a little 

 north of the one just referred to, on the Encounter Bay road. 

 Further evidences of the extension of the glacial beds east- 

 wards are supplied by the fact that clay is sometimes exposed 

 on the beach, and also by the presence of a large granite erratic 

 stranded almost opposite the mouth of the Inman River. 



King's Point Moraine. 



The sea-beach between Rosetta Head and King's Point 

 is extremely rocky. Dark-coloured schists occupy the beach 

 in sharp ridges and make cliffs from 30 ft. to 50 ft. in height. 

 On the top of the sea-cliffs there are morainic deposits which 

 are continuous from Rosetta Head to King's Point (plate iv.)_ 

 Here the moraine is about half a mile in width, being limited 

 by a ridge of old rocks parallel with the coast and forming 

 its background. This coastal strip is under cultivation, and 

 is dotted with erratics. For the first three-quarters of a 

 mile from the Bluff the erratics are not numerous, but at the 

 distance named a small bay is reached in which a large num- 

 ber of granite boulders is grouped on the beach and also 

 on the top of the adjacent cliffs. From this point the 

 erratics again become scarcer until near King's Point, when 

 they once more increase in numbers under the influence of 

 the new trail connected with the latter. 



King's Point is a headland situated one and a half miles 

 to the south-west of Rosetta Head (plate x.). West Island,. 



