760 GEOLOGY OF THE NORTH-WEST COAST OF TASMANIA, 



south of Wynyard. These beds after the eruption of basalt 

 were also extensively denuded, and the coast-line elevated to its 

 present position. But before these beds were laid down, the 

 glacial drift had been much wasted, and much of its material 

 redeposited as a loosely compacted conglomerate, which is seen 

 in places underlying and partly mixed up with the lower strata 

 of the Tertiary formation. 



Half a mile west of the mouth of the Inglis is Freestone Bluff 

 glacial (Plate xxvi., fig. 1), a partly isolated mass of rock basedon the 

 drift and the conglomerate derived from it. Its height may be 

 roughly estimated at about 150 feet, the greater part consisting 

 of bedded sandstone containing fossil shells and corals, and 

 dippiug at a low angle to the west of north. This is capped by 

 basalt, which evidently was at one time continuous with the 

 great sheet abutting against the Cape. The upper portion of the 

 sandstone shows numerous small shells of a species of Turritella t 

 with some leaves of trees not now existing in Tasmania, and was 

 probably a wind-blown dune. Lower down are fossil shells in 

 great variety, the larger and heavier species, such as Crassalella, 

 a large Pectunculus, and the larger species of Voluta, increasing 

 in number towards the base. Some of the shells closely resemble 

 existing species, but the majority are of a quite distinct type. 

 Among the latter were obtained during a somewhat hurried 

 visit a specimen of Trigonia semiundulata, and a large but not 

 quite perfect Cyprcea eximia which is identical with that figured 

 in Strzelecki's " New South Wales and Van Diemen's Land." 

 Other smaller species intermediate between C. eximia and the 

 existing C. umbilicata were also noticed. This Tertiary formation 

 passing from tine-grained sandstone into coarser beds with small 

 water-worn gravel continues westward to Table Cape, and is 

 capped by basalt except where the latter has been denuded off 

 it. The volcanic rock forming the conspicuous headland of the 

 Cape, 583 feet in height, diners in many respects from the basalt 

 adjoining it, as may be seen from a comparison of the pebbles of 

 the two rocks which line the beach of Freestone Cove. Their 

 junction is inaccessible from the east at sea-level, and access 



