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Transactions. 



— perhaps contemporaneously with the gentle tilting of the western coastal 

 platforms. In the last case, as in the first, there must be a transitional 

 area between the permanently uplifted and the resubmerged areas. The 

 uplifted platforms give no information as to the nature of the warping 

 in the transitional strip, for three-quarters of a mile eastward of Tongue 

 Point they end, their former continuation having been cut away by modern 

 cliff -re treat. 



Platforms of the Eastern Side tilted towards the Depression. — To the 

 eastward, though not actually bordering Port Nicholson itself, coastal 

 platforms make their appearance not far from it, and these are strongly 

 tilted. 



As on the western side, there is only one bench that can be traced for 

 a considerable distance with certainty ; and there is a temptation to 

 correlate it with the 230 ft. platform at Tongue Point, but such correlation 

 is by no means certain. The ancient shore-line at t\ie rear of this bench, 

 which may be termed the " Baring Head platform," as it is developed 

 around Baring Head (Plate XXIX, fig. 2), rises from 100 ft. in Fitzroy 

 Bay (fig. 2) to 450 ft. at the mouth of the Orongorongo Riv r er (Plate XXX, 

 fig. 1). Its continuation in both directions beyond these points has been 



Fig. 2. — Diagram-sketch of the southern end of the tilted area east of Port Nicholson. 

 From left (north-west) to right (south-east) the coastal features shown 

 are : Pencarrow Head, Lake Koangapiripiri, Lake Koangatera, Fitzroy Bay, 

 Baring Head, Wainui-o-mata River, Orongorongo River, Cape Turakirae. 



destroyed by cliff-recession, but between them it is quite continuous except 

 for the narrow, steep-sided valley through which the Wainui-o-mata River 

 flows out. The distance in a direct line between the two ends of this 

 platform remnant is two miles, and along this line a tilt of 175 ft. per mile 

 is therefore indicated. This is, of course, verv distinctly visible to the eye 

 (fig. 2. and Plate XXX, figs. 1 and 2; see 'also Cotton, 1916a, fig. 19), 

 though, as the bench follows the trend of the coast around Baring Head, 

 the whole of it cannot be seen at once except from some distance out 

 at sea. 



The Baring Head platform is very slightly dissected. It retains its 

 discontinuous covering (in places 30 ft. deep at the present cliff-edge) of 

 gravel and coarse sand, both derived from the local greywacke, the sand 

 being now almost completely weathered into sandy clay Through this 

 veneer the solid rock projects in places, some of the projections rising 

 20 ft. above the ground-level as stacks, which are now crumbling to 



