a. 



^w 



III. 



th 



oSk 



t 



> 



t 



( 



1 



Ch. XXVIIL] 



EAKTHQUAKES IN NEW ZEALAND. 



85 



(not mncli inferior to Yorkshire in dimensions), is supposed 

 by Mr. Roberts to have been permanently upraised from 1 to 

 9 feet. There was no perceptible elevation on the coast 16 

 miles N. of Wellington, but from that point to Pencarrow 

 Head on the east side, at the entrance of Port Nicholson, 

 (see Map, fig. 101), the amount of upheaval went on increasing 

 somewhat gradually, till it reached a vertical height of 9 feet 



alono- the eastern flank of the Eemutaka Mountains. 



This 



rano-e terminates in Cook Strait, between Port Nicholson 

 and Palliser Bay, in a lofty coast rising rapidly to heights 

 about 4,000 feet above the sea. Here the vertical movement 

 ceased abruptly along the base of these hills, not affecting 

 the low country to the eastward, 6, fig. 102, called the Plain 

 of Wairarapa. The points of minimum and maximum eleva- 

 tion, from NW. to SE., in the district above alluded to, 

 are about 23 miles apart, which therefore expresses the 

 breadth of the upraised area. Mr. Roberts was employed 

 professionally, before and after January 23, in executing 

 several government works in the harbour of Port Nicholson 

 and on the coast, and had occasion to observe minutely the 

 changes in the level of the land, which took place at various 

 points, and especially in 

 the sea-cliff, called Muka- 

 Muka, 12 miles SE. of 



the 

 eastern flank of the Eemu- 



rm 



Fig. 102. 



Wellington, where 



Junction of argillite and tertiary strata at 



Muka-Muka cliff.* 



A. ArgiUite. 



B. Tertiary strata. 



c, d. Line of vertical 



fissure and fault. 



taka range, before de- 

 scribed, terminates south- 

 wards in Cook Strait. Here 

 a distinct line of fault, c, d, 

 fig. 102, was observed, the 

 rocks on one side A, being raised vertically 9 feet, while 

 the strata B, on the other side of the fissnre c, d, experienced 

 no movement. The uplifted mass A consists, according 

 to My. Walter Mantell, of argillite, having th6 ordinary 

 composition of clay state, but. not laminated. It presents 

 a cliff, several hundred feet high towards the straits, whereas 



'" * I give this section from the de- therefore be simply regarded as an ei- 

 scriptioa of my informants, and it must planatory diagram. 



-. \H 



-r .'^ 



