Bartrum. — W estport-Charleston High-level Terraces. 



255 



Art. XXXIII. — -The Geological History oj the W estport-Charleston High-level 



Terraces. 



By J. A. Bartrum, New Zealand Geological Survey. 



(By permission of the Director of the Geological Survey.) 



[Read before the Wellington Philosophical Society, 22nd October, 1913.] 



Introduction. 



The first physiographical feature in the neighbourhood of Westport to 

 arrest the attention of an observer is the abruptness with which the 

 mountains a few miles from the town rise from a comparatively low coastal 



C. Foxihvincl 



Tauranga Bay 



OTccuri AT" 

 Totarcu -ffi. 



Deep Ck 



Fou-rMUeR 



WavtcCkej 

 Constant Bay 



CHAR 



LOCALITY MAP 



OF 



ESTPORT-CHARLESTON 

 DISTRICT 



— Scale - 



CHS BO<0 O " 



3 MILES 



strip to heights ranging between 4,000 ft. and 5,000 ft. The next note- 

 worthy feature is the regularity and persistence of a prominent high-level 

 terrace nestling not far from the steep lower slopes of the mountains. The 

 general surface of this terrace is about 500 ft. above sea-level, or 250 ft. 



